Ironworker NCCER {HVAC Cooling}
Verified Multiple Choice and Conceptual Actual
Frequently Tested Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
What does atmospheric pressure measure?
A. The pressure inside a refrigeration system
B. The pressure of refrigerant vapor in the condenser
C. The pressure exerted on Earth’s surface by the weight of the atmosphere (14.7
psi at sea level, 70°F)
D. The discharge pressure of the compressor
How much heat is required to raise the temperature of one pound of water by
one degree Fahrenheit?
A. One BTU
B. Ten BTUs
C. One kilocalorie
D. 100 joules
Which type of heat can be measured by a thermometer?
A. Latent heat
B. Hidden heat
C. Sensible heat
D. Total heat
, When ice melts into water, what type of heat is absorbed?
A. Sensible heat
B. Latent heat of fusion
C. Latent heat of vaporization
D. Total heat
Which of the following correctly defines total heat in a substance?
A. The sum of sensible and latent heat
B. The difference between heat gained and heat lost
C. The heat removed by subcooling
D. The total mechanical work done
What does the term enthalpy refer to in HVAC?
A. The total heat content of a refrigerant, including latent and sensible heat
B. The cooling effect inside the evaporator
C. The heat removed by the condenser fan
D. The amount of heat added during superheat
The heat energy added to a liquid refrigerant to change it into a vapor without
a change in temperature is called:
A. Latent heat of vaporization
B. Sensible heat
C. Specific heat
D. Conduction heat
The boiling point of a refrigerant at a given pressure is referred to as its:
A. Superheat temperature
B. Saturation temperature
Verified Multiple Choice and Conceptual Actual
Frequently Tested Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
What does atmospheric pressure measure?
A. The pressure inside a refrigeration system
B. The pressure of refrigerant vapor in the condenser
C. The pressure exerted on Earth’s surface by the weight of the atmosphere (14.7
psi at sea level, 70°F)
D. The discharge pressure of the compressor
How much heat is required to raise the temperature of one pound of water by
one degree Fahrenheit?
A. One BTU
B. Ten BTUs
C. One kilocalorie
D. 100 joules
Which type of heat can be measured by a thermometer?
A. Latent heat
B. Hidden heat
C. Sensible heat
D. Total heat
, When ice melts into water, what type of heat is absorbed?
A. Sensible heat
B. Latent heat of fusion
C. Latent heat of vaporization
D. Total heat
Which of the following correctly defines total heat in a substance?
A. The sum of sensible and latent heat
B. The difference between heat gained and heat lost
C. The heat removed by subcooling
D. The total mechanical work done
What does the term enthalpy refer to in HVAC?
A. The total heat content of a refrigerant, including latent and sensible heat
B. The cooling effect inside the evaporator
C. The heat removed by the condenser fan
D. The amount of heat added during superheat
The heat energy added to a liquid refrigerant to change it into a vapor without
a change in temperature is called:
A. Latent heat of vaporization
B. Sensible heat
C. Specific heat
D. Conduction heat
The boiling point of a refrigerant at a given pressure is referred to as its:
A. Superheat temperature
B. Saturation temperature
