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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 60% RH
20°C DBT and 60% RH
26°C DBT and 50% RH
20°C DBT and 50% RH

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Same
Higher
Lower
None of these

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Ineffective refrigeration
Corrosion of whole system
Freezing automatic regulating valve
High power consumption

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

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

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

620 kJ/min
210 kJ/min
21 kJ/min
420 kJ/min

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Expansion valve
Condenser
Evaporator
Compressor

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MORE MCQ ON Refrigeration and Air Conditioning

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