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Heat Transfer

Heat Transfer
In forced convection, the heat transfer depends on

mainly Gr
Re, Pr
none of the listed here
Re, Gr

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Heat Transfer
Planck's distribution law is valid for __________ bodies

white
black
all of the listed here
coloured

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Heat Transfer
Double pipe heat exchangers are preferably useful, when

Overall heat transfer co-efficient is very high
A corrosive liquid is to be heated
High viscosity liquid is to be cooled
Requirement of heat transfer area is low

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Heat Transfer
Use of transverse baffles in a shell and tube heat exchanger is done to increase the

Rate of heat transfer
Flow velocity
All of these
Turbulence of shell side fluid

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Heat Transfer
Which area is used in case of heat flow by conduction through a cylinder ?

Geometric mean area
None of the listed here
Arithmetic mean area
Logarithmic mean area

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Heat Transfer
jH factor for heat transfer is not a function of the __________ number.

Nusselt
Both B & C
Reynolds
Grashoff

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