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Refrigeration and Air Conditioning Technician
CONDENSER EXPANSION VALVE AND EVAPORATOR
Set 5
Set 5
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Q9900
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Which gas is used to flush out the coils of air cooled condenser?
A
Dry nitrogen
B
Pure dry air
C
Oxygen
D
kaksr
Q9901
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Which application uses the capillary tube expansion device?
A
Domestic RAC units
B
Industrial ice plants
C
Commercial AC plants
D
Hospital IAQ systems
Q9902
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Which expansion valve is suitable for constant load operation?
A
King valve
B
Relief valve
C
Low side float valve
D
Automatic expansion valve
Q9903
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What is the physical change of refrigerant in evaporator?
A
Solid to liquid
B
Vapour to solid
C
Liquid to vapour
D
Vapour to liquid
Q9904
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What is the process of accumulation of ice on the surface of evaporator?
A
Frosting
B
Defrosting
C
Evacuating
D
Melting of frost
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