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Heat Transfer

Heat Transfer
Agitated film evaporator is suitable for concentrating __________ liquids.

Very thin
Corrosive
Viscous
Foaming

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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.

Thrice
Four times
Twice
Once

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Heat Transfer
_______ paint has the maximum absorption coefficient.

Grey
Yellow
White
Black

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Heat Transfer
In an extended surface heat exchanger, fluid having lower co-efficient

Can flow either inside or outside the tubes
Flows through the tube
Should not be used as it gives very high pressure drop
Flows outside the tubes

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Heat Transfer
Vibrations in the tubes of a shell and tube heat exchanger is induced due to the

Flow of fluid on the tube and shell sides
All of these
Vibrations transmitted through piping and/or supports due to external reasons
Oscillations in the flow of shell/tube sides fluid

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Heat Transfer
Choose the correct equation.

Nu = (Re)(Pr)
Nu = (Pr)(St)
Nu = (Re) (Pr) (Gz)
Nu = (Re) (Pr) (St)

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