EEI TECH EEI Tech Electrical Concepts 2

Question 1

What is the function of a transformer in an electrical system?

Accepted Answer

Change voltage levels

Answer

Store electricity

Answer

Convert DC to AC

Answer

Measure current

Question 2

Which material is the best conductor of electricity?

Accepted Answer

Copper

Answer

Rubber

Answer

Wood

Answer

Glass

Question 3

Ground fault protection is designed to protect against:

Accepted Answer

Unintended current paths to ground that can cause shock

Answer

Overvoltage

Answer

Low power factor

Answer

Frequency fluctuations

Question 4

A circuit breaker differs from a fuse in that a circuit breaker:

Accepted Answer

Can be reset after tripping

Answer

Cannot be reset

Answer

Only works on DC circuits

Answer

Has no overcurrent rating

Question 5

What unit measures electrical resistance?

Accepted Answer

Ohm

Answer

Volt

Answer

Ampere

Answer

Watt

Question 6

In the formula P = V × I, what does 'P' represent?

Accepted Answer

Power in watts

Answer

Pressure

Answer

Potential difference

Answer

Phase angle