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When warm and cold liquids are mixed, the heat transfer is mainly by

Q.  
When warm and cold liquids are mixed, the heat transfer is mainly by


Answer & Explanation

Answer :   Option: B


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More Questions Heat and Mass Transfer:

Q.  
The temperature difference between the two surfaces of a plate is maintained at 29.8°C with a heat transfer rate of 0.1198 kW/m2. Find the thermal conductivity of the plate assuming its thickness as 0.299 m

A. 0.12 W/mK

B. 12 W/mK

C. 1.2 W/mK

D. 120W/mK


Answer & Explanation

Q.  
Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by

A. eddies current

B. conduction

C. Convection

D. none of these


Answer & Explanation

Q.  
Nusselt number is the ratio of the

A. temperature gradient of the wall to that across the entire pipe

B. temperature difference to the temperature gradient at the wall

C. heat flux at the wall to that across the entire pipe

D. none of these


Answer & Explanation

Q.  
If heat transfer rate varies with the time, it is termed as

A. forced convection

B. steady state conduction

C. monochromatic radiation

D. none of these


Answer & Explanation
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