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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Reversed Carnot cycle
None of these
Carnot cycle

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Refrigeration and Air Conditioning
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

Ammonia
Sulphur dioxide
Carbon dioxide
R-12

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Refrigeration and Air Conditioning
Where does the lowest temperature occur in a vapour compression cycle?

Condenser
Expansion valve
Evaporator
Compressor

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ min
80 kcal/ hr
50 kcal/ min
50 kcal/ hr

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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