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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

3 to 5 TR
0.1 to 0.3 TR
5 to 7 TR
1 to 3 TR

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

None of these
Increased to a value above its critical temperature
Reduced to a value below its critical temperature
Equal to critical temperature

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Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
None of these
Reversed Carnot cycle
Bell Coleman cycle

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Air conditioning
Gas liquefaction
Commercial refrigerators

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

High side float valve
Automatic expansion valve
Low side float valve
Thermostatic expansion valve

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

3.5 × C.O.P.
3.5/C.O.P.
None of these
O.P/3.5

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