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HVAC Air Condition Esco 2022 Questions and Correct Answers/ Latest Update / Already Graded

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Heat which causes a change in temperature of a substance is called Ans: Sensible Heat Heat added to a substance without a rise in temperature is called Ans: Latent Heat Heat added to refrigerant in a vapor state after the evaporation process is called Ans: Superheat A scroll compressor moved refrigerant by means of Ans: Involute spirals 2 | P a g e The movement of heat by way of fluid is called Ans: Convection The movement of heat through a solid object is called Ans: Conduction The standard unit for measuring the quantity of heat in a substance Ans: British Thermal Unit A refrigerant gives up heat when i

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HVAC Air Condition Esco
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HVAC Air Condition Esco

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HVAC Air Condition Esco 2022
Questions and Correct Answers/ Latest
Update / Already Graded
Heat which causes a change in temperature of a substance is

called


Ans: Sensible Heat




Heat added to a substance without a rise in temperature is called


Ans: Latent Heat




Heat added to refrigerant in a vapor state after the evaporation

process is called


Ans: Superheat




A scroll compressor moved refrigerant by means of


Ans: Involute spirals

,2 | Page

The movement of heat by way of fluid is called


Ans: Convection




The movement of heat through a solid object is called


Ans: Conduction




The standard unit for measuring the quantity of heat in a substance


Ans: British Thermal Unit




A refrigerant gives up heat when it


Ans: Condenses




Why must refrigerant in the suction line be slightly warmer than the

saturation temperature?


Ans: Prevent liquid slugging of compressor

, 3 | Page

It is desirable for refrigerant in the suction line to be slightly

superheated in order to


Ans: Insure liquid refrigerant does not enter the compressor




A mechanical shaft seal is necessary on


Ans: Semi-hermetic compressor




Liquid slugging is


Ans: Liquid refrigerant in the compressor clearance space




The clearance space in a reciprocating compressor


Ans: Varies depending on compressor speed




Which of the following types of air conditioning compressors is most

energy efficient


Ans: Centrifugal
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HVAC Air Condition Esco

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Uploaded on
February 23, 2025
Number of pages
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Written in
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