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refrigeration Questions with Answers (100%
Correct Answers)
Heat which is added to a vapor after the change of state occurs is called
Answer: superheat
A refrigerant gives up heat when; Answer: it vaporizes.
It is desirable for refrigerant in the suction line to be slightly superheated in
order to; Answer: insure liquid refrigerant does not enter the compressor.
The state of the refrigerant in the suction line should be; Answer: low pressure/
low temperature vapor
The state of the refrigerant entering the condenser is Answer: The state of the
refrigerant entering the condenser is
the evaporator; Answer: transfers heat from the refrigerated space to the
refrigerant.
Zero psig (pounds per square inch gauge) is Answer: the same as atmospheric
pressure.
approximately 14.7 psig at sea-level.
A compound pressure gauge measures; Answer: pressure and vacuum.
A mechanical shaft seal is necessary on a Answer: open drive compressor
The clearance space in a reciprocating compressor; Answer: has an effect on
compressor capacity.
A thermostatic expansion valve is designed to maintain Answer: constant
evaporator superheat
When mounting a thermostatic expansion valve sensor bulb Answer: the
contact surfaces must be clean.
refrigeration Questions with Answers (100%
Correct Answers)
Heat which is added to a vapor after the change of state occurs is called
Answer: superheat
A refrigerant gives up heat when; Answer: it vaporizes.
It is desirable for refrigerant in the suction line to be slightly superheated in
order to; Answer: insure liquid refrigerant does not enter the compressor.
The state of the refrigerant in the suction line should be; Answer: low pressure/
low temperature vapor
The state of the refrigerant entering the condenser is Answer: The state of the
refrigerant entering the condenser is
the evaporator; Answer: transfers heat from the refrigerated space to the
refrigerant.
Zero psig (pounds per square inch gauge) is Answer: the same as atmospheric
pressure.
approximately 14.7 psig at sea-level.
A compound pressure gauge measures; Answer: pressure and vacuum.
A mechanical shaft seal is necessary on a Answer: open drive compressor
The clearance space in a reciprocating compressor; Answer: has an effect on
compressor capacity.
A thermostatic expansion valve is designed to maintain Answer: constant
evaporator superheat
When mounting a thermostatic expansion valve sensor bulb Answer: the
contact surfaces must be clean.
