CFESA Refrigeration Certification
UPDATED ACTUAL Exam Questions and
CORRECT Answers
1. The function of the compressor is : - CORRECT ANSWER - B. to lower the pressure in
the evaporator so that the refrigerant temperature is lowered below the temperature of the air in
the box .
2 . Forced air evaporator coils are commonly used because : - CORRECT ANSWER - A.
they absorb more heat in less time .
3 . Evaporator A operates with a 5 ° TD and evaporator B operates with a 15⁰ TD . - CORRECT
ANSWER - D. Box A operates with higher humidity than box B
4 Whenever you re soldering refrigerant lines : - CORRECT ANSWER - D. B & C
5 . R404A must be charged into a system : - CORRECT ANSWER - A. In a liquid state
6 . If an evaporator fan motor needs to be replaced it must be replaced with : - CORRECT
ANSWER - C. Any motor with the exact HP , speed , voltage , mounting and rotation
7 . The fan blade on an evaporator or condenser must be positioned in the housing or shroud so
that : - CORRECT ANSWER - B. The blade is mounted mid way into the evaporator
housing opening or fan shroud opening on a condenser .
8. Which of the following refrigerants is an interim choice for a replacement for R - 12 in a
system that had a leak in the condenser and lost all of its refrigerant ? - CORRECT
ANSWER - C. R - 409A
9 . Which refrigerant is an interim refrigerant choice for a R502 system that had a major leak in
the evaporator - CORRECT ANSWER - d . R408A
, 10 . When evacuating a refrigeration system what tool is needed to ensure a good evacuation and
to help inform you if there is any moisture or leaks in the system : - CORRECT
ANSWER - B. Micron gauge
11 . Which refrigerant would you convert a walk in freezer to if replacing the condensing unit on
an R502 system : - CORRECT ANSWER - B. R404A
12 . Which phrase best describes the proper use for a refrigerated box using a cap tube system ? -
CORRECT ANSWER - A. Storage freezer
13 . Which is the best example of the definition of a storage box ? - CORRECT
ANSWER - A. A freezer on which the door is opened 8 times a day
14 . In order to maintain proper temperature under the various loads , a cooler or freezer located
on a front prep line must be equipped with : - CORRECT ANSWER - C. A thermal
expansion valve
15 . A cap tube is ineffective on most commercial refrigeration systems because : - CORRECT
ANSWER - D. it cannot respond to the refrigerant needs under heavy loads
16 . The sensor bulb on a TEV must be : - CORRECT ANSWER - C. mounted tight to a
clean surface on the suction line close to the outlet of the coil
17 . An automatic expansion valve does not : - CORRECT ANSWER - C. react well in
situations of heavy loads .
18 . For maximum efficiency the thermal expansion valve superheat for a freezer should be about
: - CORRECT ANSWER - A. 5 degrees
UPDATED ACTUAL Exam Questions and
CORRECT Answers
1. The function of the compressor is : - CORRECT ANSWER - B. to lower the pressure in
the evaporator so that the refrigerant temperature is lowered below the temperature of the air in
the box .
2 . Forced air evaporator coils are commonly used because : - CORRECT ANSWER - A.
they absorb more heat in less time .
3 . Evaporator A operates with a 5 ° TD and evaporator B operates with a 15⁰ TD . - CORRECT
ANSWER - D. Box A operates with higher humidity than box B
4 Whenever you re soldering refrigerant lines : - CORRECT ANSWER - D. B & C
5 . R404A must be charged into a system : - CORRECT ANSWER - A. In a liquid state
6 . If an evaporator fan motor needs to be replaced it must be replaced with : - CORRECT
ANSWER - C. Any motor with the exact HP , speed , voltage , mounting and rotation
7 . The fan blade on an evaporator or condenser must be positioned in the housing or shroud so
that : - CORRECT ANSWER - B. The blade is mounted mid way into the evaporator
housing opening or fan shroud opening on a condenser .
8. Which of the following refrigerants is an interim choice for a replacement for R - 12 in a
system that had a leak in the condenser and lost all of its refrigerant ? - CORRECT
ANSWER - C. R - 409A
9 . Which refrigerant is an interim refrigerant choice for a R502 system that had a major leak in
the evaporator - CORRECT ANSWER - d . R408A
, 10 . When evacuating a refrigeration system what tool is needed to ensure a good evacuation and
to help inform you if there is any moisture or leaks in the system : - CORRECT
ANSWER - B. Micron gauge
11 . Which refrigerant would you convert a walk in freezer to if replacing the condensing unit on
an R502 system : - CORRECT ANSWER - B. R404A
12 . Which phrase best describes the proper use for a refrigerated box using a cap tube system ? -
CORRECT ANSWER - A. Storage freezer
13 . Which is the best example of the definition of a storage box ? - CORRECT
ANSWER - A. A freezer on which the door is opened 8 times a day
14 . In order to maintain proper temperature under the various loads , a cooler or freezer located
on a front prep line must be equipped with : - CORRECT ANSWER - C. A thermal
expansion valve
15 . A cap tube is ineffective on most commercial refrigeration systems because : - CORRECT
ANSWER - D. it cannot respond to the refrigerant needs under heavy loads
16 . The sensor bulb on a TEV must be : - CORRECT ANSWER - C. mounted tight to a
clean surface on the suction line close to the outlet of the coil
17 . An automatic expansion valve does not : - CORRECT ANSWER - C. react well in
situations of heavy loads .
18 . For maximum efficiency the thermal expansion valve superheat for a freezer should be about
: - CORRECT ANSWER - A. 5 degrees
