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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

21 kJ/ min
840 kJ/ min
420 kJ/ min
210 kJ/ min

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Refrigeration and Air Conditioning
The pressure at the outlet of a refrigerant compressor is called

Back pressure
Critical pressure
Discharge pressure
Suction pressure

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It permits higher speeds to be used
All of these
It permits complete evaporation in the evaporator
It results in high volumetric and mechanical efficiency

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Delivery of compressor
Low pressure side near receiver
High pressure side close to receiver
Suction of compressor

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression
All of these
Enthalpy increase in compressor
Work done by compressor

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Refrigeration and Air Conditioning
As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

Higher than
Lower than
Same as
None of the listed here

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MORE MCQ ON Refrigeration and Air Conditioning

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