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Heat Transfer

Heat Transfer
What is the steam economy in case of a single effect evaporator system?

>1
< 1
0.1
1

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Heat Transfer
Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is

< 1
1
> 5
> 1

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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

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

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

Leaching
Absorption
Evaporation
Extractive distillation

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Heat Transfer
Boiling point elevation of an ideal solution

Increases rapidly with temperature rise
Decreases rapidly with temperature rise
Both B and C
In independent of pressure

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Heat Transfer
The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is

Stanton number
Nusselt number
Schmidt number
Sherwood number

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MORE MCQ ON Heat Transfer

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