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Thermal conductivity of glass-wool varies from sample to sample because of variation in

Q.  
Thermal conductivity of glass-wool varies from sample to sample because of variation in


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Answer :   Option: D


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More Questions Heat and Mass Transfer:

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What is Nusselt number?

A. Cp µ /k

B. hD/k

C. K /Cp µ

D. None of these


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Heat transfer occurs by natural convection because change in temperature causes difference in

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B. density

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The Grashoff number is defined as the ratio of the

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Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the

A. existence of thermal boundary layer

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C. buoyancy of the bubbles produced at active nucleation site

D. none of these


Answer & Explanation
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