Review

1. What is used in both service and branch circuit is made of one or more strands of metal, either copper or aluminum and covered with a flexible plastic insulation?

• A. Circuit breakers

• B. Fuse

• C. Switchboard

• D. Wire

 

2. What device transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing or reducing the voltage?

• A. Circuit breakers

• B. Switchboards

• C. Transformers

• D. Wire

3. Which component of an electrical distribution system divides an electrical power feed into branch circuits while providing a protective circuit breaker or fuse for each circuit in a common enclosure?

• A. Circuit breakers

• B. Switchboards

• C. Transformers

• D. Wire

4. What is made of thin strips of metal used for safety because when the current flowing through it becomes too high, it melts and breaks the flow of electricity?

• A. Circuit breakers

• B. Fuse

• C. Switchboards

• D. Wire

 5. What is an electromechanical device which performs the same protective function as a fuse and acts as a switch and it is also reusable device that protects a circuit from becoming overloaded?

• A. Circuit breakers

• B. Fuse

• C. Switchboards

• D. Wire