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Heat and Mass Transfer

Heat and Mass Transfer
Stefan Boltzmann law is applicable for heat transfer by

Conduction
Convection
Radiation
Conduction and radiation combined

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Heat and Mass Transfer
Total emissivity of polished silver compared to black body is

Higher
Same
Very much lower
More or less same

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Heat and Mass Transfer
Temperature of steam at around 540°C can be measured by

Thermometer
Thermistor
None of these
Thermocouple

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Heat and Mass Transfer
The energy distribution of an ideal reflector at higher temperatures is largely in the range of

Shorter wavelength
Longer wavelength
Wavelength has nothing to do with it
Remain same at all wavelengths

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Heat and Mass Transfer
Unit of thermal conductivity in S.I. units is

W/m °K
J/m °K sec
J/m² sec
Option (B) and (C) above

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Heat and Mass Transfer
The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to

Grashoff number
Biot number
Stanton number
Peclet number

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MORE MCQ ON Heat and Mass Transfer

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