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HEAT TRANSFER

Heat Transfer
Which is the most suitable for the concentration of foamy & frothy liquors?

None of these
Agitated film evaporator
Long tube vertical evaporator
Open pan evaporator

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Heat Transfer
Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.

Boiling point (at the same pressure)
Density
Viscosity
Thermal conductivity

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Heat Transfer
Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is

Thin walled having the value of Ao Ai/< 2
Having the value of Ao/Ai > 2
Both B and C
Thick walled

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Heat Transfer
In Fourier's law, the proportionality constant is called the

Heat transfer co-efficient
Thermal conductivity
Stefan-Boltzman constant
Thermal diffusivity

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Heat Transfer
__________ heat exchanger is used for chilling oil to be dewaxed.

Fixed tube
U-tube
Double pipe
Floating head

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