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Flashcards in PEC BOARD 2016 Deck (24):
1

What is the lowest dielectric strength of transformer oil which is acceptable to PEC? (V)

25,000 volts

2

is the connection of between conductive or inductive metal object in an element of lightning protection sytem to accomplish electrical continuity.

Bonding

3

Soft iron is most suitable for use in a _________

temporary magnet.

4

As the power factor of the circuit is increased reactive power is ______.

decreased

5

An electrical outlet is constructed so that moisture will not enter the enclosure is classified as _______.

watertight

6

6. A ________ is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine measured in revolution per minute.

Tachometer

7

If the circuit voltage is increased, all else remains the same only the _____ will change.

current

8

____ has a negative temperature coefficient of resistance.

Carbon

9

______ conductors shall be used for wiring on fixture chain.

Stranded

10

Solenoids are made of ______

electromagnets.

11

Basically, all electric motors operate on the principle of ______ or _____.

repulsion
induction

12

To fasten a box to a tera cotta wall, you would use, ______(2)

rawl plugs or toggle bolts.

13

The total opposition of to current flow in DC is expressed in ohms is _______

resistance.

14

Two 500 watt lamps connected in series across a 120V source draws 3A, the total wattage consumed is _____w.

360W

15

You have an adjustable trip coil rated at 5A on a 200A switch. If you want the switch to trip at 120A, the trip coil should be set to ___A

3A.

16

Three horsepowers is equivalent to ______W.

2238 watts

17

Electrical appliances are connected in parallel because it ______________________

makes the operation of appliances independent to each other.

18

A ________ is one or more rooms used as a housekeeping unit & having permanent cooking & sanitation provision.

dwelling unit

19

________ has the highest electrical resistance among water, iron and brass.

Paper

20

When accidentally splashing a chemical into the eyes the best immediate first aid solution is to ______________

flush eyes with clean water.

21

The efficiency of a motor is measure of how well: _______________________

it converts electrical energy into mechanical energy.

22

A good magnetic material is ____ among aluminum, brass and copper.

iron

23

An ________ is the smallest part of an atom with negative charge

electron

24

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