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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The power per tonne of refrigeration is

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

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Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Odourless
Colourless
Non-flammable

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Refrigeration and Air Conditioning
Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator.

None of these
Increase
Reduce
Equalize

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Refrigeration and Air Conditioning
In a reversed Brayton cycle, the heat is absorbed by the air during

Isentropic compression process
Constant pressure cooling process
Isentropic expansion process
Constant pressure expansion process

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

quiet operation
noisy operation
cooling below 0°C
very little power consumption

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Sulphur dioxide
Carbon dioxide
R-12
Lithium bromide

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