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Heat Transfer

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

Corrosive
Salty
Scaling
Highly viscous

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Heat Transfer
The unit of conductance in SI unit is

W/m°K
W/m
W/m²
W/°K

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

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Heat Transfer
Film boiling occurs at __________ pressure.

negative
none of the listed here
atmospheric
very high

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Heat Transfer
With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer

Increases
Decreases
Increases exponentially
Remains unaffected

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Heat Transfer
'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

Factor of safety
Non-dimensional factor
Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient
None of these

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