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Heat Transfer

Heat Transfer
_______ paint has the maximum absorption coefficient.

Yellow
Grey
Black
White

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Heat Transfer
Steam traps are provided in steam carrying pipelines to

none of the listed here
release excess steam pressure by bleeding steam.
remove condensate and inert gases
condense steam

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Heat Transfer
In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.

Twice
Four times
Once
Thrice

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Heat Transfer
Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface)

U₂ - U₁
U₁ - U₂
1/U₂ - 1/U₁
1/U₁ - 1/U₂

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Heat Transfer
Planck's distribution law is valid for __________ bodies

black
coloured
all of the listed here
white

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

White paint
Grey paint
Black paint
Yellow paint

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