What is the effect of an increase in the cooling load on a TXV?
a. The superheat decreases, causing the TXV to feed more refrigerant.
b. The superheat decreases, causing the TXV to reduce the flow of refrigerant.
c. The superheat rises, causing the TXV to feed more refrigerant.
d. The superheat rises, causing the TXV to reduce the flow of refrigerant.
[Ques. 2] How does an automatic expansion valve prevent liquid floodback in a system?
a. It is not capable of preventing floodback.
b. Keeping the evaporator pressure low prevents floodback.
c. Keeping the evaporator temperature low prevents floodback.
d. Keeping the evaporator pressure high prevents floodback.
[Ques. 3] A manual expansion valve can be identified by _____.
a. the absence of a handle
b. an orange handle
c. a bright red handle
d. a yellow handle
[Ques. 4] In a comfort cooling system with a fixed metering device, as the heat load is reduced, the superheat will
_____.
a. decrease
b. increase
c. remain the same
d. change unpredictably
[Ques. 5] If a capillary tube is restricted due to a sharp bend, the _____.
a. evaporator will be fed too much refrigerant
b. evaporator will be starved of refrigerant
c. condenser will be fed too much refrigerant
d. condenser will be starved of refrigerant
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