Aux 2 Unit 9 Quiz 1

Correct Answer:
C) Adding too much refrigerant during maintenance

Explanation:
Overcharging often occurs when an excessive amount of refrigerant is added during maintenance, resulting in too much liquid refrigerant in the system.

Correct Answer:
B) Low refrigerant temperature and reduced cooling capacity

Explanation:
An undercharged system has insufficient refrigerant, leading to lower temperature in the evaporator and reduced overall cooling capacity due to inadequate heat absorption.

Correct Answer:
C) Refrigerant leakage in the system

Explanation:
A common cause of undercharge is a refrigerant leak, which results in a reduced amount of refrigerant circulating in the system and diminished performance.

Correct Answer:
B) The system stops and starts frequently without completing normal cycles

Explanation:
Short cycling refers to the frequent starting and stopping of the compressor, which prevents the system from completing its full refrigeration cycle, leading to reduced efficiency and potential wear.

Correct Answer:
C) Faulty pressure control or defective thermostat

Explanation:
Short cycling can occur due to faulty pressure controls or a malfunctioning thermostat that inaccurately signals the compressor to stop and start more frequently than needed.

Correct Answer:
B) Reduced heat transfer in the condenser due to liquid flooding

Explanation:
An overcharged system may have too much refrigerant, leading to liquid refrigerant flooding the condenser and reducing the heat transfer efficiency.

Correct Answer:
C) Reduced efficiency and potential compressor damage

Explanation:
Short cycling can lead to increased wear on the compressor, higher energy consumption, and reduced system efficiency due to the frequent starts and stops.