Heat Transfer Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid for fluids in laminar flow when Grashhoff number is very important for fluids in tubulent flow none of the listed here for fluids in laminar flow when Grashhoff number is very important for fluids in tubulent flow none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is 0.2 0.8 0.4 0.6 0.2 0.8 0.4 0.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. Geometric Logarithmic Arithmetic Either A, B or C Geometric Logarithmic Arithmetic Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Forced convection and conduction Free and forced convection Conduction only Forced convection only Forced convection and conduction Free and forced convection Conduction only Forced convection only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In SI units, fouling factor is expressed in m²°K/W m°K/W W/m²°K m²°K m²°K/W m°K/W W/m²°K m²°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Enhancing the fluid pumping rate Keeping the heat transfer surface clean None of these Increasing the tube length Enhancing the fluid pumping rate Keeping the heat transfer surface clean None of these Increasing the tube length ANSWER DOWNLOAD EXAMIANS APP
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