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Heat Transfer

Heat Transfer
Natural convection is characterised by

Grashhoff number
Peclet number
Prandtl number
Reynolds number

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Heat Transfer
The non-dimensional temperature gradient in a liquid at the wall of a pipe is the

Prandtl number
Schmidt number
Nusselt number
Heat flux

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Heat Transfer
The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

(D)-0.2
(D)1.8
(D)-1.8
(D)0.2

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Heat Transfer
For specified tube outside diameter, higher BWG means higher

cross-sectional area
none of the listed here
tube thickness
weight per unit length

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

Schmidt number
Stanton number
Nusselt number
Sherwood number

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Heat Transfer
Fourier's law of heat conduction applies to __________ surfaces.

Both A and B
Isothermal
Neither A and B
Non-isothermal

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MORE MCQ ON Heat Transfer

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