Question 1

What is contained in the receiver-drier that captures the moisture that has entered the air conditioning system?

Accepted Answer

A)  The pickup tube 
B)  The desiccant 
C)  The strainers 
D)  The sight glass 
A)  The pickup tube 
B)  The desiccant 
C)  The strainers 
D)  The sight glass B

Question 2

How is air forced through the fines of the condenser?

Accepted Answer

A)  Ram air effect as the vehicle moves forward 
B)  An engine mounted fan that pulls air through the condenser 
C)  An air pump driven off the engine turbo charger 
D)  Both statements A and B are correct 
A)  Ram air effect as the vehicle moves forward 
B)  An engine mounted fan that pulls air through the condenser 
C)  An air pump driven off the engine turbo charger 
D)  Both statements A and B are correct D

Question 3

In order for the air condition system to operate properly the refrigerant in the condenser must be:

Accepted Answer

A)  At a higher temperature than the ambient air 
B)  At a lower temperature than the ambient air 
C)  At approximately the same temperature as the ambient air 
D)  It does not matter what temperature the refrigerant enters the condenser 
A)  At a higher temperature than the ambient air 
B)  At a lower temperature than the ambient air 
C)  At approximately the same temperature as the ambient air 
D)  It does not matter what temperature the refrigerant enters the condenser A

Question 4

Where would you expect to find the condenser mounted on the truck?

Accepted Answer

A)  On the fire wall 
B)  Inside the truck cab 
C)  Inside the bunk 
D)  In front of the engine radiator 
A)  On the fire wall 
B)  Inside the truck cab 
C)  Inside the bunk 
D)  In front of the engine radiator

Question 5

Identify the two refrigerant lines that are attached to the compressor.

Accepted Answer

A)  The exhaust and intake lines 
B)  The suction and discharge lines 
C)  The turbo and induction lines 
D)  The liquid and vapor lines 
A)  The exhaust and intake lines 
B)  The suction and discharge lines 
C)  The turbo and induction lines 
D)  The liquid and vapor lines

Question 6

What happens to the superheated refrigerant as it passes through the condenser?

Accepted Answer

A)  The refrigerant comes in contact with the hot ambient air and becomes further superheated. 
B)  The refrigerant is cooled causing it to change into a vaporous state. 
C)  The refrigerant is cooled causing it to change states into low pressure liquid. 
D)  The refrigerant is cooled causing it to change states into high pressure liquid. 
A)  The refrigerant comes in contact with the hot ambient air and becomes further superheated. 
B)  The refrigerant is cooled causing it to change into a vaporous state. 
C)  The refrigerant is cooled causing it to change states into low pressure liquid. 
D)  The refrigerant is cooled causing it to change states into high pressure liquid.

Question 7

A variable displacement compressor:

Accepted Answer

A)  Cycles the clutch to regulate temperature 
B)  Changes the compressor displacement to regulate the temperature 
C)  Uses control valve to change the angel of the wobble plate 
D)  Both statements B and C are correct 
A)  Cycles the clutch to regulate temperature 
B)  Changes the compressor displacement to regulate the temperature 
C)  Uses control valve to change the angel of the wobble plate 
D)  Both statements B and C are correct

Question 8

Of the following compressor styles which one uses the fewest moving parts?

Accepted Answer

A)  Swash plate style 
B)  Rotary vane style 
C)  Scotch yoke style 
D)  Scroll type 
A)  Swash plate style 
B)  Rotary vane style 
C)  Scotch yoke style 
D)  Scroll type

Question 9

Which of the following functions does the receiver-drier not perform?

Accepted Answer

A)  Filters refrigerant 
B)  Causes refrigerant to change states 
C)  Removes moisture from refrigerant 
D)  Stores refrigerant 
A)  Filters refrigerant 
B)  Causes refrigerant to change states 
C)  Removes moisture from refrigerant 
D)  Stores refrigerant

Question 10

In regards to the two lines that are attached to the compressor:

Accepted Answer

A)  The smaller line is the discharge line 
B)  The larger line is the discharge line 
C)  The larger line is the suction line 
D)  Both A and C are correct statements 
A)  The smaller line is the discharge line 
B)  The larger line is the discharge line 
C)  The larger line is the suction line 
D)  Both A and C are correct statements

Question 11

In regards to the two piston compressor what causes the intake read valve to open?

Accepted Answer

A)  Spring pressure 
B)  The camshaft 
C)  Differential pressure 
D)  Crankshaft rotation 
A)  Spring pressure 
B)  The camshaft 
C)  Differential pressure 
D)  Crankshaft rotation

Question 12

Which of the following is true when mounting a receiver-drier?

Accepted Answer

A)  The refrigerant lines must be connected to the correct drier in and out ports 
B)  The receiver drier must be installed in a vertical position or not more than 15 degrees from vertical 
C)  The drier should be installed immediately after the protective caps have been removed 
D)  All of the above statements are correct 
A)  The refrigerant lines must be connected to the correct drier in and out ports 
B)  The receiver drier must be installed in a vertical position or not more than 15 degrees from vertical 
C)  The drier should be installed immediately after the protective caps have been removed 
D)  All of the above statements are correct

Question 13

Which of the following should not be done when servicing a condenser?

Accepted Answer

A)  Use a fin comb to straighten any misaligned or bent cooling fins. 
B)  Use a good pressure washer to remove road debris from the condenser fins. 
C)  Use a mild soap solution to help remove road debris from the condenser fins with a soft nylon brush. 
D)  Use a garden hose (low pressure) to rinse soap solution from the condenser. 
A)  Use a fin comb to straighten any misaligned or bent cooling fins. 
B)  Use a good pressure washer to remove road debris from the condenser fins. 
C)  Use a mild soap solution to help remove road debris from the condenser fins with a soft nylon brush. 
D)  Use a garden hose (low pressure) to rinse soap solution from the condenser.

Question 14

If the receiver drier becomes saturated which of the following could occur?

Accepted Answer

A)  The excess moisture can react with the refrigerant to form hydrochloric acid 
B)  The moisture can collect together and freeze into a blockage 
C)  An operator may complain that the air conditioning system works intermittently 
D)  All of the above may occur 
A)  The excess moisture can react with the refrigerant to form hydrochloric acid 
B)  The moisture can collect together and freeze into a blockage 
C)  An operator may complain that the air conditioning system works intermittently 
D)  All of the above may occur

Question 15

If a drier becomes restricted it may be detected by _____________________ when the system is operating.

Accepted Answer

A)  Higher than normal drier temperature 
B)  Lower than normal drier temperature 
C)  A warm dryer inlet and a cold dryer outlet temperature 
D)  A rise in suction pressure 
A)  Higher than normal drier temperature 
B)  Lower than normal drier temperature 
C)  A warm dryer inlet and a cold dryer outlet temperature 
D)  A rise in suction pressure

What is contained in the receiver-drier that captures the moisture that has entered the air conditioning system?

How is air forced through the fines of the condenser?

In order for the air condition system to operate properly the refrigerant in the condenser must be:

Where would you expect to find the condenser mounted on the truck?

Identify the two refrigerant lines that are attached to the compressor.

What happens to the superheated refrigerant as it passes through the condenser?

A variable displacement compressor:

Of the following compressor styles which one uses the fewest moving parts?

Which of the following functions does the receiver-drier not perform?

In regards to the two lines that are attached to the compressor:

In regards to the two piston compressor what causes the intake read valve to open?

Which of the following is true when mounting a receiver-drier?

Which of the following should not be done when servicing a condenser?

If the receiver drier becomes saturated which of the following could occur?

If a drier becomes restricted it may be detected by _____________________ when the system is operating.

History of Hvac

Environmental and Safety Practices

Thermodynamics

Air-Conditioning Components: Metering Devices, Evaporator, Accumulator

Air Conditioning Systems

Service Procedures

Truck Engine Cooling Systems

Climate Controlsupplemental Truck Heatingcooling

Trouble Shooting

Apadsacpu Air Conditioning Control Systems Air Conditioning Protection Unit

Coach Air Conditioning

Truck Trailer Refrigeration Equipment

Truck Trailer Refrigeration Components

Truck Trailer Refrigerant Flow Control

Truck Trailer Refrigeration Electrical Components

Truck Trailer Refrigeration Maintenance Procedures

Filters

Exam 4: Air Conditioning Components: Compressor, Condenser, and Receiver-Drier

What is contained in the receiver-drier that captures the moisture that has entered the air conditioning system?

How is air forced through the fines of the condenser?

In order for the air condition system to operate properly the refrigerant in the condenser must be:

Where would you expect to find the condenser mounted on the truck?

Identify the two refrigerant lines that are attached to the compressor.

What happens to the superheated refrigerant as it passes through the condenser?

A variable displacement compressor:

Of the following compressor styles which one uses the fewest moving parts?

Which of the following functions does the receiver-drier not perform?

In regards to the two lines that are attached to the compressor:

In regards to the two piston compressor what causes the intake read valve to open?

Which of the following is true when mounting a receiver-drier?

Which of the following should not be done when servicing a condenser?

If the receiver drier becomes saturated which of the following could occur?

If a drier becomes restricted it may be detected by _____________________ when the system is operating.

History of Hvac

Environmental and Safety Practices

Thermodynamics

Air-Conditioning Components: Metering Devices, Evaporator, Accumulator

Air Conditioning Systems

Service Procedures

Truck Engine Cooling Systems

Climate Controlsupplemental Truck Heatingcooling

Trouble Shooting

Apadsacpu Air Conditioning Control Systems Air Conditioning Protection Unit

Coach Air Conditioning

Truck Trailer Refrigeration Equipment

Truck Trailer Refrigeration Components

Truck Trailer Refrigerant Flow Control

Truck Trailer Refrigeration Electrical Components

Truck Trailer Refrigeration Maintenance Procedures

Filters