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Heat and Mass Transfer

Heat and Mass Transfer
The rate of energy transferred by convection to that by conduction is called

Nusselt number
Peclet number
Stanton number
Biot number

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Heat and Mass Transfer
In a shell and tube heat exchanger, baffles are provided on the shell side to

Prevent stagnation of shell side fluid
All of these
Improve heat transfer
Provide support for tubes

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Heat and Mass Transfer
According to Stefan's law, the total radiation from a black body per second per unit area is proportional to

T
T5
Absolute temperature
T2

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Heat and Mass Transfer
The critical temperature is the temperature

Below which a gas is always liquefied
Above which a gas may explode
Above which a gas will never liquefied
Below which a gas does not obey gas laws

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Heat and Mass Transfer
Pick up the wrong case. Heat flowing from one side to other depends directly on

Thickness
Face area
Time
Temperature difference

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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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MORE MCQ ON Heat and Mass Transfer

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