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Heat Transfer

Heat Transfer
Reynold's analogy states that

Nst α NRe
NRe α f
Nst α f
NNu α f

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Heat Transfer
Choose the correct equation.

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

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Heat Transfer
Circulation pump is located below the evaporater to

None of these
Create more suction head
Avoid frequent priming
Avoid cavitation

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Heat Transfer
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

20.4
20.8
40.4
40.8

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Heat Transfer
jH factor for heat transfer is not a function of the __________ number.

Reynolds
Nusselt
Both B & C
Grashoff

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Heat Transfer
The equivalent diameter for pressure drop is __________ that for heat transfer

greater than
equal to
None of the listed here
smaller than

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