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NJ Refrigeration Blue Seal 2-C Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
Name the 4 steps of a mechanical refrigeration system - Answer✔evaporation, expansion,
compression, & condensation
Name the 4 parts of a refrigeration system - Answer✔compressor, condenser, receiver, &
evaporator
Name the 3 methods of heat transfer - Answer✔conduction, convection, & radiation
What type of heat increases temp, but the state remains the same? - Answer✔sensible heat
600,000 BTU/HR = ____ tons of refrigeration? - Answer✔50
How many tons of refrigerant is req'd to prevent 2,000 lbs of ice from melting in 24 hrs? -
Answer✔1 ton
What is the heat of ammonia at 5°F? - Answer✔565 BTUs
What is the pressure of 5°F of ammonia? - Answer✔19.6 psig
1
, ©BRIGHTSTARS 2025 ALL RIGHTS RESERVED 9:46 AM A+
What are expansion valves rated in? - Answer✔Tons
What is an indication your expansion valve is leaking? - Answer✔It would frost up
What formula is used to determine tower water cycles? - Answer✔Tower water chlorides /
make up water chlorides
What will cause high head pressure? - Answer✔A dirty condenser / air
How many lbs of refrigerant can be stored in a cylinder with a 125 lb capacity? - Answer✔100
lbs
What 2 values are needed to calculate the amount of refrigeration req'd? - Answer✔BTUs to be
removed & the time req'd to compress the refrigerant
Which seal would not be used on a compressor? - Answer✔Mechanical seal
Where is the booster compressor of a 2-stage refrigeration system is located? -
Answer✔Between the evaporator & the intercooler
Which chemistry is used to determine tower water cycles? - Answer✔chlorides
Where is the location of a sub-cooler or pre-cooler? - Answer✔Before the expansion valve
What is the formula for Boyle's Law? - Answer✔P1 x V1 = P2 x V2
In a shell and tube heat exchanger, where is the refrigerant located? - Answer✔Shell side
2
NJ Refrigeration Blue Seal 2-C Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
Name the 4 steps of a mechanical refrigeration system - Answer✔evaporation, expansion,
compression, & condensation
Name the 4 parts of a refrigeration system - Answer✔compressor, condenser, receiver, &
evaporator
Name the 3 methods of heat transfer - Answer✔conduction, convection, & radiation
What type of heat increases temp, but the state remains the same? - Answer✔sensible heat
600,000 BTU/HR = ____ tons of refrigeration? - Answer✔50
How many tons of refrigerant is req'd to prevent 2,000 lbs of ice from melting in 24 hrs? -
Answer✔1 ton
What is the heat of ammonia at 5°F? - Answer✔565 BTUs
What is the pressure of 5°F of ammonia? - Answer✔19.6 psig
1
, ©BRIGHTSTARS 2025 ALL RIGHTS RESERVED 9:46 AM A+
What are expansion valves rated in? - Answer✔Tons
What is an indication your expansion valve is leaking? - Answer✔It would frost up
What formula is used to determine tower water cycles? - Answer✔Tower water chlorides /
make up water chlorides
What will cause high head pressure? - Answer✔A dirty condenser / air
How many lbs of refrigerant can be stored in a cylinder with a 125 lb capacity? - Answer✔100
lbs
What 2 values are needed to calculate the amount of refrigeration req'd? - Answer✔BTUs to be
removed & the time req'd to compress the refrigerant
Which seal would not be used on a compressor? - Answer✔Mechanical seal
Where is the booster compressor of a 2-stage refrigeration system is located? -
Answer✔Between the evaporator & the intercooler
Which chemistry is used to determine tower water cycles? - Answer✔chlorides
Where is the location of a sub-cooler or pre-cooler? - Answer✔Before the expansion valve
What is the formula for Boyle's Law? - Answer✔P1 x V1 = P2 x V2
In a shell and tube heat exchanger, where is the refrigerant located? - Answer✔Shell side
2
