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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Pressure of water vapour is given by

None of these
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
0.622 Pv/ (Pb - Pv)

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Liquid pump
Absorber and generator
Generator
Absorber, generator and liquid pump

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes gas
Above which liquid becomes solid
Above which liquid will remain liquid
Above which liquid becomes vapour

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Dew point temperature
Dry bulb temperature
Relative humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Compressor
Evaporator
Expansion valve
Condenser

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Very little work input
Maximum work input
Nearly same work input as for vapour compression cycle
Zero work input

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