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Heat Transfer

Heat Transfer
Heat flux is the time rate of heat transfer per unit

area
length
none of the listed here
volume

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Heat Transfer
The purpose of providing bleed points in the evaporator is to

Create vacuum
Admit the feed
Remove the product
Facilitate removal of non-condensable gases

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Heat Transfer
The driving potential for the crystal growth during crystallisation is the __________ of the solution.

Concentration
Viscosity
Density
Super-saturation

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Heat Transfer
As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the

none of the listed here
temperature of the body only
nature of material of body
wavelength of monochromatic radiation

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Heat Transfer
For what value of Prandtl number, St = f/2?

1.5
> 1
2
1

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Heat Transfer
For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus-Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of

6.1
1
37
1.74

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