CPE Electrical Systems & Controls

Question 1

What is the function of a circuit breaker?

Accepted Answer

To protect circuits from overload

Answer

To increase voltage

Answer

To store electricity

Answer

To convert AC to DC

Question 2

What device controls the speed of an electric motor?

Accepted Answer

Variable frequency drive

Answer

Transformer

Answer

Capacitor

Answer

Relay

Question 3

What is the purpose of grounding in electrical systems?

Accepted Answer

Provide safe path for current

Answer

Increase voltage

Answer

Store electricity

Answer

Convert AC to DC

Question 4

What component stores electrical energy in a circuit?

Accepted Answer

Capacitor

Answer

Resistor

Answer

Inductor

Answer

Transformer

Question 5

Which device interrupts current flow when it detects a ground fault?

Accepted Answer

Ground Fault Circuit Interrupter (GFCI)

Answer

Circuit breaker

Answer

Transformer

Answer

Relay

Question 6

What is an electrical relay used for?

Accepted Answer

Control circuit with another circuit

Answer

Increase current

Answer

Store electricity

Answer

Reduce voltage

Question 7

What does an electrical transformer do?

Accepted Answer

Changes voltage levels

Answer

Stores energy

Answer

Measures current

Answer

Generates electricity

Question 8

What is a common cause of electrical system failures?

Accepted Answer

Overloading circuits

Answer

Proper maintenance

Answer

Using correct wiring

Answer

Routine inspections

Question 9

Why is regular inspection important for electrical controls?

Accepted Answer

Identify issues and prevent failures

Answer

Ignore problems

Answer

Increase faults

Answer

Delay maintenance