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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
None of these
Reversed Carnot cycle
Bell Coleman cycle

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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
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and condenser
Expansion valve and evaporator
Compressor and evaporator
Condenser and expansion valve

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser
Before entering the expansion valve

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.1
0.5
0.25
0.75

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

6
0.2
5
1.2

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