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Heat Transfer

Heat Transfer
The ratio of momentum diffusivity to thermal diffusivity is the __________ number.

Nusselt
Stanton
Prandtl
Grashoff

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Heat Transfer
Value of Nusselt number [Nu = (hD/k)] for the heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is

2
10
100
0.5

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Heat Transfer
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)

d
d1.5
√d
d2

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Heat Transfer
Mechanical recompression evaporation is used in the production of

Distilled water
Alcohol
Salt
Fruits jam

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Heat Transfer
'Duhring's plot' is of use in

Leaching
Evaporation
Absorption
Extractive distillation

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Heat Transfer
Prandtl number for most of dry gases is about

0.72
150
70
0.001

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