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Heat Transfer

Heat Transfer
Evaporator tubes are generally

Random
Inclined
Horizontal
Vertical

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

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

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Heat Transfer
The equation, Nst = f/2, is the __________ analogy.

Colburn
Prandtl
None of these
Reynolds

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Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

520
500
400
200

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Heat Transfer
Heat exchangers operating, when the asymptotic range is reached,

Results in making part of the heating surface inactive
None of these
Results in abruptly increased velocity
Provide very large heat transfer co-efficient

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Heat Transfer
The unit of heat transfer co-efficient in SI unit is

W/m2°K
J/m°K
W/m°K
J/M2°K

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