Exam 1

Question 1

1.5k ohms is equivalent to

Answer 1

5000 ohms

Question 2

____ will cause a circuit to trip or a fuse to blow

Answer 2

A short circuit

Question 3

A current flow of .006 amps can be expressed as

Answer 3

6 mA

Question 4

A digital VIM will supply voltage to the test leads when set on

Answer 4

The Ohm mode

Question 5

A fuse of circuit breaker ____

Answer 5

Should be wired in series with the load

Question 6

A good example of a ferromagnetic material could be

Answer 6

Iron

Question 7

A good example of a material with one valence electron would be

Answer 7

Silver

Question 8

A series circuit is a circuit that has ____ paths for current flow

Answer 8

Only one

Question 9

A static change can be

Answer 9

Positive or negative

Question 10

A typical 120V household branch circuit has a properly sized fuse in series with the load, the fuse will open if ____

Answer 10

All of the above

Question 11

According to the NEC table 310-16, a copper conductor can carry ____ current as an aluminum conductor of equal size and insulation type

Answer 11

A large amount of

Question 12

Clamp on ammeters measure the amount of current flow in a conductor by ____

Answer 12

Sensing the strength of the magnetic field around the conductor

Question 13

Current flow in a parallel circuit is

Answer 13

Additive

Question 14

Current flow is measured in

Answer 14

Amps

Question 15

Eight 1.4V NiCad c L’s rated 40 Ahr have been wired in series the battery will have a rating of

Answer 15

11.2 V / 40 Ahr

Question 16

Electrons can be displaced from the atoms by the use of

Answer 16

All of the above

Question 17

If four 6 volt batteries are wired in parallel their combined voltage would be

Answer 17

6 volts

Question 18

In order for electricity to produce power

Answer 18

The electrical energy in the circuit must be converted into other forms of energy

Question 19

Magnetic line of flux ____

Answer 19

Repel each other

Question 20

Magnetic lines of force ____

Answer 20

Flow from north to south

Question 21

Name the device the would not fr considered a load in an electric current

Answer 21

Switch

Question 22

Of the following conductors, which would have the highest current carrying capacity

Answer 22

AWG #12 THHN

Question 23

Of the following instruments the type that would automatically select the proper voltage range when an unknown voltage is applied is ____

Answer 23

An auto ranging multimeter

Question 24

One important quality of nickel cadmium batteries is

Answer 24

They have an extremely long life span

Question 25

Overcharging a cell can result in

Answer 25

All of the above

Question 26

Power in a circuit is measured in

Answer 26

Watts

Question 27

Power must never be applied to a multimeter when it is set to read ____

Answer 27

Resistance

Question 28

Resistance is measured in

Answer 28

Ohms

Question 29

Seventy five milliamps can be written as

Answer 29

0.75A

Question 30

The ____ is the quality of electrons

Answer 30

Coulomb

Question 31

The atom is made up of

Answer 31

Protons, neutrons, electrons

Question 32

The device that provides protection from a lightning strike by arching the current to ground would be

Answer 32

The lightning rod

Question 33

The electron is a particle that carry’s ____ charge

Answer 33

Negative

Question 34

The instrument used to test the specific gravity of an electrolytic solution in a battery

Answer 34

A hydrometer

Question 35

The law of charges states ____

Answer 35

Like charges repel, unlike charges attract

Question 36

The term electrical pressure and potential are sometimes used to describe

Answer 36

Voltage

Question 37

The term which represents an opposition to current flow in a DC circuit ____

Answer 37

Resistor

Question 38

The type of cell that can be recharged would be ____

Answer 38

Secondary

Question 39

To check the source voltage in parallel circuit, you must connect the voltmeter ____

Answer 39

Across the load in any branch circuit

Question 40

Voltage drop across any load in a parallel circuit

Answer 40

Remains the same regardless of resistance

Question 41

What are valence electrons?

Answer 41

Electrons located in the outermost orbit of an electron

Question 42

What is an insulator?

Answer 42

A material that hinders the flow of electricity

Question 43

What is the current capacity of a THHN #6 AWG copper conductor in a raceway with an other conductor, operating in ambient temperature of 86 F

Answer 43

75 Amps

Question 44

What type of instrument produces a two dimensional image of a sine wave by measuring an amount of voltage during a period of time?

Answer 44

The oscilloscope

Question 45

When a ____ is used in a circuit it must be connected in series with the loads

Answer 45

Ammeter

Question 46

When cells are connected in series ____

Answer 46

Voltage will add and the current capacity will stay the same

Question 47

When running conductors over long distances, you must keep the wire’s ____ to a minimum to prevent excessive voltage drops

Answer 47

Resistance

Question 48

When solving a combination circuit problem

Answer 48

Use both series and parallel circuit rules

Question 49

Which of the following laws applies to all circuits

Answer 49

Power is additive

Question 50

Which statement is true regarding voltage drop in a series circuit

Answer 50

The sum of all voltage drops on a circuit must be equal to the applied voltage