HVAC EXCELLENCE TEST EXAM 2026 ACTUAL
COMPLETE REAL VERIFIED EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
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A refrigerant gives up heat when it; - Answer-it condenses
Why must refrigerant in the suction line be slightly warmer
than the saturation temperature? - Answer-prevent liquid
slugging of the compressor.
It is desirable for refrigerant in the suction line to be
slightly superheated in order to; - Answer-insure liquid
refrigerant does not enter the compressor.,
The state of the refrigerant in the suction line should be -
Answer-low pressure/ low temperature vapor
The state of the refrigerant entering the condenser is -
Answer-High Pressure/ Highly Superheated Vapor
The Evaporator - Answer-Transfers heat from the
refrigerated space to the refrigerant
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The Evaporator - Answer-Transfers heat from the
refrigerated space to the refrigerant
Which of the following is not a Thermodynamic Property of
refrigerant - Answer-Flammability
Heat which causes a change in temperature of a
substance is called - Answer-sensible heat,
Heat added to a substance without a rise in temperature;
(example: liquid refrigerant to gas) this process la called? -
Answer-latent heat
Heat added to the refrigerant in vapor state after the
evaporation process is called, - Answer-superheat
A scroll compressor moves refrigerant by means of; -
Answer-involute spirals
The movement of heat by way of fluid or is called; air -
Answer-convection
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The movement of heat through a solid object is called; -
Answer-radiation
The standard unit for measuring the quantity of heat in a
substance is - Answer-British Thermal Unit
The sequential order of steps in the vapor-compression
process are: - Answer-Compression, Condensation,
Expansion, Vaporization
If a 30 lb container of $-410A refrigerant has been stored
over night at 70 degrees F, the pressure in the cylinder
should be approximately - Answer-201 Degrees Faranheit
Fan Airflow pressures are usually measured in - Answer-
Inches of water column
Zero Psia (pounds per square inch absolute) is - Answer-a
pressure which cannot be further reduced
Zero Psig (pounds per square inch gauge) - Answer-The
same as atmospheric pressure