Question 1

The boiling point of a refrigerant should be low enough at atmospheric pressure to keep the system pressure above 0 psig when operating at low temperatures.

Accepted Answer

A) True 
 B)False

Question 2

The ____ are used to change the vapor to a liquid and the liquid form back into a vapor, the refrigeration cycle.

Accepted Answer

A)   condenser and compressor
B)   compressor and expansion device
C)   expansion device and evaporator
D)   condenser and evaporatorE) B) and C)
F) None of the above

Question 3

The four (4) major components of a vapor compression refrigeration system are the compressor, condenser, evaporator, and ____________________.

Accepted Answer

The answer of The four (4) major components of a...

Question 4

The condenser ____.

Accepted Answer

A)   rejects the heat from the refrigerant
B)   controls the refrigerant flow throughout the system
C)   adds superheat to the refrigerant
D)   All of the above.E) A) and B)
F) A) and D) A

Question 5

Match between columns
                        Premises: Light blue
White
Purple
Silver
Orchid
Dark blue
Absorbs heat from the system.
Green
Yellow
Orange

Accepted Answer

The Answer of Compressor and R-717 and R-22 and R-12 is...

Question 6

The evaporator in a refrigeration system ____.

Accepted Answer

A)   reduces the boiling point of the refrigerant
B)   condenses the refrigerant
C)   absorbs heat from the product to be cooled
D)   compresses the refrigerant vaporE) A) and B)
F) C) and D)

Question 7

A ton of refrigeration is equal to ____.

Accepted Answer

A)   1 ton of ice
B)   288,000 Btu/24 h
C)   144 Btu/h
D)   12,000 Btu/minE) A) and B)
F) A) and C)

Question 8

An expansion valve is the pressure reducing device that controls the flow of liquid refrigerant into the evaporator.

Accepted Answer

A) True 
 B)False

Question 9

From a performance standpoint, a substitute for R-12 is ____________________.

Accepted Answer

The answer of From a performance standpoint, a substitute for...

Question 10

The discharge gas from the compressor is a high pressure, high temperature, superheated vapor.

Accepted Answer

A) True 
 B)False

Question 11

The evaporator can be thought of as a "heat sponge."

Accepted Answer

A) True 
 B)False  True

Question 12

The refrigerant vapor picks up additional heat as it flows from the evaporator to the compressor. The heat is picked up from the ____________________.

Accepted Answer

The answer of The refrigerant vapor picks up additional heat...

Question 13

Reciprocating compressors have ____.

Accepted Answer

A)   a piston and cylinder
B)   two scrolls that mesh together
C)   a rotor to compress the refrigerant
D)   a large fan compressor componentE) A) and D)
F) A) and C)

Question 14

Match between columns
                        Premises: A valve or small fixed-size tubing or orifice that meters liquid refrigerant into the evaporator.
Is the heart of the refrigeration system.
Rejects both sensible and latent heat from the refrigeration system.

Accepted Answer

The Answer of Evaporator and Condenser and Metering Device and is...

Question 15

The ____________________ is referred to as a kinetic displacement compressor.

Accepted Answer

centrifugal compressor

Question 16

If a cylinder of R-22 is moved from a 100°F truck body into an 80°F shop, the quantity of liquid refrigerant in the cylinder will remain the same.

Accepted Answer

A) True 
 B)False

Question 17

The ____________________ is another positive displacement compressor and is used for larger air conditioning and refrigeration applications.

Accepted Answer

The answer of The ____________________ is another positive displacement compressor...

Question 18

What is the purpose of the metering device?

Accepted Answer

It reduces the boiling point o...

Question 19

The amount of heat a refrigerant contains with -40 degree F as the 0 heat content reference point is called ____________________.

Accepted Answer

The answer of The amount of heat a refrigerant contains...

Question 20

When a refrigerant enters the compressor, it is a ____ and when it leaves the compressor, it is a ____.

Accepted Answer

A)   low pressure low temperature superheated vapor, high pressure high temperature superheated vapor
B)   low pressure low temperature superheated vapor, low pressure low temperature subcooled vapor
C)   high pressure superheated vapor, low pressure superheated vapor
D)   low pressure low temperature subcooled liquid, high pressure high temperature superheated vaporE) None of the above
F) B) and C)

Exam 3: Refrigeration and Refrigerants

The boiling point of a refrigerant should be low enough at atmospheric pressure to keep the system pressure above 0 psig when operating at low temperatures.

Correct Answer
verified

The ____ are used to change the vapor to a liquid and the liquid form back into a vapor, the refrigeration cycle.

Correct Answer
verified

The four (4) major components of a vapor compression refrigeration system are the compressor, condenser, evaporator, and ____________________.

Correct Answer
verified

The condenser ____.

Correct Answer
verified
A

In the illustration below, identify the indicated components.

The evaporator in a refrigeration system ____.

Correct Answer
verified

A ton of refrigeration is equal to ____.

Correct Answer
verified

An expansion valve is the pressure reducing device that controls the flow of liquid refrigerant into the evaporator.

Correct Answer
verified

From a performance standpoint, a substitute for R-12 is ____________________.

Correct Answer
verified

The discharge gas from the compressor is a high pressure, high temperature, superheated vapor.

Correct Answer
verified

The evaporator can be thought of as a "heat sponge."

Correct Answer
verified
True

The refrigerant vapor picks up additional heat as it flows from the evaporator to the compressor. The heat is picked up from the ____________________.

Correct Answer
verified

Reciprocating compressors have ____.

Correct Answer
verified

In the illustration below, identify the indicated components.

The ____________________ is referred to as a kinetic displacement compressor.

Correct Answer
verified
centrifugal compressor

If a cylinder of R-22 is moved from a 100°F truck body into an 80°F shop, the quantity of liquid refrigerant in the cylinder will remain the same.

Correct Answer
verified

The ____________________ is another positive displacement compressor and is used for larger air conditioning and refrigeration applications.

Correct Answer
verified

What is the purpose of the metering device?

Correct Answer
verified
It reduces the boiling point o...
View Answer

The amount of heat a refrigerant contains with -40 degree F as the 0 heat content reference point is called ____________________.

Correct Answer
verified

When a refrigerant enters the compressor, it is a and when it leaves the compressor, it is a .

Correct Answer
verified

Exam 3: Refrigeration and Refrigerants

The boiling point of a refrigerant should be low enough at atmospheric pressure to keep the system pressure above 0 psig when operating at low temperatures.

Correct AnswerverifiedShow Answer

The ____ are used to change the vapor to a liquid and the liquid form back into a vapor, the refrigeration cycle.

Correct AnswerverifiedShow Answer

The four (4) major components of a vapor compression refrigeration system are the compressor, condenser, evaporator, and ____________________.

Correct AnswerverifiedShow Answer

The condenser ____.

Correct AnswerverifiedA

In the illustration below, identify the indicated components.

The evaporator in a refrigeration system ____.

Correct AnswerverifiedShow Answer

A ton of refrigeration is equal to ____.

Correct AnswerverifiedShow Answer

An expansion valve is the pressure reducing device that controls the flow of liquid refrigerant into the evaporator.

Correct AnswerverifiedShow Answer

From a performance standpoint, a substitute for R-12 is ____________________.

Correct AnswerverifiedShow Answer

The discharge gas from the compressor is a high pressure, high temperature, superheated vapor.

Correct AnswerverifiedShow Answer

The evaporator can be thought of as a "heat sponge."

Correct AnswerverifiedTrue

The refrigerant vapor picks up additional heat as it flows from the evaporator to the compressor. The heat is picked up from the ____________________.

Correct AnswerverifiedShow Answer

Reciprocating compressors have ____.

Correct AnswerverifiedShow Answer

In the illustration below, identify the indicated components.

The ____________________ is referred to as a kinetic displacement compressor.

Correct Answerverifiedcentrifugal compressor

If a cylinder of R-22 is moved from a 100°F truck body into an 80°F shop, the quantity of liquid refrigerant in the cylinder will remain the same.

Correct AnswerverifiedShow Answer

The ____________________ is another positive displacement compressor and is used for larger air conditioning and refrigeration applications.

Correct AnswerverifiedShow Answer

What is the purpose of the metering device?

Correct AnswerverifiedIt reduces the boiling point o...View AnswerShow Answer

The amount of heat a refrigerant contains with -40 degree F as the 0 heat content reference point is called ____________________.

Correct AnswerverifiedShow Answer

When a refrigerant enters the compressor, it is a ____ and when it leaves the compressor, it is a ____.

Correct AnswerverifiedShow Answer

Correct Answer
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A

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Correct Answer
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Correct Answer
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True

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Correct Answer
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Correct Answer
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centrifugal compressor

Correct Answer
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Correct Answer
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Correct Answer
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It reduces the boiling point o...
View Answer

Correct Answer
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When a refrigerant enters the compressor, it is a and when it leaves the compressor, it is a .

Correct Answer
verified