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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Is more than 1
Is less than 1
Depends upon the make
Is equal to 1

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

None of these
Between the saturated liquid line and saturated vapour line
To the left of saturated liquid line
To the right of saturated liquid line

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Refrigeration and Air Conditioning
The humidification process, on the psychrometric chart is shown by

Curved line
Horizontal line
Inclined line
Vertical line

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Refrigeration and Air Conditioning
Ammonia is

Highly toxic and inflammable
Toxic and non-inflammable
Non-inflammable
Non-toxic

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

3.5/C.O.P.
3.5 × C.O.P.
None of these
O.P/3.5

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Using reagents
Smelling
Halide torch which on detection produces greenish flame lighting
Sulphur sticks which on detection gives white smoke

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