Which of the following statements is true regarding distributors?
a. Distributors are more likely to fail than metering devices.
b. The pressure drop through a distributor is insignificant in the refrigerant circuit.
c. Distributors separate the liquid refrigerant from the vapor.
d. Many distributors have a replaceable orifice.
[Ques. 2] Evaporator cooling capacity is significantly affected by _____.
a. suction line pressure drop
b. the size of the equalizer line
c. the amount of surface area bathed in boiling liquid
d. being located below the level of the compressor
[Ques. 3] Which of the following statements about metering devices is true?
a. The ratio of liquid to vapor leaving the metering device is determined by the superheat.
b. Refrigerant that is deeply subcooled reduces the system cooling capacity.
c. Clogged condenser coils will reduce or prevent subcooling.
d. Vapor entering the evaporator absorbs the majority of the heat from the load.
[Ques. 4] In a DX system operating normally, the refrigerant leaving the evaporator should be _____.
a. all liquid
b. a liquid/vapor mixture
c. a superheated vapor
d. a subcooled liquid
[Ques. 5] The temperature in a furnace equipment room is 65F. Flue gas temperature is 375F. What is the net stack
temperature?
a. 65F
b. 310F
c. 375F
d. 440F
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