Question 1

The direction heat flows is from:

Accepted Answer

A)  high temperature to lower temperature 
B)  low temperature to high temperature 
C)  molecule to molecule 
D)  atom to atom 
A)  high temperature to lower temperature 
B)  low temperature to high temperature 
C)  molecule to molecule 
D)  atom to atom A

Question 2

What temperature would it be if all the molecules stopped moving?

Accepted Answer

A)  100° F 
B)  32°F 
C)  0°F 
D)  -459°F 
A)  100° F 
B)  32°F 
C)  0°F 
D)  -459°F D

Question 3

If an air conditioning system is considered to be a two ton unit, it would be capable of removing _______ BTU's of heat energy per hour.

Accepted Answer

A)  1000 
B)  2000 
C)  12,000 
D)  24,000 
A)  1000 
B)  2000 
C)  12,000 
D)  24,000 D

Question 4

Thermal equilibrium takes place when:

Accepted Answer

A)  The heat from an object is given off to a cooler room 
B)  The heat of the room is transferred to a cooler object 
C)  Heat is removed very quickly from an object in a room 
D)  Both the object and the room are at exactly the same temperature 
A)  The heat from an object is given off to a cooler room 
B)  The heat of the room is transferred to a cooler object 
C)  Heat is removed very quickly from an object in a room 
D)  Both the object and the room are at exactly the same temperature

Question 5

Water in a closed container can boil at room temperature if:

Accepted Answer

A)  Enough pressure is removed from the surface of the water. 
B)  Enough pressure is a applied to the surface of the water. 
C)  Enough heat is removed from the water. 
D)  Superheated 
A)  Enough pressure is removed from the surface of the water. 
B)  Enough pressure is a applied to the surface of the water. 
C)  Enough heat is removed from the water. 
D)  Superheated

Question 6

Minus 459°F is the temperature considered to be:

Accepted Answer

A)  extremely cold 
B)  absolute 0 
C)  absolute 459 
D)  the lowest temperature ever obtained 
A)  extremely cold 
B)  absolute 0 
C)  absolute 459 
D)  the lowest temperature ever obtained

Question 7

How much pressure would you have to apply to the surface of water in a closed container to increase the boiling point to 227° F?

Accepted Answer

A)  2 pounds 
B)  3 pounds 
C)  4 pounds 
D)  5 pounds 
A)  2 pounds 
B)  3 pounds 
C)  4 pounds 
D)  5 pounds

Question 8

What is considered to be atmospheric pressure at sea level?

Accepted Answer

A)  5 PSIG 
B)  10 PSIA 
C)  14.7 PSIG 
D)  14.7 PSIA 
A)  5 PSIG 
B)  10 PSIA 
C)  14.7 PSIG 
D)  14.7 PSIA

Question 9

What type of heat transfer takes place when temperature between the source and the absorbent surface is not affected?

Accepted Answer

A)  conduction 
B)  sublimation 
C)  convection 
D)  radiation 
A)  conduction 
B)  sublimation 
C)  convection 
D)  radiation

Question 10

When the humidity level of the ambient air increases:

Accepted Answer

A)  The air conditioning system does not have to work as hard to reduce the cab temperature. 
B)  The air conditioning system must work much harder to reduce the cab temperature. 
C)  It has no affect on the air conditioning system because it is self contained for the ambient air. 
D)  The air conditioning compressor runs cooler. 
A)  The air conditioning system does not have to work as hard to reduce the cab temperature. 
B)  The air conditioning system must work much harder to reduce the cab temperature. 
C)  It has no affect on the air conditioning system because it is self contained for the ambient air. 
D)  The air conditioning compressor runs cooler.

Question 11

A perfect vacuum is considered to be:

Accepted Answer

A)  10 inches of mercury 
B)  15 inches of mercury 
C)  29 inches of mercury 
D)  30 inches of mercury 
A)  10 inches of mercury 
B)  15 inches of mercury 
C)  29 inches of mercury 
D)  30 inches of mercury

Question 12

What kind of a gauge will read both positive and negative pressure?

Accepted Answer

A)  A micron gauge 
B)  A compound gauge 
C)  A high pressure manifold gauge 
D)  A gauge that reads in PSIA 
A)  A micron gauge 
B)  A compound gauge 
C)  A high pressure manifold gauge 
D)  A gauge that reads in PSIA

Question 13

When the pressure of a vapor goes up:

Accepted Answer

A)  Its temperature an boiling point go down 
B)  Its temperature and boiling point go up 
C)  Its temperature goes up while its boiling point goes down 
D)  Its temperature goes down while its boiling point goes up 
A)  Its temperature an boiling point go down 
B)  Its temperature and boiling point go up 
C)  Its temperature goes up while its boiling point goes down 
D)  Its temperature goes down while its boiling point goes up

Question 14

What is the term used to describe the temperature of a liquid below its boiling point?

Accepted Answer

A)  superheated 
B)  evaporated 
C)  subcooled 
D)  frozen 
A)  superheated 
B)  evaporated 
C)  subcooled 
D)  frozen

Question 15

When is the largest amount of heat energy absorbed or released during the air conditioning process?

Accepted Answer

A)  During the freezing process 
B)  During the evaporation process 
C)  During the condensing process 
D)  Both statements B and C are correct 
A)  During the freezing process 
B)  During the evaporation process 
C)  During the condensing process 
D)  Both statements B and C are correct

The direction heat flows is from:

What temperature would it be if all the molecules stopped moving?

If an air conditioning system is considered to be a two ton unit, it would be capable of removing _______ BTU's of heat energy per hour.

Thermal equilibrium takes place when:

Water in a closed container can boil at room temperature if:

Minus 459°F is the temperature considered to be:

How much pressure would you have to apply to the surface of water in a closed container to increase the boiling point to 227° F?

What is considered to be atmospheric pressure at sea level?

What type of heat transfer takes place when temperature between the source and the absorbent surface is not affected?

When the humidity level of the ambient air increases:

A perfect vacuum is considered to be:

What kind of a gauge will read both positive and negative pressure?

When the pressure of a vapor goes up:

What is the term used to describe the temperature of a liquid below its boiling point?

When is the largest amount of heat energy absorbed or released during the air conditioning process?

History of Hvac

Environmental and Safety Practices

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

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

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Exam 3: Thermodynamics

The direction heat flows is from:

What temperature would it be if all the molecules stopped moving?

If an air conditioning system is considered to be a two ton unit, it would be capable of removing _______ BTU's of heat energy per hour.

Thermal equilibrium takes place when:

Water in a closed container can boil at room temperature if:

Minus 459°F is the temperature considered to be:

How much pressure would you have to apply to the surface of water in a closed container to increase the boiling point to 227° F?

What is considered to be atmospheric pressure at sea level?

What type of heat transfer takes place when temperature between the source and the absorbent surface is not affected?

When the humidity level of the ambient air increases:

A perfect vacuum is considered to be:

What kind of a gauge will read both positive and negative pressure?

When the pressure of a vapor goes up:

What is the term used to describe the temperature of a liquid below its boiling point?

When is the largest amount of heat energy absorbed or released during the air conditioning process?

History of Hvac

Environmental and Safety Practices

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

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