Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
Convection is the transfer of ____ -
correct answer ✅heat through a material or substance
Radiation is the ____ -
correct answer ✅projection of heat like the heat radiated by the
sun or by an open flame
T or F: Heat is always on the move, traveling only in one direction
and always from hot to cold -
correct answer ✅false
What are two methods of heat transfer? -
correct answer ✅conduction and convection
What are two basic forms of refrigeration systems? -
correct answer ✅direct expansion and gravity flooded
T or F: Conduction is the heat transferred due to the temperature
being different on one side of a room than the other like the heat
rising in a room -
correct answer ✅true
,Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: A basic refrigeration system consists of an expansion device,
an evaporator, a compressor, and a condenser connected by a
series of pipes -
correct answer ✅true
T or F: Compression occurs as the ammonia refrigerant passes
through the evaporator -
correct answer ✅false
T or F: The high side includes all components between the pressure
reduction device outlet to a point inside the compressor -
correct answer ✅false
Heat contained in the area to be cooled and absorbed by the
ammonia refrigerant as it passes through the evaporator is called? -
correct answer ✅the load
The low side of an ammonia refrigeration system consists of ... -
correct answer ✅the pressure reduction device and the condenser
,Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: Expansion occurs as the refrigerant flows through the
compressor -
correct answer ✅false
T or F: When a hand expansion valve is opened, pressure behind
the valve forces liquid ammonia through a small opening causing a
deliberate pressure drop to occur -
correct answer ✅false
T or F: Evaporation takes place as the ammonia refrigerant flows
through the compressor -
correct answer ✅false
T or F: The evaporation process is completed when the ammonia
has passed through the evaporator -
correct answer ✅true
Absolute pressure is the pressure read by a gauge, plus the ____
atmospheric pressure -
correct answer ✅ambient
, Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: A pumped liquid, or re-circulation single stage system
consists of a receiver, a king valve, a pressure reduction device, an
evaporator, a compressor, a condenser, a vessel, a pump and an
additional flow metering device -
correct answer ✅true
Where is the worst place to have a leak in an ammonia refrigeration
system? -
correct answer ✅high pressure liquid
How many BTUs does it take to convert 1 lb of saturated ammonia
to 1 lb of saturated gas? -
correct answer ✅561
How many BTUs does it take to convert 1 lb of liquid water at 212°
to steam as 212°F -
correct answer ✅970
How many BTUs does it take to melt 1 lb of ice into water at 32°F -
correct answer ✅144
Questions and Answers (Latest
Update 2026)
Convection is the transfer of ____ -
correct answer ✅heat through a material or substance
Radiation is the ____ -
correct answer ✅projection of heat like the heat radiated by the
sun or by an open flame
T or F: Heat is always on the move, traveling only in one direction
and always from hot to cold -
correct answer ✅false
What are two methods of heat transfer? -
correct answer ✅conduction and convection
What are two basic forms of refrigeration systems? -
correct answer ✅direct expansion and gravity flooded
T or F: Conduction is the heat transferred due to the temperature
being different on one side of a room than the other like the heat
rising in a room -
correct answer ✅true
,Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: A basic refrigeration system consists of an expansion device,
an evaporator, a compressor, and a condenser connected by a
series of pipes -
correct answer ✅true
T or F: Compression occurs as the ammonia refrigerant passes
through the evaporator -
correct answer ✅false
T or F: The high side includes all components between the pressure
reduction device outlet to a point inside the compressor -
correct answer ✅false
Heat contained in the area to be cooled and absorbed by the
ammonia refrigerant as it passes through the evaporator is called? -
correct answer ✅the load
The low side of an ammonia refrigeration system consists of ... -
correct answer ✅the pressure reduction device and the condenser
,Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: Expansion occurs as the refrigerant flows through the
compressor -
correct answer ✅false
T or F: When a hand expansion valve is opened, pressure behind
the valve forces liquid ammonia through a small opening causing a
deliberate pressure drop to occur -
correct answer ✅false
T or F: Evaporation takes place as the ammonia refrigerant flows
through the compressor -
correct answer ✅false
T or F: The evaporation process is completed when the ammonia
has passed through the evaporator -
correct answer ✅true
Absolute pressure is the pressure read by a gauge, plus the ____
atmospheric pressure -
correct answer ✅ambient
, Ammonia Refrigeration Final Exam
Questions and Answers (Latest
Update 2026)
T or F: A pumped liquid, or re-circulation single stage system
consists of a receiver, a king valve, a pressure reduction device, an
evaporator, a compressor, a condenser, a vessel, a pump and an
additional flow metering device -
correct answer ✅true
Where is the worst place to have a leak in an ammonia refrigeration
system? -
correct answer ✅high pressure liquid
How many BTUs does it take to convert 1 lb of saturated ammonia
to 1 lb of saturated gas? -
correct answer ✅561
How many BTUs does it take to convert 1 lb of liquid water at 212°
to steam as 212°F -
correct answer ✅970
How many BTUs does it take to melt 1 lb of ice into water at 32°F -
correct answer ✅144
