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Refrigeration and Air Conditioning

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

Soap and water
Halide torch
All of these
Sulphur sticks

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Refrigeration and Air Conditioning
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

None of these
Equal to
Greater than
Less than

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Absorber and generator
Liquid pump
Absorber, generator and liquid pump
Generator

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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
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

depends on other factors
remains same
increases
decreases

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of freezing zone
Of evaporator
Of cooling medium
At which refrigerant gas becomes liquid

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MORE MCQ ON Refrigeration and Air Conditioning

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