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Heat Transfer

Heat Transfer
In forced convection, the Nusselt number is a function of

Re and Sc
Re and Gr
Re and Pr
Pr and Gr

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Heat Transfer
Choose the correct equation.

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

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Heat Transfer
In a multiple effect evaporator, the effect of boiling point elevation is to

reduce the capacity
reduce the economy
increase the economy
all of the listed here

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Heat Transfer
In SI units, fouling factor is expressed in

W/m²°K
m²°K
m²°K/W
m°K/W

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Heat Transfer
Heat flux is the time rate of heat transfer per unit

none of the listed here
length
volume
area

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Heat Transfer
Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force.

Viscous
Elastic
Inertial
None of these

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