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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant total heat lines
Constant entropy lines
Constant temperature lines
Constant pressure lines

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

None of these
(Actual C.O.P.) /(Theoretical C.O.P.)
(Actual C.O.P.) × (Theoretical C.O.P.)
(Theoretical C.O.P.)/ (Actual C.O.P.)

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

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

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Refrigeration and Air Conditioning
Ammonia is

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

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

noisy operation
very little power consumption
quiet operation
cooling below 0°C

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

Soap and water
Halide torch
All of these
Sulphur sticks

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MORE MCQ ON Refrigeration and Air Conditioning

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