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HEAT TRANSFER

Heat Transfer
With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer

Remains unaffected
Decreases
Increases exponentially
Increases

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Heat Transfer
Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

Buoyancy of the bubbles produced at active nucleation site
None of these
Temperature gradient produced due to density difference
Existence of thermal boundary layer

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

1
Between 1 & 2
< 1
> 1

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Heat Transfer
The energy radiated from a surface Q at absolute temperature T is related as

None of these
Q ∝ T³
Q ∝ T⁴
Q ∝ T²

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Heat Transfer
Viscous & heat sensitive liquids are concentrated in __________ evaporators.

None of these
Open pan
Long tube
Agitated film

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