Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Grashoff Prandtl & Grashoff Both A & B Reynolds Grashoff Prandtl & Grashoff Both A & B Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. highly turbulent None of the listed here laminar transition highly turbulent None of the listed here laminar transition ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Corrosiveness of steam condensate is due to the presence of CO₂ Both A & B Neither A nor B Dissolved O₂ CO₂ Both A & B Neither A nor B Dissolved O₂ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is 287 W/m².K 894W/m².K 1200W/m².K 333W/m².K 287 W/m².K 894W/m².K 1200W/m².K 333W/m².K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of crystallisation does not depend upon the 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 Extent of supersaturation Number and active surface area of the crystals ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials ANSWER DOWNLOAD EXAMIANS APP
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