RSES Electrical Systems & Controls

Question 1

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

Accepted Answer

Control high-voltage circuits

Answer

Measure humidity

Answer

Transfer refrigerant

Answer

Filter air

Question 2

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

Accepted Answer

Boost motor performance

Answer

Heat the coil

Answer

Increase noise

Answer

Dim the lights

Question 3

Which device protects the system from electrical overload?

Accepted Answer

Fuse or breaker

Answer

Thermostat

Answer

Pressure switch

Answer

Relay

Question 4

Why is grounding important in electrical systems?

Accepted Answer

Prevent electrical shocks

Answer

Reduce noise

Answer

Change voltage

Answer

Improve cooling

Question 5

What is the role of a thermostat?

Accepted Answer

Regulates temperature

Answer

Moves air

Answer

Adds moisture

Answer

Closes ducts

Question 6

How is a relay used in a control system?

Accepted Answer

Switches circuits

Answer

Cools the refrigerant

Answer

Heats the air

Answer

Regulates pressure

Question 7

Why use color-coded wiring?

Accepted Answer

To maintain safety and standards

Answer

For decoration

Answer

To confuse others

Answer

To mark insulation type

Question 8

What tool measures voltage and current?

Accepted Answer

Multimeter

Answer

Wrench

Answer

Thermometer

Answer

Caliper

Question 9

Why must circuit diagrams be followed?

Accepted Answer

Ensure proper wiring

Answer

To draw pictures

Answer

To replace fuses

Answer

Label refrigerant