Film coefficient is defined as the ratio of

A)
thickness of film of fluid to the thermal conductivity
B)
thermal conductivity to the equivalent thickness of the film of fluid
C)
thickness of film of fluid to the temperature drop through the films of fluids
D)
temperature drop through the films of fluids to the thickness of film of fluids

Correct Answer : Option (B) :   thermal conductivity to the equivalent thickness of the film of fluid

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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