EIAT and NEIEP Test Electrical Theory 3

Question 1

What is the effect of increasing temperature on most conductors?

Accepted Answer

Resistance increases

Answer

Resistance decreases

Answer

Resistance stays the same

Answer

Conductance increases

Question 2

A transformer is used to:

Accepted Answer

Step voltage up or down

Answer

Convert DC to AC

Answer

Store electrical energy

Answer

Measure current

Question 3

What is a diode's primary function in a circuit?

Accepted Answer

Allow current to flow in one direction only

Answer

Amplify current

Answer

Store charge

Answer

Regulate voltage

Question 4

The term 'ground' in an electrical circuit refers to:

Accepted Answer

A reference point at zero potential

Answer

The highest voltage point

Answer

The neutral wire only

Answer

The phase conductor

Question 5

Three-phase power is most commonly used in:

Accepted Answer

Industrial motors and machinery

Answer

Residential lighting

Answer

Household appliances

Answer

Phone chargers

Question 6

What instrument measures electrical resistance?

Accepted Answer

Ohmmeter

Answer

Ammeter

Answer

Voltmeter

Answer

Wattmeter