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Heat Transfer

Heat Transfer
Temperature profile in steady state heat transfer is

hyperbolic
none of the listed here
Linear
parabolic

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Heat Transfer
According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor)

f/2
f
2f
f/4

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Heat Transfer
Graetz number is given by

mCp/kμ
kL/mCp
mCp/kL
kμ/mCp

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

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

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Heat Transfer
In forced convection, the heat transfer depends on

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

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Heat Transfer
Increasing the liquor level in the evaporator results in the

increase in liquor film co-efficient
decreased capacity
decreased effect of hydrostatic head
increased true temperature drop

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MORE MCQ ON Heat Transfer

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