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Heat Transfer

Heat Transfer
Reynold's analogy states that

Nst α NRe
NRe α f
NNu α f
Nst α f

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Heat Transfer
Heat transfer by __________ may not necessarily require the presence of a medium

natural convection
radiation
coduction
none of the listed here

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Heat Transfer
Which is the most suitable for cold viscous feed?

Mixed feed
Forward feed
Parallel feed
Backward feed

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Heat Transfer
The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law.

Stefan-Boltzman
Wien's displacement
Kirchoffs
Planck's

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Heat Transfer
Kg of liquid evaporated per hour in an evaporator is defined as its

Economy
None of these
Steam load
Capacity

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Heat Transfer
Dropwise condensation occurs on __________ surfaces

smooth clean
contaminated cooling
clean and dirt free
polished

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