©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
RV REFRIGERATORS Exam Questions With
Correct Answers 100% Verified.
Name the components of an absorption refrigerator cooling unit - Answer✔Boiler,
condenser,
evaporator,
absorber
in an absorption refrigerator water, ammonia, hydrogen gas and a neutralizing agent are
combined under pressure. which element is not directly involved in the cooling process? -
Answer✔sodium chromate
study sequence of operations - Answer✔
The __________ absorbs heat from the ammonia vapor, allowing it to change into liquid
ammonia - Answer✔condenser
In the __________ liquid ammonia evaporates upon interaction with the hydrogen. This
absorbs the heat and lowers the refrigerator/freezer temperature - Answer✔evaporator
The __________ transfers heat from warm liquid ammonia on its way to the evaporator to cool
the vapor coming out of the evaporator - Answer✔Gas heat exchanger
The__________ absorbs ammonia out of the ammonia/hydrogen mixture and lets the
hydrogen return to the cooling unit - Answer✔absorber
In the __________ heat from weak ammonia water solution is transferred to the strong/rich
ammonia water solution - Answer✔liquid heat exchanger
The __________ removes/ condenses the water vapor. The ammonia vapor continues into the
condenser. - Answer✔water separator/ rectifier
In the __________ the heat source produces ammonia and vapor. The rising vapors cause
bubbles, which flow up the pump tube. - Answer✔boiler
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
List the three requirements necessary for proper refrigeration operation. - Answer✔leveling,
heat,
ventilation
List the three sources of heat for an absorption refrigerator - Answer✔propane,
120 VAC
12 VDC
Explain why leveling is so important for an absorption refrigerator - Answer✔Without proper
leveling, the gravity-flow system will not function properly, and the refrigerant within the
cooling coils will collect and stagnate at certain areas. The sodium chromate solution can
crystallize creating blockages
True/False
Cooling system coils should be scraped and repainted as necessary to prevent rust. -
Answer✔false
hydrogen gas has a static pressure of 250 psi. It has a maximum pressure of __________ psi. -
Answer✔600
Never try to repair a damage cooling unit. Always replace it. - Answer✔true
In an absorption refrigerator, the __________ vaporizes in the hydrogen gas atmosphere and
absorbs heat from the inside of the refrigerator. - Answer✔ammonia
The function of the sodium chromate is to absorb water from the ammonia solution -
Answer✔false
An excessive amount of heat in the cooling unit will cause - Answer✔Both the water and
ammonia to evaporate
When operating on electricity, the absorption refrigerator uses the electricity to provide spark
to to the burner for ignition of the propane - Answer✔false
The cooling unit consists of four components: the boiler, condenser, absorber and the
evaporator. List the five components of the boiler. - Answer✔boiler,
heater pocket,
flue tube,
pump tube,
water separator/ rectifier
2
RV REFRIGERATORS Exam Questions With
Correct Answers 100% Verified.
Name the components of an absorption refrigerator cooling unit - Answer✔Boiler,
condenser,
evaporator,
absorber
in an absorption refrigerator water, ammonia, hydrogen gas and a neutralizing agent are
combined under pressure. which element is not directly involved in the cooling process? -
Answer✔sodium chromate
study sequence of operations - Answer✔
The __________ absorbs heat from the ammonia vapor, allowing it to change into liquid
ammonia - Answer✔condenser
In the __________ liquid ammonia evaporates upon interaction with the hydrogen. This
absorbs the heat and lowers the refrigerator/freezer temperature - Answer✔evaporator
The __________ transfers heat from warm liquid ammonia on its way to the evaporator to cool
the vapor coming out of the evaporator - Answer✔Gas heat exchanger
The__________ absorbs ammonia out of the ammonia/hydrogen mixture and lets the
hydrogen return to the cooling unit - Answer✔absorber
In the __________ heat from weak ammonia water solution is transferred to the strong/rich
ammonia water solution - Answer✔liquid heat exchanger
The __________ removes/ condenses the water vapor. The ammonia vapor continues into the
condenser. - Answer✔water separator/ rectifier
In the __________ the heat source produces ammonia and vapor. The rising vapors cause
bubbles, which flow up the pump tube. - Answer✔boiler
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
List the three requirements necessary for proper refrigeration operation. - Answer✔leveling,
heat,
ventilation
List the three sources of heat for an absorption refrigerator - Answer✔propane,
120 VAC
12 VDC
Explain why leveling is so important for an absorption refrigerator - Answer✔Without proper
leveling, the gravity-flow system will not function properly, and the refrigerant within the
cooling coils will collect and stagnate at certain areas. The sodium chromate solution can
crystallize creating blockages
True/False
Cooling system coils should be scraped and repainted as necessary to prevent rust. -
Answer✔false
hydrogen gas has a static pressure of 250 psi. It has a maximum pressure of __________ psi. -
Answer✔600
Never try to repair a damage cooling unit. Always replace it. - Answer✔true
In an absorption refrigerator, the __________ vaporizes in the hydrogen gas atmosphere and
absorbs heat from the inside of the refrigerator. - Answer✔ammonia
The function of the sodium chromate is to absorb water from the ammonia solution -
Answer✔false
An excessive amount of heat in the cooling unit will cause - Answer✔Both the water and
ammonia to evaporate
When operating on electricity, the absorption refrigerator uses the electricity to provide spark
to to the burner for ignition of the propane - Answer✔false
The cooling unit consists of four components: the boiler, condenser, absorber and the
evaporator. List the five components of the boiler. - Answer✔boiler,
heater pocket,
flue tube,
pump tube,
water separator/ rectifier
2
