Aux 2 Unit 9 Quiz 2

Aux 2 Unit 9 Q2

1 / 6

Which of the following is a common reason for a refrigeration compressor to stop unexpectedly after running for a short period?

C) High pressure trip due to condenser blockage

D) Proper operation of the expansion valve

B) Low ambient temperature

A) High refrigerant charge

2 / 6

What fault could result in a low pressure cut-out stopping the compressor?

C) Overactive expansion valve

D) High ambient temperature

A) Excessive refrigerant in the system

B) Leaking refrigerant or undercharge

3 / 6

Which of the following could cause a refrigeration compressor to stop unexpectedly after running briefly?

A) Faulty evaporator fan motor

D) High voltage input

B) Low refrigerant pressure triggering the low pressure cut-out

C) Excessive air circulation in the evaporator

4 / 6

What fault could lead to a high pressure trip and stoppage of a refrigeration compressor?

C) Faulty evaporator fan

A) Low refrigerant charge

D) Low voltage supply

B) Clogged condenser or poor heat dissipation

5 / 6

Which of the following can result in the unexpected stoppage of a refrigeration compressor?

D) Proper operation of the defrost timer

B) Malfunctioning thermostat or pressure switch

A) Low humidity in the cooling space

C) Excessive cooling demand

6 / 6

What could lead to a refrigeration compressor stopping unexpectedly due to electrical issues?

D) Correct power supply

C) Faulty motor starter or electrical relay

B) High refrigerant level

A) Proper wiring connections

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