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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Expansion
Compression
Evaporation

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

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

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

Halide torch
Soap and water
All of these
Sulphur sticks

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Refrigeration and Air Conditioning
The optimum effective temperature for human comfort is

Not dependent on season
Higher in winter than in summer
Same in winter and summer
Lower in winter than in summer

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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

0.2
6
5
1.2

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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.

Expansion valve
Condenser
Compressor
Evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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