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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Ammonia is

Non-toxic
Non-inflammable
Toxic and non-inflammable
Highly toxic and inflammable

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Saturated liquid
Dry saturated vapour
Wet vapour
Superheated vapour

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Equal to unity
Always less than unity
Always more than unity
Any one of the above

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-77.7°C
-135.8°C
-56.6°C
-75.2°C

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

High heat transfer rate
Low temperature at high altitudes
Higher coefficient of performance
Low weight per tonne of refrigeration

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Water at 0°C
Mixture of ice and water under equilibrium conditions
Ice at 4°C
Solid and dry ice

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MORE MCQ ON Refrigeration and Air Conditioning

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