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Heat Transfer

Heat Transfer
Viscous & heat sensitive liquids are concentrated in __________ evaporators.

None of these
Long tube
Open pan
Agitated film

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Heat Transfer
Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.

Stantan
Reynolds
Grashoff
Biot

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Heat Transfer
(Cp . μ)/K is termed as the __________ number.

Nusselt
Prandtl
Grashoff
Stanton

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Heat Transfer
In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased.

Liquor-film co-efficient
Velocity of circulation
Neither A and B
Both A and B

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Heat Transfer
The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is

Stanton number
Schmidt number
Nusselt number
Sherwood number

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Heat Transfer
Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer.

Prandtl & Grashoff
Both A & B
Grashoff
Reynolds

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