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Heat Transfer

Heat Transfer
For a multipass shell and tube heat exchanger, the LMTD correction factor is always

Between 1 & 2
1
> 1
< 1

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Heat Transfer
Radiator of an automobile engine is a __________ type of heat exchanger.

Cross-current
Counter-current
Direct contact
Co-current

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Heat Transfer
The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the

Evaporators operate under vacuum
None of these
Solution has an elevation of boiling point
Evaporators opreate at atmospheric pressure

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Heat Transfer
Stefan-Boltzman law applies to __________ body

grey
black
white
None of the listed here

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Heat Transfer
The unit of conductance in SI unit is

W/°K
W/m°K
W/m²
W/m

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Heat Transfer
The thermal boundary layer at NPr > 1

Is thicker than hydrodynamic boundary layer
And the hydrodynamic boundary layer are identical
Disappears
Is thinner than hydrodynamic boundary layer

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