Heat Transfer Rate of crystallisation does not depend upon the Extent of supersaturation Number and active surface area of the crystals Turbulence within the solution None of these Extent of supersaturation Number and active surface area of the crystals Turbulence within the solution None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Choose the most important factor on which the heat conducted through a wall in a unit time will depend on? Material of the wall Temperature difference between the two surfaces of the wall Area of the wall perpendicular to heat flow Thickness of the wall Material of the wall Temperature difference between the two surfaces of the wall Area of the wall perpendicular to heat flow Thickness of the wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fourier's law applies to the heat transfer by radiation conduction None of the listed here convection radiation conduction None of the listed here convection ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 40 minutes 10 minutes 5 minutes 20 minutes 40 minutes 10 minutes 5 minutes 20 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to Create vacuum None of these Superheat the steam Remove condensate from the steam pipelines Create vacuum None of these Superheat the steam Remove condensate from the steam pipelines ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m² and the overall heat transfer co-efficient to the liquid is 1500 W/m².°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be 22 min 15 min 44 min 51 min 22 min 15 min 44 min 51 min ANSWER DOWNLOAD EXAMIANS APP
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