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Heat Transfer

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

None of these
Long tube
Agitated film
Open pan

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Heat Transfer
__________ equation relates the thermal conductivity of a solid to its temperature.

Lee's
Kopp's
Kistyakowski
Antonie

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Heat Transfer
The equivalent diameter for pressure drop is __________ that for heat transfer

greater than
equal to
smaller than
None of the listed here

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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

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

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Heat Transfer
Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?

Diagonal square pitch
Square pitch
None of these
Triangular pitch

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Heat Transfer
The units of resistance to heat transfer is

J.m⁻¹.K⁻¹
J.m⁻².K⁻¹
W.m⁻².K⁻¹
W⁻¹m²K

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