Heat Transfer Viscosity of gases __________ with increase in temperature. Increase slowly Decrease slowly Increase very rapidly Remain unaffected Increase slowly Decrease slowly Increase very rapidly Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number is the reciprocal of Thermal diffusivity x Momentum Mass diffusivity x Momentum diffusivity Thermal diffusivity x Mass diffusivity Thermal diffusivity/Momentum diffusivity Thermal diffusivity x Momentum Mass diffusivity x Momentum diffusivity Thermal diffusivity x Mass diffusivity Thermal diffusivity/Momentum diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the All of these Nature of heating surface and distribution of bubbles Viscosity of water Surface tension of water All of these Nature of heating surface and distribution of bubbles Viscosity of water Surface tension of water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? None of these At high fluid velocity When fluid flows past a smooth surface At low velocity None of these At high fluid velocity When fluid flows past a smooth surface At low velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Trap is used to remove __________ from steam pipe lines. Condensate Steam None of these Non-condensables Condensate Steam None of these Non-condensables 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. Either A, B or C Geometric Logarithmic Arithmetic Either A, B or C Geometric Logarithmic Arithmetic ANSWER DOWNLOAD EXAMIANS APP
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