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Heat and Mass Transfer

Heat and Mass Transfer
The unit of Stefan Boltzmann constant is

watt/cm2 °K⁴
watt/cm3 °K
watt/cm4 °K
watt2/cm °K⁴

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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

Peclet number
Grashoff number
Stanton number
Biot number

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Heat and Mass Transfer
Which of the following is the case of heat transfer by radiation?

Cooling of parts in furnace
Blast furnace
Heating of building
Heat received by a person from fireplace

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Heat and Mass Transfer
In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.

None of these
Less
Greater
Same

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Heat and Mass Transfer
Fouling factor is used

In heat exchanger design as a safety factor
None of these
When a liquid exchanges heat with a gas
In case of Newtonian fluids

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Heat and Mass Transfer
In case of liquids and gases, the heat transfer takes place according to

Convection
None of these
Radiation
Conduction

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