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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Higher than
None of these
Same as
Lower than

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

O.P remains unaltered
Increases C.O.P
Other factors decide C.O.P
Decreases C.O.P

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

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

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Joule cycle
Reversed Otto cycle
Reversed Carnot cycle
Reversed Rankine cycle

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Zero
As low as possible (3 to 11°C)
Any value
High, of the order of 25°

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Toxic
Nontoxic and non-inflammable
Non-inflammable and toxic
Inflammable

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MORE MCQ ON Refrigeration and Air Conditioning

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