R-12 is generally preferred over R-22 in deep freezers since

A)
it has low operating pressures
B)
it gives higher coefficient of performance
C)
it is miscible with oil over large range of temperatures
D)
All of the above

Correct Answer : Option (C) :   it is miscible with oil over large range of temperatures

Recently Updated in Heat Transfer, Refrigeration and Air Conditioning Questions
The value of the wave length for maximum emissive power is given by
A)
Wein's law
B)
Stefan's law
C)
Planck's law
D)
Kirchhoff's law

Correct Answer :   Wein's law

Emissivity of a body will be equal to its absorptivity at all temperatures.
A)
Yes
B)
No
C)
Can Not Say
D)
None of the above

Correct Answer :   Yes

During dehumidification process, __________ remains constant.
A)
specific humidity
B)
dry bulb temperature
C)
relative humidity
D)
wet bulb temperature

Correct Answer :   dry bulb temperature

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