CFESA REFRIGERATION CERTIFICATION 7 2026
EXAM SCRIPT TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
◉ Tube within a tube, shell and coil, and shell and tube are all types
of:
A. water cooled condensers.
B. air cooled condensers.
C. receivers.
D. accumulators.
Answer: A. water cooled condensers.
◉ The refrigerant condensing temperature in a water cooled
condenser is normally about ____ higher than the leaving water.
A. 100°F
B. 10°F
C. 30°F
D. 75°F.
Answer: B. 10°F
,◉ The refrigerant in an air cooled condenser will normally condense
at approximately _____ higher temperature than the air passing over
it.
A. 10°F
B. 30°F
C. 75°F
D. 100°F.
Answer: B. 30°F
◉ Workable head pressure during periods of low ambient
temperature can be achieved by using:
A. an economizer
B. evaporator dampers
C. evaporator flooding
D. fan-cycle control.
Answer: D. fan-cycle control
◉ Cooling towers that pass air over water to remove system heat are
limited in capacity by:
A. outside air wet bulb temperature.
B. outside air dry bulb temperature
C. inside air wet bulb temperature.
D. inside air dry bulb temperature..
,Answer: A. outside air wet bulb temperature.
◉ One of the main reasons that reciprocating compressors are not
100% efficient is:
A. CFC refrigerants.
B. clearance volume.
C. evaporator design
D. condenser design..
Answer: B. clearance volume.
◉ An open drive compressor is most likely to develop a refrigerant
leak at the:
A. valve plate.
B. suction service valve.
C. discharge service valve.
D. shaft seal..
Answer: D. shaft seal.
◉ Multiple compressors provide:
A. positive on return.
B. lower humidity in high humidity locales.
C. capacity control
, D. zone control..
Answer: C. capacity control
◉ A dirty evaporator and subsequent low evaporator pressures will
cause:
A. high compression ratios.
B. low compression ratios.
C. high head pressure
D. high suction pressure..
Answer: B. low compression ratios.
◉ The thermostatic expansion valve (TEV) maintains a constant
_____ in the evaporator.
A. temperature
B. pressure
C. liquid level
D. superheat.
Answer: D. superheat
◉ The automatic expansion valve (AEV) maintains a constant _____ in
the evaporator.
A. temperature
EXAM SCRIPT TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
◉ Tube within a tube, shell and coil, and shell and tube are all types
of:
A. water cooled condensers.
B. air cooled condensers.
C. receivers.
D. accumulators.
Answer: A. water cooled condensers.
◉ The refrigerant condensing temperature in a water cooled
condenser is normally about ____ higher than the leaving water.
A. 100°F
B. 10°F
C. 30°F
D. 75°F.
Answer: B. 10°F
,◉ The refrigerant in an air cooled condenser will normally condense
at approximately _____ higher temperature than the air passing over
it.
A. 10°F
B. 30°F
C. 75°F
D. 100°F.
Answer: B. 30°F
◉ Workable head pressure during periods of low ambient
temperature can be achieved by using:
A. an economizer
B. evaporator dampers
C. evaporator flooding
D. fan-cycle control.
Answer: D. fan-cycle control
◉ Cooling towers that pass air over water to remove system heat are
limited in capacity by:
A. outside air wet bulb temperature.
B. outside air dry bulb temperature
C. inside air wet bulb temperature.
D. inside air dry bulb temperature..
,Answer: A. outside air wet bulb temperature.
◉ One of the main reasons that reciprocating compressors are not
100% efficient is:
A. CFC refrigerants.
B. clearance volume.
C. evaporator design
D. condenser design..
Answer: B. clearance volume.
◉ An open drive compressor is most likely to develop a refrigerant
leak at the:
A. valve plate.
B. suction service valve.
C. discharge service valve.
D. shaft seal..
Answer: D. shaft seal.
◉ Multiple compressors provide:
A. positive on return.
B. lower humidity in high humidity locales.
C. capacity control
, D. zone control..
Answer: C. capacity control
◉ A dirty evaporator and subsequent low evaporator pressures will
cause:
A. high compression ratios.
B. low compression ratios.
C. high head pressure
D. high suction pressure..
Answer: B. low compression ratios.
◉ The thermostatic expansion valve (TEV) maintains a constant
_____ in the evaporator.
A. temperature
B. pressure
C. liquid level
D. superheat.
Answer: D. superheat
◉ The automatic expansion valve (AEV) maintains a constant _____ in
the evaporator.
A. temperature
