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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

None of these
Carnot cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

5 to 7 TR
1 to 3 TR
3 to 5 TR
0.1 to 0.3 TR

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Refrigeration and Air Conditioning
The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

Refrigerating efficiency
Coefficient of performance of heat pump
Coefficient of performance of refrigeration
Relative coefficient of performance

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Wet vapour region
Superheated vapour region
None of the listed here
Sub-cooled liquid region

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Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m/hK
m²/h
m/h
m²/hK

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MORE MCQ ON Refrigeration and Air Conditioning

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