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

A transformer steps voltage up or down using electromagnetic induction between coils.

Question 2

Which material is the best conductor of electricity?

Accepted Answer

Copper

Answer

Copper is an excellent conductor due to its low electrical resistance and is widely used in wiring.

Question 3

Ground fault protection is designed to protect against:

Accepted Answer

Unintended current paths to ground that can cause shock

Answer

Ground fault protection detects unintended current paths to ground, preventing electrical shock and fire.

Question 4

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

Accepted Answer

Can be reset after tripping

Answer

Unlike a fuse that must be replaced after opening, a circuit breaker can be manually reset.

Question 5

What unit measures electrical resistance?

Accepted Answer

Ohm

Answer

Electrical resistance is measured in ohms (Ω), named after Georg Simon Ohm.

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