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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

0.2
6
5
1.2

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

50
20
Zero
100

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Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

Horizontal and non-uniformly spaced
Vertical and uniformly spaced
Curved lines
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Lower
Higher
Same
None of these

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + C.O.P
1 - (1/C.O.P)
1 - C.O.P.
1 + (1/C.O.P)

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