Pastboard Pec

Question 0

In order to protect a personnel and prevent shock, the equipment should be connected good earth ground through the ___.

Answer 0

Cold water pipe

Question 1

The requires that all energized part of electrical equipment operating at ______ or more shall be guarded against accidental contacts by approved enclosures what is this voltage?

Answer 1

50 volts

Question 2

If the interrupting rating of a circuit breaker is lower than required, what will happen to the breaker if there is a dead short between two down stream breaker terminals?

Answer 2

the entire breaker will be completely damaged

Question 3

The ______, or other descriptive marking by which the organization responsible for the product maybe identified, shall be placed on all electric equipment.

Answer 3

Trademark , manufacturer’s name

Question 4

Conductors of AC and DC rated up to 600 V nominal shall be permitted to occupy the same equipment wiring enclosure, cable tray or raceway. Is this being allowed under Sec 5.1.1.3 (c) (1) art 5.1 ?

Answer 4

True

Question 5

Consist of a group of wire twisted to form a metallic string.

Answer 5

Stranded wire

Question 6

If an electrician does not understand that we’re given by the supervisor, which Of the following is best for him to do ?

Answer 6

He asks to repeat and clarify the instruction

Question 7

The inner strand of ACSR is made of

Answer 7

steel

Question 8

A small lamp used to indicate that a circuit is energized.

Answer 8

Pilot light

Question 9

A battery is charged at 15A for 10hour. If the charging voltage is 120 V what is the charging cost at 1.00 peso per KW-hr?

Answer 9

18 pesos

Question 10

The unit of magnetic flux in SI.

Answer 10

Weber

Question 11

A lubricant to make pulling of wires or cables through the conduit easier

Answer 11

Talc

Question 12

Give an example of the an electrical conductor

Answer 12

Brass

Question 13

If 18 resistance, each of a value of 36 ohms, are connected in parallel, then the total resistance is ______.

Answer 13

2 ohms

Question 14

A 25 w incandescent bulb rated at 120 V line has burnt out and has to be replaced as soon as possible. There are several lamps available but not of the same rating. Which of the bulbs below the power consumption of the busted bulb?

Answer 14

100watts, 240 volts

Question 15

Which of the following breaks down rubber insulator?

Answer 15

Acid

Question 16

The current carrying capacity of the fuse material depends on

Answer 16

All of these

Question 17

A resistor of 3 ohms is connected in parallel with one of 2 ohm resistance. If the combination is connected in series with a 4 ohm resistor, what is the equivalent resistance of the whole combination of three resistors?

Answer 17

5.2

Question 18

In a circuit breaker, the current which exists at the instant of contact separation is known as

Answer 18

Interrupting current

Question 19

What resistance must be connected in parallel with a 1.0 ohm resistance to give an equivalent resistance of 0.2 ohm?

Answer 19

0.25

Question 20

For a ceiling fan, which of the single phase motor is used?

Answer 20

Capacitor start and run type.