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Heat Transfer

Heat Transfer
Open pan evaporators are preferred to be used, when the solution to be concentrated is

Salty
Corrosive
Highly viscous
Scaling

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Heat Transfer
Which of the following is directly concerned with the heat transfer?

Euler number
Sherwood number
Strouhal number
Grashoff number

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Heat Transfer
Film boiling occurs at __________ pressure.

very high
negative
none of the listed here
atmospheric

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Heat Transfer
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the

None of these
Baffle spacing & shell diameter
Viscosity, density & mass velocity of shell side fluid
Tube diameter & pitch

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Heat Transfer
Which of the following has the lowest overall heat transfer co-efficient?

Water
Dowtherm
Air
Molten sodium

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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
Once
Four times
Twice

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