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Study MCQ
Refrigeration and Air Conditioning Technician
DIRECT EXPANSION AIR CONDITIONING
Set 2
Set 2
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Q9926
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Which is circulated in VRV system for cooling cycle?
A
Water
B
Cooled air
C
Cooled brine
D
Liquid refrigerant
Q9927
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What is the expansion of HVAC?
A
Heavy Vehicle Air Conditioning
B
Heating, Vibration, Auto Correction
C
Heating, Ventilation Automatic Control
D
Heating, Ventilation and Air Conditioning
Q9928
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Which valve is used for gas charging and pressure checking in central AC plants?
A
Safety valve
B
Service valve
C
Solenoid valve
D
Non return valve
Q9929
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What is the value of absolute vacuum in millimeters of mercury?
A
-76
B
-760
C
-14.7
D
-10.33
Q9930
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Which compressor is used only in central AC systems?
A
Scroll
B
Screw
C
Rotary
D
Centrifugal
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