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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

5
6
0.2
1.2

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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 Otto cycle
Reversed Joule cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 1 minute
In 12 hours
In 1 hour
In 24 hours

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Refrigeration and Air Conditioning
During heating and humidification, the final relative humidity of air

Is higher than that of the entering air
Can be lower or higher than that of the entering air
None of the listed here
Is lower than that of the entering air

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Equal
Smaller/bigger depending on capacity
Bigger
Smaller

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.1
0.25
0.5
0.75

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MORE MCQ ON Refrigeration and Air Conditioning

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