Aux 2 Unit 8 Quiz 2

Correct Answer:
B) Heat flows from hot to cold when there is a temperature difference

Explanation:
One of the basic principles of refrigeration is that heat flows naturally from a higher temperature to a lower temperature, which is utilized to transfer heat out of a space that needs to be cooled.

Correct Answer:
C) Compression increases the pressure and temperature of the gas

Explanation:
When a refrigerant gas is compressed, its pressure and temperature increase, preparing it to release heat when it enters the condenser.

Correct Answer:
B) On the discharge line of the compressor

Explanation:
The high pressure cut-out is located on the discharge line of the compressor to monitor and prevent excessive pressure that could damage the system.

Correct Answer:
B) Evaporation absorbs heat, causing a cooling effect

Explanation:
When a liquid refrigerant evaporates, it absorbs heat from its surroundings, creating a cooling effect. This principle is fundamental in the operation of refrigeration systems.

Correct Answer:
C) Near the suction side of the compressor

Explanation:
The low pressure cut-out is typically located on the suction side of the compressor to monitor the pressure of the refrigerant and prevent damage from excessively low suction pressures.

Correct Answer:
B) It must be manually reset using a button or switch on the control panel

Explanation:
High pressure cut-outs often require manual resetting through a button or switch to ensure that the operator is aware of the pressure fault and takes corrective action.

Correct Answer:
A) By manually pressing a reset button

Explanation:
The low pressure cut-out usually needs to be reset manually to ensure that the operator is aware of a potential issue and can take appropriate measures to address it.