EIAT and NEIEP Test FREE NEIEP Electrical Theory Questions and Answers 2

Question 1

What is the standard frequency of AC power in the United States?

Accepted Answer

60 Hz

Answer

50 Hz

Answer

120 Hz

Answer

400 Hz

Question 2

What does a transformer do in an electrical system?

Accepted Answer

Changes AC voltage from one level to another

Answer

Converts AC to DC

Answer

Stores electrical energy

Answer

Measures electrical current

Question 3

Which wire color is used for the neutral conductor in standard US residential wiring?

Accepted Answer

White

Answer

Black

Answer

Green

Answer

Red

Question 4

What does a fuse do in an electrical circuit?

Accepted Answer

Interrupts the circuit if current exceeds a safe level

Answer

Boosts the voltage in the circuit

Answer

Reduces resistance in the circuit

Answer

Converts electrical energy to light

Question 5

What is the difference between AC and DC current?

Accepted Answer

AC periodically reverses direction; DC flows in one direction only

Answer

AC flows in one direction; DC reverses direction

Answer

AC is used in batteries; DC is used in outlets

Answer

AC has no voltage; DC has constant voltage

Question 6

What is a ground fault?

Accepted Answer

An unintended connection between an energized conductor and ground

Answer

A broken ground wire

Answer

Excess voltage in a circuit

Answer

A short circuit between two hot wires