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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Chaperon equation is applicable for registration at

Triple point
Saturation point of liquid
Sublimation temperature
Saturation point of vapour

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Refrigeration and Air Conditioning
In larger industrial and commercial reciprocating compression systems, refrigerant widely used is

Carbon dioxide
Sulphur dioxide
Ammonia
R-12

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Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Wet vapour
Liquid
Saturated liquid
Sub-cooled liquid

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Refrigeration and Air Conditioning
The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

(T₂ - T₁)/T₁
T₁ / (T₂ - T₁)
(T₁ - T₂)/T₁
T₂/ (T₂ - T₁)

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Refrigeration and Air Conditioning
Refrigeration in aeroplanes usually employs the following refrigerant

Air
Freon-11
CO2
Freon-22

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Water
Aqua-ammonia
Freon
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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