Electrician Practice Tests

The disconnect switch Rating for motor loads is kept higher than motor conductor to permit the motor to start.

If a lamp resistance is 500 ohms and the ammeter near to the lamp indicates 5 mA. What is the power dissipated in he lamp?

The rating of feeder tap over current terminating device is 40 Amperes. Which of the following ampacity feeder tap can be used if the conductor length is less than 10 feet.?

The maximum recommended voltage drop in a branch circuit is …………………… percentage

What is the minimum size of 3 wire service for single dwelling with an initial load of 20 kVA or more.

Equipment grounded conductors are identified by ………….. color.

A Quick Recovery electric heater is rated at 4500 watts 240 volts. What rating of circuit breaker is required for protecting it?

A three phase 4 wire electrical system phase-phase voltage is 480 Volts. What is its phase to neutral voltage.

A single phase motor can be protected against overload short circuit and ground fault by a single over current device.

In an electrical circuit the fault current returns to the source power supply.

In a trade size of ¾ EMT, How many 14 AWG RHH conductors can be pulled in the raceway. The RHH conductors are cover less.

A 4 hp 230 V single phase motor has a service factor of 1.15 and name plate current rating of 25 A. What size dual element fuse can be used to protect the motor from overloads, short circuit and ground faults?

How many types of 4 wire feeders shall be permitted to utilize a common neutral?

How much maximum percentage of auxiliary gutters interior cross sectional area can be filled with conductors?

The fuses used for circuit protection shall be connected in ……………….