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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

2 kW
3 kW
1 kW
4 kW

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Brayton cycle
Reversed Carnot cycle
Reversed Joule cycle
Reversed Otto cycle

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

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

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

None of these
Decreases
Increases
Remains constant

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Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Odourless
Non-flammable
All of the listed here

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is saturated liquid

After passing through the expansion throttle valve
After passing through the condenser
Before entering the expansion valve
Before passing through the condenser

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MORE MCQ ON Refrigeration and Air Conditioning

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