Practice Diffusion - GATE & ESE - ME & CH Offered by Unacademy

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Diffusion

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Question 1 of 5

Air at 1 atm is blown past the bulb of a mercury thermometer. The bulb is covered with a wick. Some amount of water is vaporized due to the heat of air. Heat and mass transfer takes place simultaneously. The latent heat of vaporization is 50 KJ/kg. If mass flux is $0.2 \mathrm{~kg} / \mathrm{m}^2-\mathrm{s} .0 .2 \mathrm{~kg} / \mathrm{m}^2-\mathrm{s}$

Then the heat flux is

$250 \frac{k J}{m^2 s}$

$4 \times 10^{-4} \frac{k J}{m^2 s}$

$10 \mathrm{~kJ} / \mathrm{m}^2 \mathrm{~s}$

$50.2 \frac{k J}{m^2 s}$

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Diffusion

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Question 1 of 5

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