Page | 1
ESCO AIR CONDITIONING EXAM 2025:
REAL VERIFIED QUESTIONS & CORRECT
ANSWERS| PACK OF EXCELLENCE| THE
ULTIMATE KEY TO YOUR SUCCESS.
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 - correct
answer - Latent heat
, Page | 2
Heat added to the refrigerant in a vapor state after the
evaporation process is called - correct answer - Superheat
Scroll compressor move refrigerant by - correct answer - Involute
Spirals
The movement of heat by way of fluid is called - correct answer -
Convection
The movement of heat by direct contact is - correct answer -
Conduction
The standard unit for measuring the quantity of heat in a
substance is - correct answer - BTUs
Refrigerant gives up heat when - correct answer - It condenses
, Page | 3
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 the refrigerant entering the condenser is - correct
answer - High pressure / Highly superheated vapor
The evaporator - correct answer - Transfers heat from the
refrigerated space to the refrigerant
Which of the following is not a thermodynamic property of
refrigerants - correct answer - Flammability
The sequential order of steps in the vapor compressions process
are - correct answer - Compression, Condensation, Expansion,
Vaporization
ESCO AIR CONDITIONING EXAM 2025:
REAL VERIFIED QUESTIONS & CORRECT
ANSWERS| PACK OF EXCELLENCE| THE
ULTIMATE KEY TO YOUR SUCCESS.
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 - correct
answer - Latent heat
, Page | 2
Heat added to the refrigerant in a vapor state after the
evaporation process is called - correct answer - Superheat
Scroll compressor move refrigerant by - correct answer - Involute
Spirals
The movement of heat by way of fluid is called - correct answer -
Convection
The movement of heat by direct contact is - correct answer -
Conduction
The standard unit for measuring the quantity of heat in a
substance is - correct answer - BTUs
Refrigerant gives up heat when - correct answer - It condenses
, Page | 3
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 the refrigerant entering the condenser is - correct
answer - High pressure / Highly superheated vapor
The evaporator - correct answer - Transfers heat from the
refrigerated space to the refrigerant
Which of the following is not a thermodynamic property of
refrigerants - correct answer - Flammability
The sequential order of steps in the vapor compressions process
are - correct answer - Compression, Condensation, Expansion,
Vaporization
