NJ BLUE SEAL REFRIGERATION
PROFESSIONAL LICENSE PREPARATION
TEST PAPER 2026 FULL QUESTIONS WITH
VERIFIED DETAILED SOLUTIONS EXPERT
REVIEWED COMPLETE STUDY GUIDE
RESOURCE
⩥ If a system were using an automatic expansion valve, what would the
constant pressure be maintained at? Answer: The evaporator
⩥ What is the main advantage of a cascade refrigeration system?
Answer: Capable of reaching very low temperature
⩥ Choose the statement below, which would prove false about lithium
bromide used in absorption system. Answer: It is non-corrosive
⩥ What is a sling psychrometer device used to measure? Answer:
Relative humidity
⩥ A system using an evaporative condenser operates most efficiently
under what conditions? Answer: When the wet-bulb temperature of air is
low
,⩥ The discharge gas from the compressor is what, in a wet-compression
refrigeration system? Answer: Saturated
⩥ If a refrigeration system were over charged with refrigerant, what
conditions would occur? Answer: Decrease in capacity and increase in
head pressure
⩥ If a cooling tower circulated 4,300 GPM of water, what is the cooling
capacity in tons? Answer: 1,433 tons
⩥ What condition would cause a system to not respond to an expansion
valve adjustment? Answer: Oil in the evaporator
⩥ In an absorption system, the generator receives what medium?
Answer: Strong liquor
⩥ Which would have the lease effect on the capacity of a water-cooled
condenser? Answer: The ambient air temperature
⩥ What is the volume occupied by a refrigerant under specified
conditions of pressure and temperature? Answer: Specific volume
⩥ What should a cooling tower water pH be maintained at? Answer: 8
,⩥ The absolute Celsius scale is referred to by which temperature scale?
Answer: Kelvin
⩥ Which devices control the high side float? Answer: Condenser and
receiver
⩥ In Fahrenheit, what is the equivalent of -15 degrees Celsius? Answer:
5 degrees F
⩥ If you had a flooded evaporator, which type of metering device would
you use? Answer: Low side float
⩥ Choose the formula used to determine the number of cycles of
concentration for a cooling tower? Answer: Cycles = Tower water
chlorides / Makeup water chlorides
⩥ What determines the low side pressure in a refrigeration system?
Answer: The amount if load on the system
⩥ Which seal is not used on a refrigeration system? Answer: Mechanical
⩥ Which water chemistry test is used to determine cooling tower cycles
of concentration? Answer: Chlorides
, ⩥ Why is a rheostat used on a synchronous motor? Answer: To vary the
power factor to the load conditions
⩥ What would happen if you had a sudden drop in the temperature in the
cooling tower of a lithium bromide absorption system? Answer:
Crystallization in the system
⩥ What is the function of a heat exchanger in an absorption system?
Answer: Allows the weak liquor to heat the strong liquor
⩥ Define the term "refrigerant reclaiming" Answer: Selling reprocessed
refrigerant as "reclaimed refrigerant" ; Reprocessing the refrigerant into
a new product that can be reused ; Chemically analyzing and distilling
the refrigerant ; All of the above
⩥ Which phrase best describes the term "free air"? Answer: Air at
atmospheric conditions
⩥ How is the setting on a thermostatic expansion valve rated? Answer:
Degrees of superheat
⩥ Which statement describes the operation of a single acting
compressor? Answer: The refrigeration gas is compressed on only one
side of the piston
PROFESSIONAL LICENSE PREPARATION
TEST PAPER 2026 FULL QUESTIONS WITH
VERIFIED DETAILED SOLUTIONS EXPERT
REVIEWED COMPLETE STUDY GUIDE
RESOURCE
⩥ If a system were using an automatic expansion valve, what would the
constant pressure be maintained at? Answer: The evaporator
⩥ What is the main advantage of a cascade refrigeration system?
Answer: Capable of reaching very low temperature
⩥ Choose the statement below, which would prove false about lithium
bromide used in absorption system. Answer: It is non-corrosive
⩥ What is a sling psychrometer device used to measure? Answer:
Relative humidity
⩥ A system using an evaporative condenser operates most efficiently
under what conditions? Answer: When the wet-bulb temperature of air is
low
,⩥ The discharge gas from the compressor is what, in a wet-compression
refrigeration system? Answer: Saturated
⩥ If a refrigeration system were over charged with refrigerant, what
conditions would occur? Answer: Decrease in capacity and increase in
head pressure
⩥ If a cooling tower circulated 4,300 GPM of water, what is the cooling
capacity in tons? Answer: 1,433 tons
⩥ What condition would cause a system to not respond to an expansion
valve adjustment? Answer: Oil in the evaporator
⩥ In an absorption system, the generator receives what medium?
Answer: Strong liquor
⩥ Which would have the lease effect on the capacity of a water-cooled
condenser? Answer: The ambient air temperature
⩥ What is the volume occupied by a refrigerant under specified
conditions of pressure and temperature? Answer: Specific volume
⩥ What should a cooling tower water pH be maintained at? Answer: 8
,⩥ The absolute Celsius scale is referred to by which temperature scale?
Answer: Kelvin
⩥ Which devices control the high side float? Answer: Condenser and
receiver
⩥ In Fahrenheit, what is the equivalent of -15 degrees Celsius? Answer:
5 degrees F
⩥ If you had a flooded evaporator, which type of metering device would
you use? Answer: Low side float
⩥ Choose the formula used to determine the number of cycles of
concentration for a cooling tower? Answer: Cycles = Tower water
chlorides / Makeup water chlorides
⩥ What determines the low side pressure in a refrigeration system?
Answer: The amount if load on the system
⩥ Which seal is not used on a refrigeration system? Answer: Mechanical
⩥ Which water chemistry test is used to determine cooling tower cycles
of concentration? Answer: Chlorides
, ⩥ Why is a rheostat used on a synchronous motor? Answer: To vary the
power factor to the load conditions
⩥ What would happen if you had a sudden drop in the temperature in the
cooling tower of a lithium bromide absorption system? Answer:
Crystallization in the system
⩥ What is the function of a heat exchanger in an absorption system?
Answer: Allows the weak liquor to heat the strong liquor
⩥ Define the term "refrigerant reclaiming" Answer: Selling reprocessed
refrigerant as "reclaimed refrigerant" ; Reprocessing the refrigerant into
a new product that can be reused ; Chemically analyzing and distilling
the refrigerant ; All of the above
⩥ Which phrase best describes the term "free air"? Answer: Air at
atmospheric conditions
⩥ How is the setting on a thermostatic expansion valve rated? Answer:
Degrees of superheat
⩥ Which statement describes the operation of a single acting
compressor? Answer: The refrigeration gas is compressed on only one
side of the piston
