Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

In case of solids, the heat transfer takes place according to radiation.
A:
Correct
B:
Incorrect
C:
D:
Answer: B
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The critical radius is the insulation radius at which the resistance to heat flow is
A:
maximum
B:
minimum
C:
zero
D:
none of these
Answer: B
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During sensible cooling of air __________ decreases.
A:
wet bulb temperature
B:
relative humidity
C:
dry bulb temperature
D:
specific humidity
Answer: C
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Nusselt number (NN) is given by
A:
B:
C:
D:
Answer: A
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The subcooling in a refrigeration cycle
A:
does not alter C.O.P.
B:
increases C.O.P.
C:
decreases C.O.P.
D:
none of these
Answer: B
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