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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The superheating in a refrigeration cycle

Increases C.O.P.
None of these
Decreases C.O.P.
Does not alter C.O.P.

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Refrigeration and Air Conditioning
During sensible cooling,

Relative humidity remains constant
Specific humidity increases
Wet bulb temperature increases
Partial pressure of vapour remains constant

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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
Low side float valve
Automatic expansion valve
Thermostatic expansion valve

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

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

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

50 kcal/ hr
50 kcal/ min
80 kcal/ hr
80 kcal/ min

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Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Red
Orange
Bright green
Yellow

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MORE MCQ ON Refrigeration and Air Conditioning

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