RSES Electrical Systems & Controls

Question 1

What is the function of a contactor in a refrigeration system?

Accepted Answer

Control high-voltage circuits

Answer

It acts as a switch to control high-voltage components.

Question 2

What is the purpose of a capacitor in a motor circuit?

Accepted Answer

Boost motor performance

Answer

To provide a starting or running boost for motors.

Question 3

Which device protects the system from electrical overload?

Accepted Answer

Fuse or breaker

Answer

A fuse or circuit breaker cuts off current when it exceeds safe limits.

Question 4

Why is grounding important in electrical systems?

Accepted Answer

Prevent electrical shocks

Answer

To ensure user safety and prevent electrical shocks.

Question 5

What is the role of a thermostat?

Accepted Answer

Regulates temperature

Answer

It senses temperature and controls the system accordingly.

(RSES) Refrigeration Service Engineers Society Certification Practice Test