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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The freezing point of R-12 is

-107.7°C
-95.2°C
-86.6°C
-135.8°C

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Gas liquefaction
Air conditioning
Commercial refrigerators

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Ammonia vapour goes into solution
Weak solution mixes with strong solution
Ammonia vapour is driven out of solution
Lithium bromide mixes with ammonia

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Compressor
Expansion valve
Evaporator
Condenser

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Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Aluminium
Copper
Brass
Steel

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is

Dry vapour
High pressure saturated liquid
Very wet vapour
Wet vapour

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MORE MCQ ON Refrigeration and Air Conditioning

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