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Heat Transfer

Heat Transfer
Evaporator tubes are generally

Random
Vertical
Horizontal
Inclined

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Heat Transfer
The most conducive surface for dropwise condensation to occur is the __________ surface.

Smooth
Coated
Glazed & polished
Oily

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Heat Transfer
The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy.

Prandtl
None of these
Colburn
Reynolds

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Heat Transfer
The critical radius 'r' of insulation on a pipe is given by

r = 2k/h
r = h/k
r = k/h
r = k/2h

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Heat Transfer
Convective heat transfer, in which heat is transferred by movement of warmed matter is described by

Fourier's law
Newton's law of cooling
Fick's law
None of these

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Heat Transfer
_______ paint has the maximum absorption coefficient.

Grey
Yellow
Black
White

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