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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Ammonia is

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

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

Halide torch
Sulphur sticks
Soap and water
All of these

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

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

Less than 2 kg
There is no such consideration
More than 10 kg
More than or equal to 3.65 kg

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Degree of saturation
Humidity ratio
Absolute humidity
Relative humidity

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Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Condenser, absorber and separator (rectifier)
Evaporator
Condenser
Absorber

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MORE MCQ ON Refrigeration and Air Conditioning

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