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Heat Transfer

Heat Transfer
Economy of an evaporator is influenced by the

Number of effect
Feed temperature
Steam pressure
Both B & C

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Heat Transfer
When vaporisation takes place directly at the heating surface, it is called

all of the listed here
nucleate boiling
vapour binding
film boiling

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Heat Transfer
Prandtl and Reynold's analogies are identical for Prandtl number value of

5
0.5
1

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Heat Transfer
The ratio of velocity head to tube side return loss in case of a multipass shell and tube heat exchanger is

2
43834
4
43832

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Heat Transfer
Circulation pump is located below the evaporater to

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

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Heat Transfer
The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances.

Product
Average
Geometric mean
Sum

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