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Heat and Mass Transfer

Heat and Mass Transfer
The heat of sun reaches to us according to

Radiation
Conduction
Convection
None of these

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Heat and Mass Transfer
A non-dimensional number generally associated with natural convection heat transfer is

Weber number
Grashoff number
Prandtl number
Nusselt number

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Heat and Mass Transfer
Thermal conductivity of water in general with rise in temperature

Decreases
May increase or decrease depending on temperature
Increases
Remain constant

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Heat and Mass Transfer
Thermal conductivity of water _________ with rise in temperature.

Remain same
May increase or decrease depending upon temperature
Decreases
Increases

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Heat and Mass Transfer
The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to

Grashoff number
Biot number
Peclet number
Stanton number

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Heat and Mass Transfer
Fourier's law of heat conduction gives the heat flow for

Two dimensional cases only
Irregular surfaces
Nonuniform temperature surfaces
One dimensional cases only

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MORE MCQ ON Heat and Mass Transfer

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