Heat Transfer Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. 10 to 100 100 to 1000 1 to 100 0.5 to 50 10 to 100 100 to 1000 1 to 100 0.5 to 50 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it Decreases the pressure drop Decreases the outlet temperature of cooling medium None of these Increases the overall heat transfer coefficient Decreases the pressure drop Decreases the outlet temperature of cooling medium None of these Increases the overall heat transfer coefficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Reynolds Prandtl & Grashoff Grashoff Both A & B Reynolds Prandtl & Grashoff Grashoff Both A & B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The units of resistance to heat transfer is W⁻¹m²K J.m⁻².K⁻¹ W.m⁻².K⁻¹ J.m⁻¹.K⁻¹ W⁻¹m²K J.m⁻².K⁻¹ W.m⁻².K⁻¹ J.m⁻¹.K⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fruit juice (a heat sensitive material) can be concentrated in a __________ evaporator. None of these High pressure Falling film Long tube None of these High pressure Falling film Long tube 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 5 minutes 10 minutes 20 minutes 40 minutes 5 minutes 10 minutes 20 minutes ANSWER DOWNLOAD EXAMIANS APP
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