PEC BOARD 2016

Question 1

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

Answer 1

25,000 volts

Question 2

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

Answer 2

Bonding

Question 3

Soft iron is most suitable for use in a _________

Answer 3

temporary magnet.

Question 4

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

Answer 4

decreased

Question 5

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

Answer 5

watertight

Question 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.

Answer 6

Tachometer

Question 7

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

Answer 7

current

Question 8

____ has a negative temperature coefficient of resistance.

Answer 8

Carbon

Question 9

______ conductors shall be used for wiring on fixture chain.

Answer 9

Stranded

Question 10

Solenoids are made of ______

Answer 10

electromagnets.

Question 11

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

Answer 11

repulsion

induction

Question 12

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

Answer 12

rawl plugs or toggle bolts.

Question 13

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

Answer 13

resistance.

Question 14

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

Answer 14

360W

Question 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

Answer 15

3A.

Question 16

Three horsepowers is equivalent to ______W.

Answer 16

2238 watts

Question 17

Electrical appliances are connected in parallel because it ______________________

Answer 17

makes the operation of appliances independent to each other.

Question 18

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

Answer 18

dwelling unit

Question 19

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

Answer 19

Paper

Question 20

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

Answer 20

flush eyes with clean water.

Question 21

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

Answer 21

it converts electrical energy into mechanical energy.

Question 22

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

Answer 22

iron

Question 23

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

Answer 23

electron

Question 24

.

Answer 24

.