Question 1

Define heat load.

Accepted Answer

Heat load is the amo...

Question 2

What is meant by the term starved evaporator?

Accepted Answer

A starved evaporator is the re...

Question 3

What is a flooded evaporator and how does it occur? What are the results of this condition?

Accepted Answer

A flooded evaporator is the result of to...

Question 4

Technician A says the amount of refrigerant flowing through an orifice tube is controlled by a remote sensing bulb.Technician B says the orifice tube is located in the liquid line between the condenser outlet and evaporator inlet.Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor BE) A) and B)
F) A) and C)

Question 5

The correct oil for use with R-134a is mineral oil.

Accepted Answer

A) True 
 B)False

Question 6

Describe the two major functions of the air conditioning system compressor.

Accepted Answer

To pressurize the re...

Question 7

Once the refrigerant from the air conditioning system has been recovered,which of the following should the technician do?

Accepted Answer

A)   Check the purity of the refrigerant in the recovery tank.
B)   Change the recovery unit fiters.
C)   Record the amount of refrigerant oil removed from the system.
D)   Change the receiver-drier.E) A) and C)
F) B) and C)

Question 8

What is the function of the orifice tube?

Accepted Answer

The orifice tube establishes a...

Question 9

What is the purpose of the evaporator?

Accepted Answer

The purpose of the evaporator ...

Question 10

Why is the remote bulb of a thermostatic expansion valve attached with insulated tape to the refrigerant line?

Accepted Answer

To keep it...

Question 11

If the refrigerant system is suspected of being contaminated with moisture what component should also be replaced?

Accepted Answer

If the refrigerant system is s...

Question 12

Technician A says in an H-block valve the temperature sensing sleeve (bulb) is internally located in the outlet port of the valve.Technician B says the operation and function of the H-valve,or block valve,are essentially the same as the thermostatic expansion valve (TXV) .Who is correct?

Accepted Answer

A)   Technician A only
B)   Technician B only
C)   Both A and B
D)   Neither A nor BE) None of the above
F) All of the above

Question 13

The expansion valve regulates the evaporator temperature based on the thermal heat load it detects.

Accepted Answer

A) True 
 B)False

Question 14

What is the function of the evaporator case drain vent?

Accepted Answer

During normal system operation,moisture ...

Question 15

The EPA requires the replacement of hoses or seals during the retrofit of a vehicle from R-12 to R-134a.

Accepted Answer

A) True 
 B)False

Question 16

Refrigerant enters the compressor as a

Accepted Answer

A)   high-pressure vapor.
B)   low-pressure vapor.
C)   low-pressure liquid.
D)   high-pressure liquid.E) None of the above
F) All of the above

Question 17

What effect will bent cooling fins on the condenser have on the refrigerant system?

Accepted Answer

The efficiency of th...

Question 18

A flooded evaporator can cause damage to the

Accepted Answer

A)   compressor.
B)   condenser.
C)   expansion valve.
D)   receiver-drier.E) All of the above
F) C) and D)

Question 19

Describe what happens to the refrigerant within the evaporator.

Accepted Answer

Heat from the air flowing over the evapo...

Question 20

Before attempting to service an automotive air-conditioning system consider all of the following Except:

Accepted Answer

A)   Can customer afford the repair?
B)   Do you have the proper tools and equipment to service the system?
C)   Listen to customer complaint.
D)   Does your diagnosis make sense based on customer complaint.E) A) and C)
F) B) and C)

Exam 5: Refrigerant System Componentsservicing System Components

Describe the two major functions of the air conditioning system compressor.

Correct AnswerverifiedTo pressurize the re...View AnswerShow Answer

What is meant by the term starved evaporator?

Correct AnswerverifiedA starved evaporator is the re...View AnswerShow Answer

What effect will bent cooling fins on the condenser have on the refrigerant system?

Correct AnswerverifiedThe efficiency of th...View AnswerShow Answer

The EPA requires the replacement of hoses or seals during the retrofit of a vehicle from R-12 to R-134a.

Correct AnswerverifiedShow Answer

What is the function of the evaporator case drain vent?

Correct AnswerverifiedDuring normal system operation,moisture ...View AnswerShow Answer

A flooded evaporator can cause damage to the

Correct AnswerverifiedShow Answer

The correct oil for use with R-134a is mineral oil.

Correct AnswerverifiedShow Answer

Why is the remote bulb of a thermostatic expansion valve attached with insulated tape to the refrigerant line?

Correct AnswerverifiedTo keep it...View AnswerShow Answer

What is a flooded evaporator and how does it occur? What are the results of this condition?

Correct AnswerverifiedA flooded evaporator is the result of to...View AnswerShow Answer

Once the refrigerant from the air conditioning system has been recovered,which of the following should the technician do?

Correct AnswerverifiedShow Answer

If the refrigerant system is suspected of being contaminated with moisture what component should also be replaced?

Correct AnswerverifiedIf the refrigerant system is s...View AnswerShow Answer

Describe what happens to the refrigerant within the evaporator.

Correct AnswerverifiedHeat from the air flowing over the evapo...View AnswerShow Answer

What is the function of the orifice tube?

Correct AnswerverifiedThe orifice tube establishes a...View AnswerShow Answer

Define heat load.

Correct AnswerverifiedHeat load is the amo...View AnswerShow Answer

Refrigerant enters the compressor as a

Correct AnswerverifiedShow Answer

Technician A says the amount of refrigerant flowing through an orifice tube is controlled by a remote sensing bulb.Technician B says the orifice tube is located in the liquid line between the condenser outlet and evaporator inlet.Who is correct?

Correct AnswerverifiedShow Answer

Before attempting to service an automotive air-conditioning system consider all of the following Except:

Correct AnswerverifiedShow Answer

The expansion valve regulates the evaporator temperature based on the thermal heat load it detects.

Correct AnswerverifiedShow Answer

What is the purpose of the evaporator?

Correct AnswerverifiedThe purpose of the evaporator ...View AnswerShow Answer

Technician A says in an H-block valve the temperature sensing sleeve (bulb) is internally located in the outlet port of the valve.Technician B says the operation and function of the H-valve,or block valve,are essentially the same as the thermostatic expansion valve (TXV) .Who is correct?

Correct AnswerverifiedShow Answer

Correct Answer
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To pressurize the re...
View Answer

Correct Answer
verified
A starved evaporator is the re...
View Answer

Correct Answer
verified
The efficiency of th...
View Answer

Correct Answer
verified

Correct Answer
verified
During normal system operation,moisture ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
To keep it...
View Answer

Correct Answer
verified
A flooded evaporator is the result of to...
View Answer

Correct Answer
verified

Correct Answer
verified
If the refrigerant system is s...
View Answer

Correct Answer
verified
Heat from the air flowing over the evapo...
View Answer

Correct Answer
verified
The orifice tube establishes a...
View Answer

Correct Answer
verified
Heat load is the amo...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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The purpose of the evaporator ...
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Correct Answer
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