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Question 0

An electrician should always consider the circuit to be hot unless he definitely knows otherwise.the main reason is to avoid _____.

Answer 0

Personal injury

Question 1

A solenoid is a/an

Answer 1

Electromagnet

Question 2

The best thing to cut PVC conduit within a tight area is ____.

Answer 2

A nylon string.

Question 3

If a live conductor is contacted accidentally, the severity of the electrical shock is determined primarily by________.

Answer 3

The contact resistance

Question 4

Ohm’s law is ________.

Answer 4

The relationship between voltage

, current and resistance.

Question 5

What is the normal taper on a standard conduit thread-cutting die?

Answer 5

3/4’’ per foot

Question 6

In an AC circuit the radio of the power in watts to the total volt-amps is called the________.

Answer 6

Power factor.

Question 7

The total load on any over current device located in a panel board shall not exceed______of its rating where in normal operation the load will continue for 3hr or more.

Answer 7

80%

Question 8

Four heaters, each having a resistance of 30 ohms are connected in series across a 600 volt train circuit, the current is ____amperes.

Answer 8

5

Question 9

A ladder which is painted is a safety hazard mainly because the paint ______.

Answer 9

May conceal weak spots in the rails or rungs

Question 10

The chemical used as the agent in fire extinguisher to fight electrical fires is __________.

Answer 10

Carbon dioxide (CO2)

Question 11

A location classified as ______may be temporarily subject to dampness and wetness.

Answer 11

Dry

Question 12

The average dry cell battery gives an approximate voltage of _______.

Answer 12

1.5-1.

Question 13

The _____circuit is that portion of a wiring system beyond the final over current protection.

Answer 13

Branch

Question 14

In a series circuit when the voltage remains constant and the resistance increases, the current ________.

Answer 14

Decrease

Question 15

The neutral conductor shall not be ______.

Answer 15

Fused

Question 16

The voltage drop in a line can be decreased by ________.

Answer 16

.increasing the wire

.decreasing the load

Question 17

A three phase delta-wye connected transformer, 480 primary, 208/120 secondary,the secondary line circuit is _________.

Answer 17

Equal to the secondary phase current

Question 18

Insulating safety grips on tools________.

Answer 18

Should be used with other insulating equipment.

Question 19

The rating of any one portable appliance shall not exceed_____percent of the branch circuit rating.

Answer 19

50

Question 20

A generic term for a group of non-flammable synthetic chlorinated hydrocarbon used as electrical insulating media”.

Answer 20

Askarel

Question 21

The part of an electrical system that performs a mechanical function rather than electrical function is called a/an ______.

Answer 21

Fitting

Question 22

An electrical consider is best defined as _________.

Answer 22

A wrapping of many layers of metal foil set apart by waxed paper.

Question 23

Solid wire is preferred instead of stranded wire in panel wiring because___________.

Answer 23

Can be shaped better

Question 24

Which one of the following is not an insulator ?

Answer 24

Salt water

Question 25

The definition of accessible (wire):

Answer 25

Not permanently close in the building or structure

Question 26

The code is designed for safety regardless of ________.

Answer 26

.code
.time
.maintenance
.efficiency 
.future expansion

Question 27

When voltage and current appear at their zero and peak values at the same time, they are in_______.

Answer 27

Phase

Question 28

What is meant by traveller wires?

Answer 28

Two wires between 3-ways switches

Question 29

On a # 4 drill bit, the # 4 is determined by _____.

Answer 29

Size

Question 30

Wiring systems in wet locations should be_______.

Answer 30

Placed so a permanent air space separates them from the supporting surface

Question 31

The best type of fire extinguisher for an electrical fire is a ________.

Answer 31

Dry chemical extinguisher

Question 32

“Thermally protected”appearing on the nameplate of a motor indicates that the motor is provided with a _____.

Answer 32

Heat sensing element

Question 33

A capacitor is a device that _____enery.

Answer 33

Stores.

Question 34

When working near acid storage batteries, extreme care should be taken to guard against sparks, essentially to avoid_______.

Answer 34

An explosion

Question 35

Which of the following statements is incorrect ?

Answer 35

Rectifiers change DC to AC

Question 36

Which installing raceway systems it is essential that they be_______.

Answer 36

Rigidly supported as required