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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
Heat exchanger tubes are never made of

Copper
Plain carbon steel
Lead
Stainless steel

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Heat Transfer
The Stefan-Boltzman constant depends on the

Surface
Temperature
None of these
Medium

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Heat Transfer
In SI units, thermal conductivity is expressed in

Watt/m². °K
Watt/m.°K
Watt/m4. °K
Watt/m². °K

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Heat Transfer
Steam economy in case of a triple effect evaporator will be

Between 0 and 1
1
> 1
< 1

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

all of the listed here
vapour binding
film boiling
nucleate boiling

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MORE MCQ ON Heat Transfer

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