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Heat Transfer

Heat Transfer
Open pan evaporators are preferred to be used, when the solution to be concentrated is

Scaling
Salty
Corrosive
Highly viscous

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Heat Transfer
Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface?

Interfacial tension
Liquid viscosity
Liquid density
Hot surface temperature

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Heat Transfer
Dietus-Boelter equation cannot be used for molten metals mainly due to its very low

Prandtl number
Grashoff number
thermal conductivity
viscosity

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Heat Transfer
Heat transfer by __________ may not necessarily require the presence of a medium

natural convection
none of the listed here
coduction
radiation

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Heat Transfer
An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

boiler
recuperator
heat exchanger
regenerator

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Heat Transfer
Which of the following is unimportant in forced convection ?

Prandtl number
Grashhoff number
Reynolds number
none of the listed here

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