ESCO Air Conditioning Exam | 100% Correct
Answers | Verified | Latest 2024 Version
Heat which causes a change in temperature of a substance is called - ✔✔Sensible heat
Heat added to a substance without a rise in temperature - ✔✔Latent heat
Heat added to the refrigerant in a vapor state after the evaporation process is called - ✔✔Superheat
Scroll compressor move refrigerant by - ✔✔Involute Spirals
The movement of heat by way of fluid is called - ✔✔Convection
The movement of heat by direct contact is - ✔✔Conduction
The standard unit for measuring the quantity of heat in a substance is - ✔✔BTUs
Refrigerant gives up heat when - ✔✔It condenses
Why must refrigerant in the suction line be slightly warmer than the saturation temperature? -
✔✔Prevent liquid slugging of the compressor
The state of the refrigerant in the suction line should be - ✔✔Low pressure / Low temperature vapor
The state of the refrigerant entering the condenser is - ✔✔High pressure / Highly superheated vapor
The evaporator - ✔✔Transfers heat from the refrigerated space to the refrigerant
, Which of the following is not a thermodynamic property of refrigerants - ✔✔Flammability
The sequential order of steps in the vapor compressions process are - ✔✔Compression, Condensation,
Expansion, Vaporization
If a 30 pound cylinder of reclaimed R 410 a refrigerant has been stored overnight at 70° the pressure in
the cylinder should be approximately - ✔✔201 psig
Fan airflow pressures are usually measured in - ✔✔Inches of water column
0 pounds per square inch absolute is - ✔✔A pressure which cannot be further reduced
0 pounds per square inch gauge is - ✔✔The same as atmospheric pressure
The temperature at which moisture will start to condense from the air is called - ✔✔Dew point
temperature
A compound pressure gauge measures - ✔✔Pressure and vacuum
Mechanical shaft seal is necessary on a - ✔✔Open drive compressor
Liquid slugging is - ✔✔Liquid refrigerant in the compressor clearance space
The clearance space in reciprocating compressor - ✔✔Has an effect on compressor capacity
Which of the following types of air conditioning compressor is most energy-efficient - ✔✔Scroll
Which of the following represent the right order for the functions of a condenser - ✔✔De-superheat,
Condenses, Subcools
Answers | Verified | Latest 2024 Version
Heat which causes a change in temperature of a substance is called - ✔✔Sensible heat
Heat added to a substance without a rise in temperature - ✔✔Latent heat
Heat added to the refrigerant in a vapor state after the evaporation process is called - ✔✔Superheat
Scroll compressor move refrigerant by - ✔✔Involute Spirals
The movement of heat by way of fluid is called - ✔✔Convection
The movement of heat by direct contact is - ✔✔Conduction
The standard unit for measuring the quantity of heat in a substance is - ✔✔BTUs
Refrigerant gives up heat when - ✔✔It condenses
Why must refrigerant in the suction line be slightly warmer than the saturation temperature? -
✔✔Prevent liquid slugging of the compressor
The state of the refrigerant in the suction line should be - ✔✔Low pressure / Low temperature vapor
The state of the refrigerant entering the condenser is - ✔✔High pressure / Highly superheated vapor
The evaporator - ✔✔Transfers heat from the refrigerated space to the refrigerant
, Which of the following is not a thermodynamic property of refrigerants - ✔✔Flammability
The sequential order of steps in the vapor compressions process are - ✔✔Compression, Condensation,
Expansion, Vaporization
If a 30 pound cylinder of reclaimed R 410 a refrigerant has been stored overnight at 70° the pressure in
the cylinder should be approximately - ✔✔201 psig
Fan airflow pressures are usually measured in - ✔✔Inches of water column
0 pounds per square inch absolute is - ✔✔A pressure which cannot be further reduced
0 pounds per square inch gauge is - ✔✔The same as atmospheric pressure
The temperature at which moisture will start to condense from the air is called - ✔✔Dew point
temperature
A compound pressure gauge measures - ✔✔Pressure and vacuum
Mechanical shaft seal is necessary on a - ✔✔Open drive compressor
Liquid slugging is - ✔✔Liquid refrigerant in the compressor clearance space
The clearance space in reciprocating compressor - ✔✔Has an effect on compressor capacity
Which of the following types of air conditioning compressor is most energy-efficient - ✔✔Scroll
Which of the following represent the right order for the functions of a condenser - ✔✔De-superheat,
Condenses, Subcools
