(Closed Book Aid) Flashcards by London Cabada

What is the most frequent used wire size for interior wiring?
(A)10 awg
(B)12 awg
(C)14 awg
(D)18 awg

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Electric power is almost exclusively generated, transmitted and distributed by three-phase systems because it ?.
(A)Costs Less than single-phase apparatus
(B)is more efficient
(C)uses less material for a given capacity
(D)all of these

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An automatic device that operates at preset values is known as a ?.
(A)Fuse
(B)relay
(C)Contactor
(D)Mercury switch

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Electron is a Greek word for ?.
(A)Heat
(B)Feather
(C)Stone
(D)Amber

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What kind of instrument is an ammeter?
(A)A recording
(B)A DC meter
(C)An indicating
(D)An integrating

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The purpose of battery cells connected in parallel is to ?.
(A)Increase internal resistance
(B)increase in voltage output
(C)increase in current capacity
(D)decrease in current capacity

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The ? value is considered as the most important value of a sine wave.
(A)peak
(B)instantaneous
(C)effective
(D)average

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When two resistances are connected in series, ?.
(A)voltage across them must be the same
(B)current in each resistor will be the same
(C)there will be no current in the circuit
(D)they will become inductive

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A step-down transformer ?.
(A)increases both the voltage and current
(B)lowers the current and increases the voltage
(C)lowers the voltage and increases the current
(D)lower both the voltage and current

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Heat is a form of wasted electrical energy dissipated by ?.
(A)inductance
(B)capacitance
(C)a diode
(D)resistance

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When one resistance in a series circuit is open ?.
(A)the voltage is zero across the open resistance
(B)the current is zero in all the resistances
(C)the current is maximum in the normal resistances
(D)the current increases in the voltage source

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A wire has a resistance of 5 ohms. what will the resistance of another wire of the same material three times as long and half the cross sectional area?
(A)7.5
(B)15
(C)30
(D)50

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if the needle of the VOM will no longer align with the zero-ohm mark at the lowest range of resistance but will align on the other resistance ranges, the probable cause is the ?.
(A)meter current is abnormal
(B)needle is bent
(C)terminals were interchanged
(D)supply battery is weak

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A wattmeter measures ?.
(A)AC power only
(B)DC reactive power only
(C)AC and DC power
(D)None of these

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A large series motor should not be started without some mechanical load on it because it will ?.
(A)Open the fuse or CB
(B)Draw too much current
(C)spark Heavily
(D)develop excessive speed and damage itself

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Which of the following can vary with AC but not with DC?
(A)Voltage
(B)Frequency
(C)Power
(D)magnitude

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an inductor works by?.
(A)introducing resistance into a circuit
(B)charging a piece of wire
(C)storing energy as a magnetic field
(D)choking off high frequency AC

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A cell that can not be recharged is a ?.
(A)Dry cell
(B)Wet Cell
(C)Secondary Cell
(D)Primary Cell

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A measuring instrument used to measure the diameter of circular mils in a wire is a ?.
(A)wire gauge
(B)micrometer
(C)millimeter
(D)milliammeter

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The start winding of a split-phase induction motor is switched out of the circuit by a device called ?.
(A)Proximity switch
(B)zero speed switch
(C)magnetic contactor
(D)centrifugal switch

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An ideal step-up transformer with 100 turns in the primary and 2500 turns in the secondary carries a load of 2 amps in the secondary windings. the current of the primary winding is ?.
(A)25
(B)50
(C)250
(D)500

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A device used to remove sharp burrs or rough edges is a ?.
(A)hickey
(B)bender
(C)reamer
(D)rotometer

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The presence of current is only made known by the effect it produces. three important effects are ?.
(A)heating, magnetic, and chemical
(B)generation, chemical and electric shock
(C)heating, magnetic and electric shock
(D)heating, electric shock and generation

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?. is a wiring method using knobs, tubes, and flexible non-metallic tubing for the protection and support of single insulated conductors concealed in hollow spaces of walls and ceilings of buildings
(A)Knob and tube wiring
(B)open wiring on insulators
(C)open wiring with knobs, tubes, etc.
(D)Concealed knob and tube wiring

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``` A ? is not a standard size fuse. (A)45 (B)75 (C)80 (D)125 ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` ? currents are wasteful currents which flow in the core of the transformer and produce heat. (A)sneak (B)magnetizing (C)Eddy (D)residual ```

``` In electricity, the positive electric charge refers to ?. (A)atoms (B)electrons (C)neutrons (D)protons ```

``` The rate of doing work is ?. (A)power (B)current (C)energy (D)force ```

``` A transformer consists of ?. (A)a parallel resonant circuit (B)two coils wound on a common core (C)a capacitor and an inductor (D)an inductance and resistance ```

``` The effect of a discharge of electricity due to ionization of surrounding air by high voltage is (A)corona effect (B)hall effect (C)Compton effect (D)miller effect ```

An ammeter must always be connected in the circuit under test ?. (A)positive to negative and negative to positive (B)positive to positive and negative to positive (C)positive to negative and negative to positive (D)positive to positive and negative to negative

``` ? is the poorest conductor of electricity (A)Steel (B)Aluminum (C)Silver (D)Carbon ```

``` A meter used to test the armatures and stators of electric motors, generators, and other equipment for a short circuit is called a ?. (A)multimeter (B)megohmeter (C)bolometer (D)growler ```

``` In a transformer, the primary circuit sees the impedance of the ? wiring. (A)secondary (B)primary (C)both primary and secondary (D)isolation ```

``` When the temperature of a conductor is decreased the resistance will be ?. (A)increases (B)steady (C)decreased (D)zero ```

``` ? is the process by which one conductor produces or induces a voltage in another conductor even though there is no mechanical coupling between the two conductors (A)cutting of fluxes (B)short circuit (C)induction (D)Eddy current ```

``` A/an motor has no commutator (A)shunt (B)induction (C)universal (D)repulsion ```

The inert gas present in an incandescent bulb is primarily intended to ?. (A)increase lumen output (B)decrease filament evaporation (C)activate the surface of the filament (D)reduce hazards when the glass bulb is shattered

``` A short circuit can be detected by using (A)a megger (B)an ammeter (C)an oscilloscope (D)an ohmmeter ```

``` Which of the following has the least number of valance electrons? (A)insulator (B)semi-insulator (C)conductor (D)semiconductor ```

``` To increase voltage output, battery cells are connected in ?. (A)series (B)parallel (C)series-parallel (D)parallel-series ```

If a low resistance is connected in parallel with a higher resistance, the combined resistance is ?. (A)always less than the low resistance (B)always more than the high resistance (C)always between the values of high and low resistance (D)higher of lower than the low resistance depending on the value of the higher resistance

The purpose of a ballast in a fluorescent lamp assembly is ?. (A)to regulate the lumens output (B)to limit the current through the lamp (C)to improve the overall power factor (D)to regulate the voltage across the lamp

``` Branch circuits are classified according to the maximum ?. (A)power consumed (B)voltage across it (C)load being served (D)setting of the overcurrent device ```

``` A capacitor opposes change in ?. (A)current (B)voltage (C)voltage and current (D)neither voltage nor current ```

``` On a simple ohmmeter, the 0ohm mark is located ?. (A)in the middle (B)at the far left (C)at the far right (D)anywhere ```

Which of the following is the main function of a DC motor? (A)To change mechanical energy to electrical energy (B)to change electrical energy to mechanical energy (C)to change chemical energy to mechanical energy (D)to generate power

``` A short length of conductor used to make a connection between terminals or around a break in the circuit is a ?. (A)jumper (B)bonding wire (C)tie wire (D)guy wire ```

``` A fuse link should be made from a material with a ? melting point. (A)high (B)low (C)moderate (D)strong ```

``` Your foreman asked you to measure the insulation resistance of some conductors. To do this you would use a ?. (A)hydrometer (B)megger (C)bell tester (D)wattmeter ```

``` The main difference between a pipe thread and a machine thread is that the pipe thread is ?. (A)finer (B)longer (C)uneven (D)tapered ```

``` Receptacles in residential wiring are regularly connected in ?. (A)parallel (B)perpendicular (C)series (D)diagonal ```

A foreman in charge of a crew of men preparing to work on a low voltage tension circuit should caution them to ?. (A)work only when the load is zero (B)consider the circuit hot at all times (C)never work on any circuit alone (D)wait until the circuit has been killed

``` The term pneumatic refers to ?. (A)Electricity (B)Steam (C)Air (D)oil ```

``` what type of fastner would you use to mount a box to a hollow tile wall? (A)expansion bolts (B)toggle bolts (C)rawl plugs (D)bolts with backing plates ```

``` Which of the following locations would most likely require installation of a ground fault circuit interrupter? (A)Living room (B)closet (C)bedroom (D)bathroom ```

``` The lubricant used to make pulling wires through a conduit easier is ?. (A)grease (B)powdered pumice (C)vaseline (D)powdered soapstone ```

``` The instrument by which electric power is measure is a ?. (A)ammeter (B)rectifier (C)voltmeter (D)wattmeter ```

``` The connection between the grounded circuit conductor and the equipment grounding conductor at the service is called the ? bonding jumper (A)circuit (B)eequipment (C)main (D)appliance ```

``` The larger the conductor, the ?. (A)higher the resistance (B)lower the ampacity (C)higher the voltage (D)lower the resistance ```

A hook on the end of a fish tape is not to ?. (A)keep it from catching on jointsd and bends (B)tie a swab to (C)tie the wires, top be pulled (D)protect the end of the wire

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

When soldering two copper conductors together, they are kept clean while heating by ?. (A)the use of flux (B)applying the solder quickly (C)rubbing often with emery cloth (D)not permitting the open flame to touch them

Metal Cabinets used for lighting circuits are grounded to ?. (A)reduce shock hazard (B)eliminate electrolysis (C)Assure that the fuse will blow in a defective circuit (D)simplify the wiring

``` In sockets, extension cord is protected by the means of the ? knot. (A)underwriters (B)clove hitch (C)sheepshank (D)western union ```

``` A branch circuit that supplies a number of outlets for lighting and appliances is a/an ? branch circuit. (A)individual (B)multi-purpose (C)general purpose (D)utility ```

``` When three equal resistors are connected in parallel, the total resistance is ?. (A)equal to the resistance of each (B)less than any one resistor (C)greater then any one resistance (D)none of these ```

The efficiency of a motor is a measure of ?. (A)the natural speed of the motor (B)the torque the motor produces (C)how well it converts electrical energy into mechanical energy (D)the power output of the motor in horsepower

When stripping insulation from an aluminum conductor ?. I. Remove the insulation as you would sharpen a pencil II. ring the conductor and slip the insulation off the conductor III. peel the insulation back and the cut outwards. (A)I, II, and III (B)I and II (C)I and III (D)II and III

``` The ? angle is the angle between the real power and the apparent power. (A)lag (B)power factor (C)voltage-current (D)watt ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` 60 cycle frequency travels 180 degrees in how many seconds. (A)1/60 (B)1/120 (C)1/180 (D)1/30 ```

``` The current-carrying capacity of conductors expressed in amperes is ?. (A)demand (B)pressure (C)ampacity (D)duty-cycle ```

The electricians tapered reamer is used for ?. (A)reaming the threads on couplings (B)reaming the holes in bushings (C)reaming the ends of rigid conduit after it is cut (D)making holes in boxes

``` Electricity is sold by the kilowatt which is ? watts. (A)10,000 (B)1,000 (C)100 (D)100,000 ```

``` Three-way switching does not use the following conductor: (A)ungrounded (B)traveler (C)grounded (D)switch leg ```

``` The greater the number of free electrons, the better the ? of the metal (A)insulation value (B)resistance (C)voltage drop (D)conductivity ```

To cut Wiremold you would ?. (A)use a chisel (B)use an approved cutter like an M.M. cutter (C)Use pair of tin snips (D)use a hacksaw and remove the burr with a file

``` Electrical contacts are opened or closed when the electrical current energizes the coils of a device called a ?. (A)Thermostat (B)Reactor (C)condenser (D)Relay ```

A clamp-on ammeter will measure ?. (A)voltage when clamped on a single conductor (B)current when clamped on a multiconductor cable (C)accurately only when a parallel to cable (D)accurately when clamped perpendicular to a conductor

``` When a current leaves its intended path and returns to the source by bypassing the load the circuit ?. (A)open (B)shorted (C)incomplete (D)broken ```

``` The electric pressure or electromotive force is measure by the ?. (A)volt (B)electric meter (C)watt (D)kilowatt ```

``` Conduit installed in a concrete slab is considered a ?. (A)damp location (B)moist location (C)wet location (D)dry location ```

``` It is best as a safety measure, not use water to extinguish electrical equipment fires. The main reason is that water ?. (A)may transmit shock to the user (B)will turn to steam (C)will not put the fire out (D)may damage the wiring ```

``` The total opposition to current flow in an AC circuit is expressed in OHMS and is called ?. (A)impedance (B)conductance (C)reluctance (D)resistance ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` When a person is burned the basic care steps are ?. (A)cover and cool the burned area (B)prevent infection (C)care for shock (D)all of these ```

``` A multimeter is a combination of ?. (A)ammeter, ohmmeter, and wattmeter (B)voltmeter, ohmmeter, and ammeter (C)voltmeter, ammeter and megger (D)voltmeter, wattmeter and ammeter ```

``` A good magnetic material is ?. (A)brass (B)copper (C)iron (D)aluminum ```

``` Since fuses are rated by an amperage and voltage a fuse will work on ?. (A)AC only (B)AC and DC (C)DC only (D)Any voltage ```

``` A fuse puller is used in replacing ?. (A)Cartridge fuses (B)plug fuses (C)link fuses (D)ribbon fuses ```

``` A pendant fixture is a ?. (A)hanging fixture (B)recessed fixture (C)bracket fixture (D)none of these ```

``` To fasten an outlet box between the studs in a wall constructed of metal lath and plaster, you would use ?. (A)Cement or mortar (B)iron wire (C)nylon lath twine (D)an approved box hanger ```

``` The unit of measurement for electrical resistance to current is the ?. (A)watt (B)ohm (C)volt (D)amp ```

``` A low energy power circuit ?. (A)is a remote-control circuit (B)is a signal circuit (C)has its power supplied by transformers and batteries (D)none of these ```

``` To convert AC or DC you will use a ?. (A)generator (B)rectifier (C)vibrator (D)auto-transformer ```

B or D

``` S(Lower left 3) is a symbol used on a drawing to indicate a ? switch. (A)flush (B)single-pole (C)four-way (D)three-way ```

``` Action requiring personal intervention for its control: (A)controller (B)automatic (C)periodic duty (D)non-automatic ```

``` A voltmeter is connected in ?. with the load. (A)series (B)parallel (C)series-parallel (D)series-shunt ```

To control a ceiling light from five different locations it requires which of the following? (A)four 3-way switches and one 4-way switch (B)three 4-way switched and two 3-way switches (C)three 3-way switched and 2 4-way switches (D)four 4-way switched and one 3-way switch

``` The advantage of AC over DC includes which of the following? (A)better speed control (B)lower resistance at higher current (C)ease of voltage variation (D)impedance is greater ```

``` which of the following is considered the best electrical conductor? (A)iron wire (B)copper wire (C)aluminum wire (D)tin wire ```

``` the liquid in a battery is called the ?. (A)askeral (B)festoon (C)hermatic (D)electrolyte ```

``` A color code is used in multiple-conductor cables. for a 3-conductor cable the colors would be ?. (A)one black, one red and one white (B)two black and one red (C)one white, one black and one blue (D)two red nd one black ```

``` explanatory material in the code is characterized by ?. (A)Informational Note (B) (C) (D) ```

Informational Note

``` A ? box may be weather proof. (A)watertight (B)rainproof (C)raintight (D)all of these ```

The Code requires that all AC phase conductors where used, the neutral and all equipment grounding conductors be grouped together when using metal enclosures or raceways. The principal reason for this is ?. (A)currents would circulate though individual raceways (B)less expensive to install a single raceway (C)lass labor hours for pulling wires in a single raceway (D)conductors are easier to pull in a single raceway

``` Installing more than three current carrying conductors in the same conduit requires ?. (A)a larger conduit (B)high heat rated conductors (C)derating of ampacity (D)continuous loading ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` The ? circuit is that portion of a wiring system prior to the final overcurrent protective device protecting the circuit. (A)service (B)feeder (C)power (D)branch ```

When tightening a screw on a terminal, the end of the conductor should wrap around the screw in the same direction that you are turning the screw to that ?. (A)when you pull in the conductor it will tighten (B)the screw will not become loose (C)the conductor will act as a locking nut (D)the conductor will not turn off

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` A ? is used for testing specific gravity. (A)thermocouple (B)megger (C)hydrometer (D)galvanometer ```

An autotransformer differs from other types of transformations in that ?. (A)its primary winding isd always larger than its secondary winding (B)it can be used only in automobiles (C)its primary and secondary windings are common to each other (D)it must be would with heavier wire

``` In residential buildings, small appliance loads should have two or more ?/ (A)15 ampere branch circuits (B)20 ampere branch circuits (C)40 ampere branch circuits (D)50 ampere branch circuits ```

``` If the end of a cartridge fuse becomes warmer than normal, you should ?. (A)tighten the fuse clips (B)lower the voltage on the circuit (C)notify the utility company (D)change the fuse ```

``` Which of the following is the poorest conductor of electricity? (A)mercury (B)aluminum (C)carbon (D)silver ```

``` The primary winding of a loaded step-down transformer has ? compared to the secondary winding. (A)lower voltage and current (B)higher voltage and current (C)higher voltage and lower current (D)lower voltage and higher current ```

Copper is used for the tip of a soldering iron because (A)copper will not melt (B)copper is a very good conductor of heat (C)solder will not stick to other alloys (D)copper is less expensice

``` The sum of the voltage drop around a circuit is equal to the source voltage is ?. (A)Kirchoff's Law (B)Ohms Law (C)Nevins Theory (D)Faradays law ```

``` Piezoelectric is caused by crystals or binding ?. (A)Chemical (B)Battery (C)Pressure (D)Heat ```

Heavy-duty lampholder include ?. (A)admedium lampholders rated at 660 watts (B)lampholders used on circuits larger than 20 amperes (C)lampholders rated at not less than 750 watts (D)All of the above

The reason for installing electrical conductors in a conduit is ?. (A)to provide a ground (B)to increase the ampacity of the conductors (C)to protect the conductors from damage (D)to avoid derating for continuous loading of conductors

``` Discoloring of one end of a fuse normally indicates ?. (A)increased current (B)excessive voltage (C)low resistance (D)poor contact ```

``` Wing nuts are useful on equipment where ?. (A)cotter pins are used (B)the nuts must be removed frequently (C)a wrench cannot be used (D)screws cannot be used ```

When resistors are connected in series, the total resistance is ?. (A)The sum of the individual resistance values (B)the equivalent of the smallest resistance value (C)the equivalent of the largest resistance value (D)less then the value of the smallest resistance

``` If a 120 volt incandescent light bulb is operating at a voltage of 125 volts the result will be ?. (A)it may be enough to blow a fuse (B)the bulb won't be as bright (C)shorter life of the bulb (D)the wattage will be less than rated ```

``` laminations are used in the transformers to prevent ?. (A)copper loss (B)weight (C)eddy current loss (D)counter EMF ```

``` The Code requires which of the following colors for the equipment grounding conductor? (A)white or gray (B)green or green with yellow stripes (C)yellow (D)blue with a yellow stripe ```

``` Sometimes mercury toggle switches are used in place of regular toggle switch because they ?. (A)are easier to connect (B)do not wear out quickly (C)are less expensive (D)they glow in the dark ```

``` The assigned color for the high-leg conductor of three-phase, 4 wire-delta secondary is ?. (A)red (B)black (C)blue (D)orange ```

The Code rule for the maximum 90 degree bends in a conduit between two boxes is four, the most likely reason for the total 360 degree limitation is ?. (A)it is unsafe (B)it makes pulling the conductors through the conduit too difficult (C)you can damage the galvanized coating on the conduit (D)too many bends require extra wire to be pulled

``` The correct word to define wiring which is not concealed is ?. (A)open (B)uncovered (C)exposed (D)bare ```

``` A solenoid is a ?. (A)relay (B)permanent magnet (C)dynamo (D)Electromagnet ```

``` An electrician should always consider the circuit to be "'hot" unless he definitely knows otherwise. The main reason is to avoid ?. (A)personal injury (B)having to find the panel (C)saving time (D)shutting off the wrong circuit ```

``` The Best thing to cut PVC conduit within a tight area is ?. (A)a short hacksaw (B)a nylon string (C)a knife (D)a pipe cutter ```

Ohm's law is ?. (A)an equation for determining power (B)the relationship between voltage, current, and power (C)the relationship between voltage, current, and resistance (D)a measurement of wattage losses

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` What is the normal taper of a standard conduit thread-cutting die? (A)1/2" per foot (B)1/4" per foot (C)3/8" per foot (D)3/4" per foot ```

``` In an AC circuit the ratio of the power in watts to the total volt-amps is called the ?. (A)demand factor (B)power factor (C)turns-ratio (D)diversity factor ```

``` A continuous load is where the maximum current is expected to continue for ? hours or more. (A)five (B)two (C)three (D)four ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

A ladder which is painted is a safety hazard mainly because the paint ?. (A)may conceal weak spots in the rails or rungs (B)is slippery after drying (C)causes the wood to crack more quickly (D)peels and the sharp edges of the paint may but the hands

``` The chemical used as the agent in fire extinguishers to fight electrical fires is ?. (A)CO2 (B)K0H (C)H2O (D)L06 ```

``` A location classified as ? my be temporarily subject to dampness and wetness. (A)dry (B)damp (C)moist (D)wet ```

``` The average dry cell battery gives an approximate voltage of ?. (A)1.5 (B)1.2 (C)1.7 (D)2.0 ```

``` The ? circuit is that portion of a wiring system beyond the final overcurrent protection. (A)lighting (B)feeder (C)signal (D)branch ```

``` Which of the following will not affect the resistance of the circuit? (A)Length of the conductor (B)Diameter of the conductor (C)Insulation of the conductor (D)Temperature ```

``` The electromotive force required to cause a current to flow may be obtained ?. I. Thermally II. Mechanically III chemically (A)I only (B)I and III only (C)II and III only (D)I, II, and III ```

Which of the following is not True? (A)A fluorescent fixture is more efficient than an incandescent fixture (B)Room temperature has an affect on the operation of a fluorescent lamp (C)Fluorescent fixtures have a good power factor with the current leading the voltage (D)The life of a fluorescent bulb is affected by starting and stopping.

``` Resistance opposes the flow of the current in a circuit and is measured in ?. (A)farads (B)joules (C)ohms (D)henrys ```

Which of the following is true? (A)wooden plugs may be used for mounting electrical equipment in concrete (B)The high-leg conductor of a 4-wire delta is identified blue in color (C)The minimum size service permitted by the Code for a residence is 100 amps (D)The ungrounded conductor is connected to the screw shell of a lampholder

``` Multiple start buttons in a motor control circuit are connected in ?. (A)series (B)parallel (C)series-parallel (D)none if these ```

Which of the following is not true? (A)Feeder demand factors are applicable to household electric ranges (B)A green colored conductor can be used as an ungrounded circuit conductor (C)insulated conductors #6 or smaller shall be white or gray, no marking tape permitted (D)all joints or splices must be electrically and mechanically secure before soldering

Special permission is ?. (A)granted by the electrical foreman on the job (B)verbal permission by the inspector (C)given only once on one blueprint change request (D)the written consent of the authority having jurisdiction

``` One million volts can also be expressed as ?. (A)1 millivolt (B)1 kilovolt (C)1 megavolt (D)1 microvolt ```

``` Resistance in a circuit may be ?. I Resistance of the conductors II resistance due to imperfect contact (A)I only (B)II only (C)both I and II (D)Neither I nor II ```

Which of the following is not true? (A)All Receptacles on the 15 and 20 amp branch circuits must be of the grounding type (B)Splices and joints shall be covered with an insulation equivalent to the conductor insulation (C)The size of the conductor determines the rating of the circuit (D)All 15 and 20 amps receptacles installed in a dwelling bathroom shall have GFCI protection

A magnetic field is created around a conductor ?. (A)whenever current flows in the wire, provided the wire is made of magnetic material (B)only when the wire carried a large current (C)whenever current flows in the conductor (D)only if the conductor is formed into a loop

``` A universal motor has brushes that ride on the ?. (A)commutator (B)stator (C)inter-pole (D)field ```

``` How many kw Hours are consumed by 25-60 watt light bulbs burning 5 hours in a 120V circuit. (A)1.5 (B)180 (C)7.5 (D)75 ```

A dynamo is ?. (A)a pole line insulator (B)a tool used to test dielectric strength (C)a meter used for checking the RPM of a motor (D)a machine for converting mechanical energy into electrical energy

``` Which of the following is/are generally used for field magnets? I. Copper II. Steel III. Wrought iron (A)I and II only (B)I and III only (C)II and III only (D)I, II, and III ```

The difference between a neutral and a grounded circuit conductor is ?. (A)only a neutral will have equal potential to the ungrounded conductor (B)only a neutrals outer covering is white or natural gray (C)only a neutral carries unbalanced current (D)there is no difference

``` The normal rotation of an induction motor is ? facing the front of the motor. (The front of a motor is the end opposite the shaft) (A)Clockwise (B)Counterclockwise (C) (D) ```

``` A function of relay is to ?. (A)turn on another circuit (B)produce thermal electricity (C)limit the flow of electrons (D)create a resistance in the field ```

Which of the following is not true? (A)It is an electrical impossibility to have a circuit with only inductive reactance because the metallic wire has a resistance (B)The voltage of a circuit is the greatest effective difference of potential that exists between any two conductors of a circuit (C)The current is said to lag the voltage in a circuit that has only capacitive reactance (D)Power factor is the phase displacement of current and voltage in an AC circuit

``` Unity power factor, which means that the current is in phase with the voltage, would be ?. (A).50 (B).80 (C)0.10 (D)1.0 ```

``` Rheostats and potentiometers are types of ? resistors. (A)Film (B)Variable (C)Fixed (D)wirewound ```

``` A laminated pole is ?. (A)one built up of layers or iron sheets, stamped from sheet metal and insulated (B)used in transmission lines over 100kv (C)a pole soaked in creosote (D)found in the western part of the USA ```

Which of the following is true? (A)Conductors of different systems may not occupy the same enclosure (B)Knife switched should be mounted in a horizontal position (C)75 amps is a standard size fuse (D)Circuits are grounded to limit excess voltage to ground, which might occur from lightning or exposure to other higher voltage sources

``` Electrical power is a measure of ?. (A)work wasted (B)Voltage (C)Rate at which work is performed (D)total work performed ```

``` What percentage of the maximum (peak) voltage is the effective (RMS) voltage? (A)100 (B)70.7 (C)53.7 (D)57.7 ```

``` A low factor is commonly caused by ?. I. induction motors II. synchronous motors III. fluorescent lights (A)III only (B)II and III only (C)I and III only (D)I, II, and III ```

Which of the following is not true? (A)Conduit painted with enamel cannot be used outdoors (B)All AC phase wires, neutral and equipment grounding conductors if used, must be installed in the same raceway (C)PVC shall have a minimum burial depth of 24" (D)EMT raceway can be installed in an air conditioning-space heating duct

Which of the following is not true? (A)Equal currents flow in the branches of parallel circuits (B)The total resistance of a parallel circuit is less than the smallest resistor in the circuit (C)the total current in a parallel circuit is the sum of the branch currents (D)In a parallel circuit, there is more than one path for current flow

Hysteresis is ?. (A)the tool used to read the specific gravity of a battery (B)the lagging of magnetism,, in a magnetic metal, behind the magnetizing flux which produces it (C)the opposite of impedance (D)none of these

``` The electric pressure of a circuit would be the ?. (A)voltage (B)amperage (C)resistance (D)wattage ```

``` Permeability is ?. (A)the opposite of conductance (B)a measure of the ease with which magnetism passes through any substance (C)the total resistance to current flow (D)the liquid substance in a battery ```

``` The wheatstone bridge method is used for accurate measurements of ? (A)voltage (B)amperage (C)resistance (D)wattage ```

When a circuit breaker is in the OPEN position ?. I. You have a short in the ungrounded conductor II. You have a short in the grounded conductor (A)I only (B)II only (C)either I and II (D)Both I and II

``` In solving series-parallel circuits, generally you would ?. (A)treat it as a series circuit (B)reduce it to its simplest form (C)assume that all loads are equal (D)treat it as a parallel circuit ```

``` A commutator is ?. (A)a ditching machine (B)the inter-poles of a generator (C)a device for causing the alternating currents generated in the armature to flow in the same direction in the external circuit (D)a transformer with a common conductor ```

Which of the following is true? (A)EMT may be threaded (B)the "white" colored conductor connected to the silver colored post on a duplex receptacle on a 120V two-wire branch circuit is called the "neutral" conductor (C)plastic water pipe is approved to be used for electrical conduit (D)The screw shell of a lampholder may support a fixture weighing 6 pounds

``` To fasten a box to a terra cotta wall you should use of the following? (A)wooden plug (B)lag bolt (C)expansion bolt (D)toggle bolt ```

``` If a 240 volt heater is used on 120 volts, the amount of heat produced will be ?. (A)twice as great (B)four times as great (C)1/4 as much (D)the same ```

``` Which of the following about a strap wrench is/are true? I. You can turn pipe using one hand II. use in a tight corner III. use on different sizes of a pipe (A)I only (B)II only (C)III only (D)I, II and III ```

``` When soldering a joint, the flux is used to ?. (A)keep the wire cool (B)keep the surface clean (C)lubricate the joint (D)maintain a tight connection ```

``` The transferring of electrons from on material to another would be ? . (A)electrochemistry (B)static electricity (C)solar electricity (D)piezoelectricity ```

``` A minimum thickness of ? inch/inches of concrete over conduits and raceways should be used to prevent cracking. (A)1 (B)2 (C)3 (D)4 ```

``` Wire connectors are generally classified as ? type(s). I. thermal II. pressure (A)I only (B)II only (C)both I and II (D)neither I not II ```

One of the disadvantages of indenter or crimp connectors is ? (A)they must be re-crimped at each annual maintenance inspection (B)that special tools are required to make the joint (C)eventually they will loosen (D)they can only be used for copper conductors

The usual service conditions under which a transformer should be able to carry its rated load are ?. I. at rated secondary voltage or not in excess of 105% of the rated value II. at rated frequency III. temperature of the surrounding cooling air at no time exceeding 40C (104F) and average temperature of the surrounding cooling air during any 24-hour period not exceeding 30C (86F) (A)I only (B)II only (C)III only (D)I, II, and III

Which of the following is not true? (A)An autotransformer may be used as part of the ballast for lighting circuits (B)A branch circuit can never be supplied though an autotransformer (C)the losses of the autotransformer are less than those of a two-coil transformer (D)Autotransformers may be used as starting compensators for AC motors

``` Conductors supplying two or more motors shall have an ampacity equal to the sum of the full-load current rating of all the motors plus ? % of the highest rated motor in the group. (A)25 (B)80 (C)100 (D)125 ```

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

``` FILLER (A)FILLER (B)FILLER (C)FILLER (D)FILLER ```

FILLER

The voltage of a circuit is best defined as ?. (A)the potential between two conductors (B)the greatest difference of potential between two conductors (C)the effective difference of potential between two conductors (D)the average RMS difference of potential between any two conductors

``` Something that would effect the ampacity of a conductor would be ?. I. Voltage II. Amperage III. Length IV. Temperature (A)I only (B)II only (C)III only (D)IV only ```

``` Alternating currents may be increased or decreased by means of a ?. (A)Motor (B)transformer (C)dynamo (D)megger ```

``` Fixtures supported by the framing members of suspended ceiling systems shall be securely fastened to the ceiling framing member by mechanical means such as ?. I. Bolts or screws II. rivets III. clips identified for this use (A)I only (B)II only (C)III only (D)I, II, or III ```

``` Which has the highest electrical resistance? (A)Brass (B)iron (C)water (D)paper ```

``` Conductor sizes are expressed ?. (A)only in circular mils (B)in AWG or in circular mils (C)in diameter or area (D)in AWG or millimeters ```

``` Of the following, which one is not a type of file? (A)half round (B)bastard (C)tubular (D)mill ```

``` Oil is used in many large transformers to ?. (A)prevent breakdown due to friction (B)lubricate the core (C)cool and insulate the transformer (D)lubricate the coils ```

``` Fractional horsepower universal motors have brushes usually made of ?. (A)copper strands (B)mica (C)carbon (D)thin wire rings ```

When administering first aid to a worker suffering from fright as a result of falling from a ladder, the most important thing to do is ?. (A)position the person to a sitting position (B)cover the person and keep the person warm (C)apply artificial respiration immediately (D)check the rungs of the ladder

``` Filler (A) (B) (C) (D) ```

Filler

``` If a co-worker is burned by acid from a storage battery, the proper first aid treatment is to wash with ?. (A)iodine and leave it open to the air (B)vinegar and apply a wet dressing (C)water and apply vaseline (D)lye and apply a dry bandage ```

``` A type of motor that will not operate on DC is the ?. (A)series (B)short shunt (C)long shunt (D)squirrel cage ```

``` receptacles installed on ? ampere branch circuits shall be the grounding type. (A)15 and 20 (B)25 (C)30 (D)40 ```

``` Where conductors carrying alternating current are installed in metal enclosures or metal raceways, they shall be so arranged as to avoid heating the surrounding metal by induction, to accomplish this ? shall be grouped together. I. all phase conductors II. where used, the neutral III. all equipment grounding conductors (A)I. only (B)I and II only (C)I and III only (D)I, II, and III ```

``` A(an) ? changes AC to DC. (A)battery (B)capacitor (C)alternator (D)rectifier ```

A steel measuring tape is undesirable for use around electrical equipment. the least important reason is the ?. (A)danger of entanglement in rotating machines (B)shock hazard (C)short circuit hazard (D)magnetic effect

``` ? is the ability of material to permit the flow of electrons. (A)Voltage (B)Current (C)Resistance (D)Conductance ```

``` Which of the following two wires are grounded wires in a three-wire cable? (A)reds and white (B)white and black (C)bare and red (D)white and bare ```

A fitting is ?. (A)part of a wiring system that is intended primarily to perform an electrical function (B)pulling cable into a confined area (C)to be suitable or proper for (D)part of a wiring system that is intended primarily to perform a mechanical function

The neutral conductor ?. (A)is always the "white" grounded conductor (B)has 70% applied for a household clothes dryer for a branch circuit (C)never apply ampacity correntions (D)carries the unbalanced current

``` An appliance that is easily moved from one place to another in normal use is a/an ?, appliance (A)on wheels (B)dwelling-unit (C)moveable (D)portble ```

All wiring must be installed so that when completed ?, (A)it meets the current-carrying requirements of the load (B)it is free of shorts and unintentional grounds (C)it is acceptable to Code compliance authorities (D)it will withstand a hy-pot test

``` Rosin is preferable to acid as a flux for soldering wire because rosin is ?. (A)a dry powder (B)a better conductor (C)a nonconductor (D)noncorrosive ```

``` Utilization equipment is equipment which utilizes ? energy of mechanical, chemical, heating, lighting, or similar purposed. I. Chemical II. electric III. heat (A)I only (B)II only (C)III only (D)I, II and III ```

The main purpose of using a cutting fluid when threading conduit is to ?, (A)prevent the formation of rust (B)wash away the metal clips (C)improve the finish of the thread (D)prevent the formation of electrolytic pockets

``` Of the following, the best indication of the condition of the charge of a lead acid battery is the ?. (A)temperature of the electrolyte (B)level of the electrolyte (C)open circuit cell voltage (D)specific gravity ```

``` In general, the most important point to watch in the operation of transformers it the ?. (A)core less (B)exciting current (C)temperature (D)primary voltage ```

``` When mounting electrical equipment's, wooden plugs driven into holes in ? shall not be used. I. masonry II. concrete III. plaster (A)I only (B)II only (C)III only (D)I, II, or III ```

``` Mica is commonly used in electrical construction for ?. (A)commutators bar separators (B)heater cord insulation (C)strain insulators (D)switchbaord panels ```

If a fuse becomes hot under normal load, a probable cause is ?. (A)excessive tension in the fuse clips (B)rating of the fuse is too low (C)insufficient pressure at the fuse clips (D)rating of the fuse is too high

For maximum safety the magnetic contactors used for reversing the direction of rotation of a motor should be ?. (A)operated from independent sources (B)electrically interlocked (C)mechanically interlocked (D)electrically and mechanically interlocked

Large squirrel cage induction motors are usually started at a voltage considerably lower than the line voltage to ?. (A)allow the rotor current to build up gradually (B)permit starting under full load (C)avoid excessive starting current (D)obtain a low starting speed

``` FILLER (A) (B) (C) (D) ```

Filler

``` If the voltage on a light bulb is increased by 10%, the bulb will ?. (A)fail by insulation breakdown (B)have a longer life (C)burn more brightly (D)consume less power ```

``` All edges that are invisible should be represented in a drawing by lines that are ?. (A)dotted (B)curved (C)solid (D)broken ```

``` A light bulb usually contains ?. (A)air (B)neon (C)H2O (D)either a vacuum or gas ```

``` the service disconnecting means shall be installed ?. I. outside the building II. inside a building III. at the nearest point of entrance (A)I only (B)II only (C)III only (D)either I or II ```

``` Critical burns are potentially ?. (A)life-threatening (B)disfiguring (C)disabling (D)all of these ```

``` A set of lights switched from three different places can be controlled by ? switch(es). (A)two 3-way and one 4-way (B)two 3-way and one 2-way (C)2 single-pole (D)four pole ```

Aa fellow electrician is not breathing after receiving an electrical shock, but is no longer in contact with the electricity, the most important thing for you to do is ?. (A)start artificial respiration immediately (B)cover the person and keep warm (C)move the person to a window (D)remove the persons shoes

``` A wrench you would not use to connect rigid metal conduit is a ?. (A)box end (B)chain (C)strap (D)stillson ```

``` The instrument that would prove least useful in testing for opens, grounds, and shorts after the wiring has been completed is the ?. (A)voltmeter (B)ammeter (C)ohmeter (D)megger ```

``` A stranded wire is given the same size designation as a solid wire is it has the same ?. (A)weight per foot (B)overall diameter (C)strength (D)cross-sectional area ```

``` A lighting fixture is to be controlled independently from two different locations. The type of switch required in each of the two locations is a ?. (A)double-pole, double-throw (B)double pole, single throw (C)single-pole, double-throw (D)single-pole, single-throw ```

``` The rating "1000 Ohms, 10 watts" would generally apply to a ?. (A)transformer (B)relay (C)resistor (D)heater ```

The open circuit test on a transformer is a test for measuring its ?. (A)insulation resistance (B)copper loses (C)iron losses (D)equivalent resistance of the transformer

The proper way to open a knife switch carrying a heavy load is to ?. (A)open it with care, to avoid damage to the auxiliary blade by the arc (B)open it slowly so that there will not be a flashover at the contacts (C)tie 5 foot rope on the switch handle and stand clear of the switch (D)open it with a jerk so as to quickly break any arc

``` When thermal overload relays are used for the protection of polyphase induction motors, their primary purpose is to protect the motors in case of ?. (A)Short circuit between phases (B)low line voltage (C)reversal of phases in the supply (D)sustained overlaod ```

The national Electrical Code is sponsored by the ?. (A)underwriters Lab (B)National safety council (C)National Electrical Manufacturers Association (D)National Fire Protection Association

``` FILLER (A) (B) (C) (D) ```

FILLER

An advantage of an electromagnet over a permanent magnet is that ?. (A)an electromagnet can be switched on and off (B)permanent magnets must always be cylindrical (C)am electromagnet requires no power source (D)an electromagnet does not have specific polarity

An excellent diffuser surface is one that ?. (A)diffuses all the incident light (B)scatters light uniformly in all direction (C)absorbs all the incident light (D)transmits all of the incident light

``` Light in converted into electricity ?. (A)in a wet cell (B)in a dry cell (C)in a photovoltaic cell (D)none of those ```

``` the rotating part of a DC motor is known as ?. (A)armature (B)pole (C)stator (D)winding ```

``` A device is used to pull wires through a conduit is called ?. (A)wire tong (B)puller (C)fish tape (D)reel ```

``` In making a resistance test, remember that the resistance of a short circuit is ?. (A)approximately zero (B)midway between high and low (C)infinite (D)slightly above the midrange ```

``` To increase current capacity, battery cells are connected in ?. (A)series (B)parallel (C)series-parallel (D)parallel-series ```

``` The hot resistance of an incandescent lamp is approximately ? time its cold resistance. (A)4 (B)6 (C)8 (D)10 ```

The proper way of measuring an unknown voltage with a multi-tester is to ?. (A)de-energize the circuit first (B)start measuring at the lowest range of the meter (C)start at measuring at the highest range (D)start measuring at the mid range of the meter

``` A capacitor stores ?. (A)a charge (B)voltage (C)current (D)power ```

``` ? has the lowest dielectric strength. (A)paper (B)glass (C)mica (D)teflon ```

``` A form of air switch in which the moving element is a hinged blade wedge between stationary contact blades when closed is a ? switch. (A)safety (B)knife (C)snap (D)toggle ```

If a bare live conductor is touched accidentally, the severity of the electric shock is determined primarily by ?. (A)the size of the wire (B)the amperage flowing in the wire (C)the type of electricity, whether AC or DC (D)the contact resistance between the bare wire and the person at the point of contact.

``` The voltage per turn of the primary of the transformer is ? the voltage per turn of the secondary (A)More than (B)less than (C)twice (D)the same as ```

``` An open resistor when checked with an ohmmeter reads ?. (A)infinite (B)zero (C)low but not zero (D)high but within the tolerance ```

``` The larger the diameter of a wire, the ? is its resistance (A)higher (B)stable (C)unstable (D)lesser ```

``` Service heads and goosenecks in service entrance cable shall be ? point of attachment of the service drops if the building. (A)above the (B)below the (C)at the back of (D)at the center of ```

``` Type TW conductor is a ? type. (A)heat and thermoplastic (B)moisture and heat resistant thermoplastic (C)moisture and heat resistant (D)moisture and thermoplastic ```

``` Steel is hard to magnetize because of its ?. (A)high density (B)high permeability (C)high retentivity (D)low permeability ```

``` A repulsion motor is equipped with a ?. (A)rectifier (B)commutator (C)repeller (D)emitter ```

``` When the temperature of copper wire is raised, the resistance ?. (A)will decrease (B)will increase (C)will be steady (D)is zero ```

``` The capacitor in a capacitor-start induction-run AC motor is connected in series with the ? winding. (A)Running (B)starting (C)compensating (D)field ```

``` The ? is defined as the shortest distance measured between a point on the top surface of any direct buried conductor, cable, conduit and the top surface of finish grade. (A)duct (B)grade (C)cover (D)depth ```

``` An ohmmeter consists of a meter movement in series with ?. (A)a battery (B)a capacitor (C)a spring (D)an inductor ```

``` Grease is a lubricant that is basically a combination of ?. (A)oil and water (B)oil and soap (C)oil and dirt (D)oil, water and soap ```

``` The continuity of a coil of winding may be determined by measuring the resistance of the coil. it the resistance measured is infinite, the coil winding is ?. (A)partially shorted (B)totally shorted (C)open (D)in good condition ```

``` A three-way switch is equivalent to a ? switch. (A)DPST (B)DPDT (C)SPST (D)SPDT ```

The main reason that electrical appliances are connected in parallel rather than series is ?. (A)appliances connected in series are too noisy (B)parallel connection is simpler than a series connection (C)each appliance will draw more current if connected in series (D)it makes the operation of each appliance independent with each other

``` A step-up transformer increases ?. (A)power (B)current (C)frequency (D)voltage ```

``` A circuit with a lagging current means the circuit is ?. (A)capacitive (B)reactive (C)inductive (D)at resonance ```

``` If a conductor has a resistance of 0.2ohms and the length is double, the resistance becomes ?. (A)0.2 (B)0.02 (C)0.4 (D)0.04 ```

For current to flow, the very basic circuit requirements are ?. (A)voltage source, a switch and a conductor (B)a voltage source and a switch (C)voltage source, a dielectric and a conductor (D)voltage source and a conductor

Insulating materials have the function of ?. (A)storing very high current (B)conducting a very large currents (C)preventing a short circuit between conducting wires (D)preventing an open circuit between the voltage source and the load

``` A device or equipment which is suspended from overhead either by means of flexible cord carrying current, or otherwise is a ?. (A)rosette (B)fixture (C)air terminal (D)pendant ```

In a series circuit with unequal resistances ?. (A)the highest resistance has the highest voltage (B)the lowest resistance has the most current (C)the lowest resistance has the highest voltage (D)the highest resistance has the most current

``` The kilowatt-hour meter can be classified as a/an ? instrument. (A)indicating (B)digital (C)recording (D)deflecting ```

``` Transformer cores are built up from laminations rather than from solid metal so that ?. (A)cooling process is better (B)eddy current loss is reduced (C)air circulation is improved (D)oil penetrates the core better. ```

``` An instrument used to check the motor shaft alignment is called a?. (A)dynamometer (B)potentiometer (C)dial indicator (D)micrometer ```

``` In AC circuits, the ratio of kw/kva represents the ? factor (A)quality (B)corona (C)power (D)wave ```

Capacitance increases with ?. (A)higher values of applied voltage (B)smaller plate area and less distance between plates (C)larger plate area and smaller distance between plates (D)larger plate area and greater distance between plates

``` A tool used by a lineman to remove insulation from large cables is called a/an ?. (A)wire gauge (B)lineman's pliers (C)wire stripper (D)electricians knife ```

``` The condition of a liquid electrolyte in a battery is meaured in terms of its ?. (A)acidity (B)specific gravity (C)viscosity (D)water content ```

In a parallel circuit, the total resistance is ?. (A)the sum of all resistances (B)the reciprocal of all resistances (C)larger than the largest resistance in the combination (D)smaller than the smallest resistance in the combination

``` A ? is a machine used to transform mechanical energy into electrical energy. (A)transformer (B)electric motor (C)generator (D)rectifier ```

``` A/an ? is a material with atoms in which the electrons tend to stay in their orbits (A)conductor (B)insulator (C)inductor (D)resistor ```

Hysteresis losses ?. (A)is caused by the coiling of magnets (B)generally increase with direct current in a coil (C)can not be produced in an iron core, because it is a conductor (D)are caused by high frequency alternating current in a coil with an iron core

``` In magnetic and electric circuit analogy, magnetic flux is the analog of ?. (A)conductance (B)resistance (C)voltage (D)current ```

``` A device that reverses the magnetic field polarity to keep a DC motor rotating is a/an ?. (A)commutator (B)field coil (C)armature coil (D)solenoid ```

``` The resistance of wire is directly proportional to the ? and inversely proportional to the cross-sectional area. (A)resistivity (B)volume (C)length (D)permeability ```

``` The energy in a battery cell depends mainly on ?. (A)in physical size (B)its voltage (C)the density (D)the current drawn from it ```

``` Electrical current is measured in terms of ?. (A)electron pressure (B)Electrons passing a point per second (C)watts (D)resistance ```

``` A stop switch is wired ? in a motor circuit. (A)series (B)series-shunt (C)series-parallel (D)parallel ```

``` An autotransformer has ? (A)one coil (B)two coils (C) three coils (D)four coils ```

``` Filler (A) (B) (C) (D) ```

Filler

``` Concrete, brick or tile walls are considered as being ?. (A)isolated (B)insulators (C)grounded (D)dry locations ```

``` FIller (A) (B) (C) (D) ```

Filler

A corroded electrical connection ?. (A)decreases the voltage drop (B)decreases the resistance of the connection (C)increases the resistance at the connection (D)increases the ampacity at the connection

``` An AC ammeter or voltmeter is calibrated to read RMS values; this means the meter is reading the ? value (A)maximum (B)peak (C)average (D)effective ```

``` Filler (A) (B) (C) (D) ```

Filler

The location of a wall receptacle outlet in the bathroom of a dwelling shall be installed ?. (A)the Code does not specify the location (B)adjacent to the toilet (C)within 36" of the outside edge of basin (D)across from the shower

``` On a delta three-phase four-wire secondary, how many hot wires may use the common neutral? (A)1 (B)2 (C)3 (D)4 ```

``` It shall be permissible to apply a demand factor of ? to the nameplate-rating load of four or more appliances fastened in place served by the same feeder in a dwelling (A)70% (B)75% (C)60% (D)80% ```

``` Insulated nonmetallic boxes are made of ?. I. polyvinyl chloride II. bakelite III. Bower-barff lacquer (A) I only (B)II only (C)I and II only (D)I, II, and III ```

``` Tungsten-filament lamps can be used on ? circuits. (A)AC (B)DC (C)AC and DC (D) none of these ```

``` An overcurrent protective device with a circuit opening fusible part that is heated and severed by the passage of overcurrent through it is called a ?. (A)current-limiter (B)fuse (C)circuit breaker (D)thermal overload ```

``` The service conductors between the terminals of the service equipment and a point usually outside the building, clear of building walls, where joined by tap or splice to the service drop is called the ? (A)service drop (B)service-entrance conductors (C)service equipment (D)none of theses ```

``` If you needed to know the provisions for the for the installation of stationary storage batteries, you would refer to Article ? of the Code. (A)225 (B)445 (C)460 (D)480 ```

``` A chain wrench can be used ?. I. with one hand after the chain is around the conduit II.in confined places and close to walls III. for all sizes of conduit (A)I and II only (B)I and III only (C)II and III only (D)I, II, and III ```

``` To cut rigid conduit you should ?. (A)use 3-wheel pipe cutter (B)use a cold chisel and ream the ends (C)use hack saw and ream the ends (D)Order it cut to size ```

``` A fixture that exceeds ? in any dimension shall not be supported by the screw shell of a lampholder. (A)8" (B)12" (C)16" (D)20" ```

Is it permissible to install direct current and alternating current conductors in the same outlet box? (A)yes, if insulated for the maximum voltage of any conductor (B)no, never (C)yes, if the ampacity is the same for both conductors (D)yes, in dry places

Electrical equipment shall be installed ?. (A)Better than the minimum Code allows (B)according to the local Code when more stringent then the NEC (C)according to the NEC regardless of local code (D)according to the local Code when less stringent than the NEC

``` Voltage drop in a wire is ?. (A)the wire resistance times the voltage (B)a percentage of the applied voltage (C)a function of insulation (D)part of the load voltage ```

``` What type of capacitor is used as a start capacitor with compressor motor. (A)paper (B)electrolytic (C)ceramic (D)mica ```

``` Galvanized conduit has a finish exterior and interior of ?. (A)lead (B)copper (C)nickel (D)zinc ```

``` Which of the following is the best type of saw to use to cut a 3" diameter hole through 1/2" plywood? (A)circular saw (B)saber saw (C)hack saw (D)crosscut saw ```

``` Which of the following machine screws has the smallest diameter? (A)6-32 x 1" (B)10-32 x 3/4" (C)8-32 x 1/2" (D)10-24 x 3/8" ```

``` Which of the following is the most important factor contributing to an electricians safety on the job? (A)work at a slow pace (B)always wear leather gloves (C)be alert at all times (D)never be late for break ```

``` A one-quarter bend in a raceway is equivalent to an angle of ? degrees. (A)90 (B)45 (C)25 (D)180 ```

``` A 3ohm, a 6ohm, a 9ohm, and a 12ohm resistor are connected in parallel. Which resistor will consume the most power. (A)3 (B)6 (C)9 (D)12 ```

``` Listed ceiling (paddle) fans that do not exceed ? pounds in weight, with or without accessories, shall be permitted to be supported by outlet boxes identified far such use. (A)35 (B)45 (C)50 (D)60 ```

The best way to lay out a 40 foot long straight line on a floor is to ?. (A)Use a steel measuring tape with dark crayon (B)use a plumb bob with long string (C)use a 2 x 4 and a lead pencil (D)use a chalk line

``` Silver is used on electrical contacts to ?. (A)avoid corrosion (B)improve efficiency (C)improve continuity (D)improve appearence ```

``` Electricians should be familiar with the rules and regulations of their job mainly to ?. (A)eliminate overtime (B)increase wages (C)perform their duties properly (D)save time ```

``` To determine if the raceway is truly vertical, an electrician would use a ?. (A)plumb bob (B)transit level (C)square (D)level ```

In order to prevent a safety hazard, an electrician should never ?. (A)strike a hardened steel surface with a hardened steel hammer (B)use a soft brass hammer to strike a soft brass surface (C)strike a soft iron surface with a hardened steel hammer (D)us a soft iron hammer to strike a hardened steel surface

``` Service drop conductors not in excess of 600 volts shall have a minimum clearance of ? feet over residential property and driveways, and those commercial areas not subject to truck traffic. (A)10 (B)12 (C)15 (D)18 ```

``` When conduit or tubing nipples having a maximum length not to exceed 24" are installed between boxes, they shall be permitted to be filled ? percent of its total cross-sectional area. (A)31 (B)40 (C)53 (D)60 ```

``` Before using rubber gloves when working on high voltage equipment, the gloves should be ?. (A)cleaned inside and out (B)tested to withstand the high voltage (C)oiled inside and out (D)brand new ```

``` Stranded wire should be ? before being placed under a screw head. (A)tinned (B)twisted together tightly (C)coated with an inhibitor (D)sanded ```

``` A 3ohm, a 6ohm, a 9ohm, and a 12ohm resistor are connected in series. Which resistor will consume the most power. (A)3 (B)6 (C)9 (D)12 ```

``` What article refers to grounding? (A)230 (B)240 (C)250 (D)300 ```

``` Filler (A) (B) (C) (D) ```

Filler

``` A fusestat is different than the ordinary plug fuse because of fusestat ?. (A)doesn't have threads (B)has left-hand threads (C)has different size threads (D)has an aluminum screwshell ```

``` Filler (A) (B) (C) (D) ```

Filler

``` A fuse on a 20 amp branch circuit has blown. The fuse is replaced with a 20 amp fuse and the fuse blows when the switch is turned on. the electrician should ?. (A)check the ground rod connection first (B)change to a circuit breaker (C)install a 30 amp fuse (D)check the circuit for a problem ```

``` To sharpen an electricians knife, you would use a ? stone. (A)rubber (B)carborundum (C)rosin (D)bakelite ```

``` The decimal equivalent of 3/16" is ?. (A)0.125 (B)0.1875 (C)5.33 (D)none of these ```

``` When drilling into a steel I-beam, the most likely cause for breaking a drill bit would be ?. (A)the drill bit is too dull (B)too slow a drill speed (C)too much pressure on the bit (D)too much cutting oil on bit ```

``` Filler (A) (B) (C) (D) ```

Filler

``` A/an ? is a protective device for limiting surge voltages by discharging or bypassing surge current, and it also prevents continued flow of follow current while remaining capable of repeating these functions. (A)surge arrester (B)automatic fuse (C)fuse (D)circuit breaker ```

``` A/an ? conductor is one having one or more layers of non-conducting materials that are not recognized as insulation. (A)bare (B)covered (C)insulated (D)wrapped ```

``` In a DC circuit, the ratio of watts to voltamperes is ?. (A)unity (B)greater than one (C)less than one (D)cannot tell what it might be ```

``` A current limiting overcurrent protective device is a device which will ? the current flowing in the faulted circuit. (A)reduce (B)increase (C)maintain (D)none of these ```

A or C?

``` The horsepower rating of a motor ?. (A)is a measure of motor efficiency (B)is the input to the motor (C)cannot be changed to watts (D)is the output of the motor ```

``` A common fuse and circuit breaker works on the principal that ?. (A)voltage develops heat (B)voltage breaks down insulation (C)current develops heat (D)current expands a wire ```

The voltage will lead the current when the ? in the circuit. (A)inductive reactance exceeds the capacitive reactance (B)reactance exceeds the resistance in the circuit (C)resistance exceeds reactance (D)capacitive reactance exceeds the inductive reactance

``` Filller (A) (B) (C) (D) ```

Filler

``` ? is performing a function without the necessity of human intervention. (A)Remote-control (B)automatic (C)semi-automatic (D)controller ```

``` A 1000 watt, 120 volt lamp uses electrical energy at the same rate as a 14.4 ohm resistor on ?. (A)120 volts (B)115 volts (C)208 volts (D)240 volts ```

``` Filler (A) (B) (C) (D) ```

Filler

``` Which of the following is not used to fasten equipment to concrete? (A)expansion bolt (B)lead shield (C)rawl plug (D)steel bushing ```

``` 3-way and 4-way switches operate a light shall have the wiring switched in the ? conductor. (A)grounded (B)identified (C)ungrounded (D)neutral ```

``` The decimal equivalent of 9/16 is ?. (A)0.5625 (B)0.675 (C)0.875 (D)none of these ```

The information most useful in preventing the recurrence of a similar type accident when making out an accident report would be ?. (A)the nature of the injury (B)the cause of the accident (C)the weather conditions at the same time (D)the age of the person involved

``` Filler (A) (B) (C) (D) ```

Filler

``` Artificial respiration after a severe electrical shock is necessary when the chock results in ?. (A)broken limbs (B)bleeding (C)stoppage of breathing (D)unconciousness ```

``` If the circuit voltage is increased, all else remains the same, only the ? will change. (A)resistance (B)current (C)ampacity (D)conductivity ```

The two methods of making joints or connections for insulated cables are soldered connections and by means of solderless connection devices (wirenuts). the advantages(s) of a solderless connection (wirenut) is/are ?. I. will not fail under short circuit due to melting of solder II. mechanical strength as great as solder III. reduces the time required to make a splice (A)I only (B)I and II only (C)II and III only (D)I, II and III

``` Filler (A) (B) (C) (D) ```

Filler

``` When accidentally splashing a chemical into the eyes, the best immediate first aid solution is to ?. (A)look directly into the sun (B)rub eyes with dry cloth (C)flush eyes with clean water (D)close eyes quickly ```

It is generally not good practice to supply lamps and motors with the same circuit because. I. it is more economical to operate motors on a higher voltage than that of a light circuit II. overloads and short circuits are common on motors circuits and would put the lights out III. when a motor is started it would cause the lights to dim or blink (A)I only (B)II only (C)III only (D)I,II, and III

``` Filler (A) (B) (C) (D) ```

Filler

``` The code considers low voltage to be ?. (A)480 volts or less (B)1000 volts or less (C)24 volts (D)23 volts ```

``` Filler (A) (B) (C) (D) ```

Filler

A high spot temperature in a corroded electrical connection is caused by a (an) ? (A)increase in the flow of current through the connection (B)decrease in the voltage drop across the connection (C)increase in the voltage drop across the connection (D)decrease in the effective resistance of the connection

``` Filler (A) (B) (C) (D) ```

Filler

``` because aluminum is not a magnetic metal, there will be ? present when aluminum conductors are grouped in a raceway. (A)no heat due to voltage (B)no heating due to hysteresis (C)no induced currents (D)none of these ```

``` A switch is a device for ? I. making or braking connections II. changing connections III. interruption of circuit under short-circuit conditions (A)I only (B)I and II only (C)II and III only (D)I, II, and III ```

At least two persons are required to be present during a high-voltage test because ?. (A)one person can cover while the one is on the break (B)high voltage is too heavy for one (C)if one person is the hurt the other person can help (D)it eliminates overtime

One of the essential functions of any switch is to maintain a ?. (A)good high-resistance contact in the closed position (B)good low-resistance contact in the closed position (C)good low-resistance contact in the open position (D)good high-resistance contact in the open position

``` Filler (A) (B) (C) (D) ```

Filler

``` When the ground resistance exceeds the allowable value of 25 ohms, the resistance can be reduced by ? I. paralleling ground rods II. using a longer ground rod III. using a larger diameter ground rod IV. chemical treatment of the soil (A)II and III only (B)I, II and III only (C)II, III and IV only (D)I, II, III, and IV ```

``` Silver and gold are better conductors of electricty than copper; however, the main reason copper is used is its ?. (A)weight (B)strength (C)melting point (D)cost is less ```

``` Standard lengths of conduit are in 10 foot lengths. A required feeder raceway is 18 yards in length, how many lengths of 10 foot conduit would you needs? (A)4 (B)5 (C)6 (D)none of these ```

``` The term "open circuit" means ?. (A)the wiring is in an open area (B)the wiring is exposed on a building (C)all parts of the circuit are not in contact (D)the circuit has one end exposed ```

``` Filler (A) (B) (C) (D) ```

Filler

``` Conduit should be installed as to prevent the collection of water in it between outlets. The conduit should not have a ?. (A)low point at an outlet (B)high point at an outlet (C)high point between successive outlets (D)low point between successive outlets ```

``` Brass is an alloy of ?. (A)zinc and copper (B)lead and copper (C)tin and lead (D)lead and tin ```

``` Which type of the following portable fire extinguishers should be used on a live electrical fire. (A)carbon dioxide (B)water (C)foam (D)soda-acid ```

``` Enclosed knife switches that require the switch to be open before the housing door can be opened, are called ? switches. (A)release (B)air-break (C)safety (D)service ```

``` Filler (A) (B) (C) (D) ```

Filler

``` What article of the Code addresses high-voltage (over 1000 volts)? (A)450 (B)230 (C)680 (D)490 ```

``` A close nipple ?. (A)is always 1/2" or less in length (B)has not threads (C)has only internal threads (D)has threads over its entire length ```

When applying rubber tape to an electrical splice, it would be necessary to ?. (A)stretch the tape properly during the application (B)apply an adhesive to the splice before applying the tape (C)apply the rubber tape after any other type (D)apply heat to the tape when installing

``` A stranded wire with the same AWG as a solid wire ?. (A)is used for higher voltages (B)has a higher ampacity (C)is larger in total diameter (D)has the same resistance ```

``` A limit switch is used on a piece of machinery to open the circuit when the ?. (A)current exceeds a preset limit (B)travel reaches a preset limit (C)pressure exceeds a present limit (D)temperature reaches a present limit ```

``` Filler (A) (B) (C) (D) ```

Filler

``` When rigid metal conduits are buried, the minimum cover required by the Code is ?. (A)6 (B)12 (C)18 (D)24 ```

Which of the following is not considered part of a luminaire. (A)ballast (B)a lampholder (C)lamp or lamps (D)parts designed to position the light source

Locknuts are sometimes used in making electrical connections on studs, in these cases, the purpose of the locknuts is to ?. (A)be able to connect several wires to one stud (B)make it difficult to tamper with the connection (C)make a tighter connection (D)prevent the connection from loosening under vibration

``` To cut rigid conduit, you should ?. (A)use a 3-wheel pipe cutter (B)use a cold chisel and ream the ends (C)use a hacksaw and ream the ends (D)order is cut to size ```

``` In the course of normal operation the instrument which will be least effective in indicating that a generator may overhear because it is overloaded, is ?. (A)a wattmeter (B)a voltmeter (C)an ammeter (D)a stator thermocouple ```

``` Two switched in one box under one face-plate is called a ?. (A)double-pole switch (B)two-gang switch (C)2-way switch (D)mistake ```

``` A conduit body is ?. (A)a cast fitting such as FD or FS box (B)a standard 10 foots length of conduit (C)a sealtight enclosure (D)an "LB" or "T", or similar fitting ```

A dwelling unit is ?, according to article 100. (A)one unit of an apartment (B)one or more rooms used by one or more persons (C)one or more rooms with space for eating, living, and sleeping (D)a single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

``` Enclosed means, surrounded by a ? which will prevent persons from accidentally contacting energized parts. I. wall II. fence III. housing or case (A)I only (B)II only (C)III only (D)I, II, and III ```

``` Where the conductor material is not specified in the Code, the conductors are assumed to be ?. (A)busbars (B)aluminum (C)copper-clad aluminum (D)copper ```

``` The voltage lost across a portion of a circuit is called the ?. (A)power loss (B)power factor (C)voltage drop (D)apparent VA ```

``` In a series circuit ? remains the same. (A)resistance (B)current (C)voltage (D)wattage ```

``` batteries supply ? current. (A)positive (B)negative (C)direct (D)alternating ```

``` Electron flow produced by means of applying pressure to a material is called ?. (A)photo conduction (B)electrochemistry (C)piezoelectricity (D)thermoelectricity ```

``` Raceways shall be provided with ? to compensate for thermal expansion and contraction. (A)accordion joints (B)thermal fittings (C)expansion joints (D)contro-spansion ```

``` An alternation is ?. (A)one-half cycle (B)one hertz (C)one alternator (D)two cycles ```

``` What is the function of a neon glow tester? I. determines if circuit is live II. determine polarity of DC circuits III. determines if circuit is AC or DC (A)I only (B)II only (C)III only (D)I, II, and III ```

``` What chapter in the Code is Mobile Homes referred to? (A)Chp 3 (B)Chp 5 (C)Chp 6 (D)Chp 8 ```

``` Never approach a victim of an electrical injury until you ?. (A)find a witness (B)are sure the power is turned off (C)have a first-aid kit (D)contact the supervisor ```

``` A wattmeter indicates ?. I. real power II. apparent power if PF is not in unity III. power factor (A)I only (B)II only (C)III only (D)I, II, and III ```

``` The connection of ground clamp to a grounding electrode shall be? (A)accessible (B)visible (C)readily accessible (D)in sight ```

The current will lead the voltage when ?. (A)inductive reactance exceeds the capacitive reactance in the circuit (B)reactance exceeds the resistance in the circuit (C)resistance exceeds the reactance in the circuit (D)capacitive reactance exceeds the inductive reactance in the circuit

``` Mandatory rules of the Code are identified by the use of the words ?. (A)should (B)shall (C)must (D)could ```

``` Which of the following is not one of the considerations that must be evaluated in judging equipment? (A)wire-bending and connection space (B)arcing effects (C)longevity (D)electrical insulation ```

``` To increase the range of an ammeter which one of the following is most commonly used? (A)a current transformer (B)a condenser (C)an inductance (D)a straight shunt (not U-shaped) ```

``` If a test lamp lights when places in series with a capacitor and suitable source of DC, it is a good indication that the capacitor is ?. (A)fully charged (B)short-circuited (C)open-circuited (D)fully discharged ```

``` Two 500 watt lamps connected in series across a 110 volt line draws 2 amps/ The total power consumed is ? watts (A)50 (B)150 (C)220 (D)1000 ```

``` To transmit power economically over considerable distances, it is necessary that the voltages be high. High voltages are readily obtainable with ? currents. (A)rectified (B)AC (C)DC (D)carrier ```

The resistance of a copper wire to the flow of electricity ?. (A)decreases as the length of the wire increases (B)decreases as the diameter of the wire decreases (C)increases as the diameter of the wire increases (D)increases as the length of the wire increases

``` Enclosed knife switches that requires the switch to be open before the housing door can be opened, are call ? switches. (A)release (B)air-break (C)safety (D)service ```

``` A type of cable protected by a spiral metal cover is called ? in the field (A)BX (B)greenfield (C)sealtight (D)Romex ```

``` The resistance of a circuit may very due to ?. (A)A loose connection (B)change in voltage (C)change in current (D)induction ```

``` Grounding conductors running with circuit conductors may be ?. I. uninsulated II. a continuous green, if covered III. continuous green with yellow stripe, if covered (A)I only (B)II only (C)III only (D)I, II, and III ```

For voltage and current to be in phase, I. the circuit impedance has only resistance II. the voltage and current appear at the their zero and peak values at the same time (A)I only (B)II only (C)both I and II (D)neither I nor II

The definition of ampacity ?. (A)the current-carrying capacity of conductors expressed in volt-amps (B)the current-carrying capacity expressed in amperes (C)the current-carrying capacity of conductors expressed in wattage (D)the current in amperes conductor can carry continuously under the conditions of use without exceeding its temperature rating

Continuous duty is ?. (A)a load where the maximum current is expected to continue for three hours or more (B)a load where the maximum current is expected to continue for one hour or more (C)intermittent operation in which the load conditions are regularly recurrent (D)operation t a substantially constant load for an indefinitely long time.

``` A location classified as cry may be temporarily subject to ?. I. wetness II. dampness (A)I only (B)II only (C)both I and II (D)neither I nor II ```

``` A ? cabinet is an enclosure designed either for surface or flush mounting and provided with a frame, mat, or trim in which a swinging door or doors are or may be hung (A)cabinet (B)panelboard (C)cutout box (D)switchboard ```

``` 15 ohm resistance carrying 20 amperes of current uses ? watts of power. (A)300 (B)3000 (C)6000 (D)none of these ```

``` When using a #14-2 with ground Romex, the ground ? carry current under normal operation. (A)will (B)will not (C)will sometimes (D)none of these ```

``` s compared with solid wire, stranded wire of the same gauge size is ?. (A)better for higher voltages (B)given higher ampacity (C)easier to skin (D)larger in total diameter ```

``` The type of AC system commonly used to supply both commercial light and power is the ?. (A)3-phase, 3-wire (B)3-phase, 4-wire (C)2-phase, 3-wire (D)single-phase, 2-wire ```

``` Filler (A) (B) (C) (D) ```

Filler

The most important reason for using a condulet-type fitting in preference to making a bend in a one inch conduit is to ?. (A)avoid the possible flattening of the conduit when making the bend (B)cut down the amount of conduit needed (C)make a neater job (D)make wire pulling eaier

``` Filler (A) (B) (C) (D) ```

Filler

``` Rubber insulation on an electrical conductor would quickly be damaged by continuous contact with ? (A)water (B)acid (C)oil (D)alkali ```

``` A tester using an ordinary light bulb is commonly used to test ?. (A)whether a circuit is AC or DC (B)for polarity of a DC circuit (C)an overloaded circuit (D)for grounds on 120 volt circuits ```

``` Pigtails are used on brushes to ?. (A)compensate for wear (B)supply the proper brush tension (C)make a good electrical connection (D)hold the brush in the holder ```

``` Filler (A) (B) (C) (D) ```

Filler

``` A ? stores energy in much the same manner as spring stores mechanical energy. (A)resistor (B)coil (C)capacitor (D)none of these ```

``` n overcurrent trip unit of a circuit shall be connected in series with each ?. (A)transformer (B)grounded conductor (C)overcurrent device (D)ungrounded conductor ```

``` ? lighting is a string of outdoor lights suspended between two points. (A)pole (B)festoon (C)equipment (D)outline ```

``` Filler (A) (B) (C) (D) ```

Filler

A rigid conduit connecting to an outlet box should have a ?. (A)bushing and locknut on the outside (B)bushing on the outside and a locknut on the inside (C)locknut and bushing on the inside (D)locknut on the outside and a bushing on the inside

``` Identified, as used in the Code in reference to a conductor or its terminals, means that such a conductor or terminal is to be recognized as ?. (A)grounded (B)bonded (C)colored (D)marked ```

``` A toaster will produce less heat on low voltage because. (A)its total watt output decreases (B)the current will decrease (C)the resistance has not changed (D)all of these ```

``` If the current flow through a conductor is increased, the magnetic field around the conductor ?. (A)is unchanged (B)becomes stronger (C)collapses (D)becomes weaker ```

``` Comparing a #6 conductor to a #10 conductor of equal lengths, the #6 will have lower ?. (A)cost (B)weight (C)resistance (D)strength ```

The definition of ambient temperature is ?. (A)the temperature of the conductor (B)the insulation rating of the conductor (C)the temperature of the area surrounding the conductor (D)the differential temperature

The primary reason for using a hacksaw blade with fine teeth rather than coarse teeth when cutting large stranded conductors is ?. (A)a coarse blade would overheat the conductor (B)a coarse blade breaks too eaily (C)to avoid snagging or pulling strands (D)a fine blade will bend easier

``` a standard residential service is a 3-wire, 240 volt single-phase system. The maximum voltage to ground in this system would be ? volts (A)115 (B)120 (C)199 (D)208 ```

``` When working on a motor, the electrician should ? to prevent accidental starting of the motor. (A)removes the fuses (B)ground the motor (C)shut off the dwitch (D)removes the belts ```

It is the responsibility for the electrician to make sure his tools are in good condition because ?. (A)defective tools can cause accidents (B)the boss may want to use them (C)the company will pay for only one set of tools (D)a good job requires perfect tools

``` Continually overloading a conductor is a poor practice because is causes ? (A)the conductor to melt (B)the insulation to deteriorate (C)the conductor to shrink (D)damage to the raceway ```

``` For better illumination you would (A)random space the lights (B)even spacing, numerous lights (C)evenly spaced, higher ceilings (D)cluster lights ```

``` A junction box above a lay-in ceiling is considered ?. (A)concealed (B)accessible (C)readily accessible (D)recessed ```

``` Which of the following metals is most commonly used in the filament of a bulb? (A)aluminum (B)mercury (C)tungsten (D)platinum ```

``` Electrical equipment can be defined as ?. I. fittings II. appliances III. devices IV. fixtures (A)! only (B)! nd IV only (C)!, III, and IV (D)all of these ```

If two equal resistance conductor are connected in parallel, the resistance of the two conductors equal to ?. (A)the resistance of one conductor (B)twice the resistance of one conductor (C)one-half the resistance of one conductor (D)the resistance of both conductors

``` Wire connections should encircle binding posts in the ? manner the nut turns to tighten. (A)opposite (B)same (C)reverse (D)different ```

``` Filler (A) (B) (C) (D) ```

Filler

``` The primary and secondary windings of a transformer always have ?. (A)a common magnetic circuit (B)the same size wire (C)separate magnetic circuits (D)the same number of turns ```

``` Which of the following is not the force which moves electrons (A)EMF (B)voltage (C)potential (D)current ```

``` A motor with a wide speed range is a ?. (A)DC motor (B)AC motor (C)synchronous motor (D)induction motor ```

``` The "stator" of an AC generator is another name for ?. (A)rotating portion (B)slips rings (C)stationary portion (D)hoising ```

``` Where galvanized conduit is used, the main purpose of the galvanizing is to ?. (A)slow down rust (B)provide better continuity (C)provide better strength (D)provide a better surface for painting ```

``` To lubricate a motor sleeve bearing, you would use ?. (A)grease (B)vaseline (C)oil (D)graphite ```

``` When soldering conductors, flux is used ?. (A)to heat the conductors quicker (B)to keep the surfaces clean (C)to prevent loss of heat (D)to bond the conductors ```

``` ? means so constructed or protected that exposure to the weather will no interfere with successful operation. (A)rainproof (B)weather tight (C)weather resistant (D)all weather ```

``` The current used for charging storage batteries is ?. (A)square wave (B)direct (C)alternating (D)variable ```

``` You should close a knife switch firmly and rapidly as there will be less ?. (A)likelihood of arcing (B)wear on the contacts (C)danger of shock (D)energy used ```

``` If one complete cycle occurs in 1/30 of a second, the frequency is ?. (A)30 hertz (B)60 cycle (C)115 cycle (D)60 hertz ```

``` An instrument that measures electrical energy is called the ?. (A)galvanometer (B)wattmeter (C)dynamometer (D)watthour meter ```

``` In electrical wiring, "wire nuts" are used to ?. (A)connect wires to terminals (B)join wires and insulate the joint (C)connect the electrode (D)tighten the panel studs ```

``` Which of the following would be the best metal for a magnet? (A)steel (B)aluminum (C)lead (D)tin ```

``` An electrician may use a megger ?. (A)to determine the RPM of a motor (B)top determine the output of a motor (C)to check the wattage (D)to test a lighting circuit for a ground ```

``` The least important thing in soldering two conductors together is to ? (A)use plenty of solder (B)use sufficient heat (C)clean he conductors (D)use proper flux ```

``` The property of a circuit tending to prevent the flow of current and at the same time causing energy to be converted into heat is referred to as ?. (A)the inductance (B)the resistance (C)the capacitance (D)the reluctance ```

``` Rigid conduit is generally secured to outlet boxes by ?. (Abeam clamps) (B)locknuts and bushings (C)set screws (D)offsets ```

Which one of the following is not a safe practice when lifting heavy items? (A)use arm and leg muscles (B)keep your back as upright as possible (C)keep lifting a heavy object until you get help (D)keep lighting a heavy object until you get help

``` A thermocouple will transform ? into electricity. (A)current (B)heat (C)work (D)watts ```

``` In a resistance, the wall switch controlling the ceiling light is usually ?. (A)connected across both lines (B)a double pole switch (C)connected in one line only (D)a 4-way switch ```

``` A switch which opens automatically when the current exceeds a predetermines limit would be called a ?. (A)limit switch (B)circuit breaker (C)DT disconnect (D)contactor ```

``` A wattmeter is a combination of which two of the following meters? I. ammeter II. ohmeter III. phase meter IV. volt meter V. power factor meter (A)II and III (B)I and V (C)I and IV (D)II and V ```

``` Filler (A) (B) (C) (D) ```

Filler

``` Acid is not considered a good flux when soldering conductors because it? (A)smells bad (B)is corrosive (C)is non-conductive (D)costs too much ```

If the spring tension on a cartridge fuse clip is weak, the result most likely would be ? (A)the fuse would blow immediately (B)the fuse clips would become warm (C)the voltage to the load would increase (D)the supply voltage would increase

``` The branch-circuit loads specified by the Code for lighting and receptacles are considered ? (A)minimum loads (B)maximum loads (C)loads to be served (D)peak loads ```

``` The conductor with the highest insulation temperature rating is ?. (A)UF (B)TW (C)THWN (D)THHN ```

``` After cutting a conduit, to remove the rough edges on both ends, the conduit ends should be ?. (A)reamed (B)filed (C)sanded (D)ground ```

``` To fasten a raceway to a solid concrete ceiling, you would use ?. (A)toggle bolts (B)expansion bolts (C)wooden plugs (D)rawl plugs ```

``` A commutator of a generator should be cleaned with which of the following? (A)emery cloth (B)graphite (C)a smooth file (D)fine sandpaper ```