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Heat Transfer

Heat Transfer
For what value of Prandtl number, St = f/2?

2
1
1.5
> 1

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

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

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Heat Transfer
Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law.

Kirchoffs
Stefan's
Wien's
Dalton's

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Heat Transfer
The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law.

Stefan-Boltzman's
Planck's
Wien's displacement
None of these

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Heat Transfer
Small scale evaporation is done in a

Heat exchanger
Steam jacketed kettle
Condenser
Multiple effect evaporator

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Heat Transfer
Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.

transition
highly turbulent
None of the listed here
laminar

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