HVAC AC Excellence Exam Questions
With Correct
Heat which causes a change in temperature of a substance is called -
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CORRECT ANSWER✔✔-Sensible Heat
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Heat added to a substance without a rise in temperature: (example)
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liquid refrigerant to gas) this process is called - CORRECT ANSWER✔✔-
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Latent Heat of Vaporization
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Heat added to a refrigerant in a vapor state after the evaporation
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process is called? - CORRECT ANSWER✔✔-Superheat
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A scroll compressor mover refrigerant means of? - CORRECT
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ANSWER✔✔-Involutes spiral |
The movement of heat by way of fluid (or air) is called? - CORRECT
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ANSWER✔✔-Convection
The movement of heat by through a solid object is callled? - CORRECT
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ANSWER✔✔-Conduction
, The standard unit for measuring the quantity of heat in a substance is? -
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CORRECT ANSWER✔✔-BTU British Thermal Unit
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A refrigerant gives heat when - CORRECT ANSWER✔✔-It Condenses
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Why must refrigerant in the suction line be slightly warmer than the
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saturation temperature? - CORRECT ANSWER✔✔-Prevent Liquid
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Slugging of the Compressor
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The state of the refrigerant in the suction line should be - CORRECT
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ANSWER✔✔-Low Pressure/ Low Temperature Vapor | | | |
The state of refrigerant entering the condenser is - CORRECT
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ANSWER✔✔-Low Pressure/ Low Temperature Vapor | | | |
The Evaporator - CORRECT ANSWER✔✔-Transfers heat from the
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refrigerated space to the refrigerant
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Which of the following is not a thermodynamic property of refrigerant?
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- CORRECT ANSWER✔✔-Flammability
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The sequential order of steps in the evaporator -compressor are? -
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CORRECT ANSWER✔✔-Compression, Condensation, Expansion,
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Vaporization
With Correct
Heat which causes a change in temperature of a substance is called -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-Sensible Heat
| |
Heat added to a substance without a rise in temperature: (example)
| | | | | | | | | | |
liquid refrigerant to gas) this process is called - CORRECT ANSWER✔✔-
| | | | | | | | | |
Latent Heat of Vaporization
| | |
Heat added to a refrigerant in a vapor state after the evaporation
| | | | | | | | | | | |
process is called? - CORRECT ANSWER✔✔-Superheat
| | | | |
A scroll compressor mover refrigerant means of? - CORRECT
| | | | | | | | |
ANSWER✔✔-Involutes spiral |
The movement of heat by way of fluid (or air) is called? - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-Convection
The movement of heat by through a solid object is callled? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-Conduction
, The standard unit for measuring the quantity of heat in a substance is? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-BTU British Thermal Unit
| | | |
A refrigerant gives heat when - CORRECT ANSWER✔✔-It Condenses
| | | | | | | |
Why must refrigerant in the suction line be slightly warmer than the
| | | | | | | | | | | |
saturation temperature? - CORRECT ANSWER✔✔-Prevent Liquid
| | | | | |
Slugging of the Compressor
| | |
The state of the refrigerant in the suction line should be - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-Low Pressure/ Low Temperature Vapor | | | |
The state of refrigerant entering the condenser is - CORRECT
| | | | | | | | | |
ANSWER✔✔-Low Pressure/ Low Temperature Vapor | | | |
The Evaporator - CORRECT ANSWER✔✔-Transfers heat from the
| | | | | | | |
refrigerated space to the refrigerant
| | | |
Which of the following is not a thermodynamic property of refrigerant?
| | | | | | | | | |
- CORRECT ANSWER✔✔-Flammability
| | |
The sequential order of steps in the evaporator -compressor are? -
| | | | | | | | | | |
CORRECT ANSWER✔✔-Compression, Condensation, Expansion,
| | | |
Vaporization
