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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Aluminium
Steel
Brass
Copper

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Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

Less
Equally
Unpredictable
More

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Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Less than
None of these
Equal to
More than

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Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Dry bulb temperature
Dew point temperature
Specific humidity

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
More
More for small capacity and less for high capacity
Less

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MORE MCQ ON Refrigeration and Air Conditioning

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