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Heat Transfer

Heat Transfer
1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C.

4.88
1.49
1
None of these

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Heat Transfer
A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun?

Black paint
Grey paint
White paint
Yellow paint

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Heat Transfer
Heat transfer rate per unit area is called

heat flux
thermal conductivity
heat transfer co-efficient
thermal diffusivity

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Heat Transfer
For evaporation of viscous solution in a multiple effect evaporator, the prefered feeding scheme is

Forward
Parallel
None of these
Backward

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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
Triangular pitch
None of these

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Heat Transfer
Stefan-Boltzman law applies to __________ body

None of the listed here
grey
black
white

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