LEVEL 4 CHAPTER 9
COMMERCIAL/INDUSTRIAL
REFRIGERATION EXAM 100%
CORRECT
In the freezing process, when is the sensible heat removed from the product being
frozen? - ANSWERSBefore and after the latent heat of fusion is removed
A fluid commonly used in cryogenic freezing is liquid - ANSWERSNitrogen
One advantage blast freezing offers over some other forms of freezing is -
ANSWERSThe ability to freeze foods of irregular size and shape
An optional process used in mobile refrigeration systems to minimize ripening of
produce to extend its shelf life is - ANSWERSControlled Atmosphere (CA)
The programmed staging of different sized compressors connected in parallel will result
in - ANSWERSMore steps of capacity than if using equally sized compressors
Anhydrous ammonia is also known as refrigerant - ANSWERSR-717
Which of the following statements regarding evaporator pressure regulators (EPR) is
true? - ANSWERSAn EPR is installed between the evaporator and compressor
The crankcase pressure regulating valve is - ANSWERSused to control the maximum
pressure at the compressor suction line in order to protect the compressor motor from
overload
In fixtures that maintain temperatures at or above 36f, the coil/saturated suction
temperature is dependent on the - ANSWERSDesired humidity levels
Using electric defrost, the heater must be in good thermal contact with the -
ANSWERSevaporator coil fins
A satellite compressor - ANSWERSIs a separate compressor that uses the same
refrigerant source as that used by a related group of parallel compressors
An accessory used to evaporate refrigerant from oil is the - ANSWERSCrankcase
Heater
Hot-gas defrost sends discharge gas from the compressor directly to the -
ANSWERSevaporator
COMMERCIAL/INDUSTRIAL
REFRIGERATION EXAM 100%
CORRECT
In the freezing process, when is the sensible heat removed from the product being
frozen? - ANSWERSBefore and after the latent heat of fusion is removed
A fluid commonly used in cryogenic freezing is liquid - ANSWERSNitrogen
One advantage blast freezing offers over some other forms of freezing is -
ANSWERSThe ability to freeze foods of irregular size and shape
An optional process used in mobile refrigeration systems to minimize ripening of
produce to extend its shelf life is - ANSWERSControlled Atmosphere (CA)
The programmed staging of different sized compressors connected in parallel will result
in - ANSWERSMore steps of capacity than if using equally sized compressors
Anhydrous ammonia is also known as refrigerant - ANSWERSR-717
Which of the following statements regarding evaporator pressure regulators (EPR) is
true? - ANSWERSAn EPR is installed between the evaporator and compressor
The crankcase pressure regulating valve is - ANSWERSused to control the maximum
pressure at the compressor suction line in order to protect the compressor motor from
overload
In fixtures that maintain temperatures at or above 36f, the coil/saturated suction
temperature is dependent on the - ANSWERSDesired humidity levels
Using electric defrost, the heater must be in good thermal contact with the -
ANSWERSevaporator coil fins
A satellite compressor - ANSWERSIs a separate compressor that uses the same
refrigerant source as that used by a related group of parallel compressors
An accessory used to evaporate refrigerant from oil is the - ANSWERSCrankcase
Heater
Hot-gas defrost sends discharge gas from the compressor directly to the -
ANSWERSevaporator
