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Heat Transfer

Heat Transfer
(NRe.NPr)(D/L) is called the __________ number

Graetz
None of these
Peclet
Stanton

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Heat Transfer
In a forward feed multiple effect, the pressure build up will be

highest at the outlet of the last effect
least at the outlet of the last effect
highest at the inlet of the last effect
least at the inlet of the first effect

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Heat Transfer
Air is best heated with steam in a heat exchanger of

double pipe type with fin on steam side
shell and tube type
double pipe type with fin on air side
plate type

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Heat Transfer
Increasing the liquor level in the evaporator results in the

decreased effect of hydrostatic head
increased true temperature drop
decreased capacity
increase in liquor film co-efficient

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Heat Transfer
The steam ejector is used to

Create vacuum
Remove condensate from the steam pipelines
Superheat the steam
None of these

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Heat Transfer
In the free convection regime of pool boiling, the heat flux is proportional to

Δt2
Δt1/2
Δt
Δt5/4

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