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Heat Transfer

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
The steam ejector is used to

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

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Heat Transfer
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has

Higher steam economy
Higher solute concentration in the product
Lower steam economy
Lower heat transfer area

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Heat Transfer
While the total emissivity of a perfect black body is unity, the same for a real body is

0
>1
between 0 and 1
1

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Heat Transfer
The unit of conductance in SI unit is

W/m
W/m°K
W/°K
W/m²

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Heat Transfer
The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.

0.38-0.78
100-1000
0.5-50
5-50

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