Heat Transfer A perfect black body is a perfect __________ of radiation absorber emitter Both emitter & absorber none of the listed here absorber emitter Both emitter & absorber none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is > 1 < 1 > 5 1 > 1 < 1 > 5 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for Low pressure drop Large temperature differentials Less corrosion of tubes High heat transfer co-efficient Low pressure drop Large temperature differentials Less corrosion of tubes High heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Minimum Zero Infinity Maximum Minimum Zero Infinity Maximum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A diathermaneous substance __________ the thermal radiation completely. None of these Absorbs Reflects Transmits None of these Absorbs Reflects Transmits ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Painting the surface black Roughening the surface Giving the surface a mirror finish Painting the surface white (with aluminium paint) Painting the surface black Roughening the surface Giving the surface a mirror finish Painting the surface white (with aluminium paint) ANSWER DOWNLOAD EXAMIANS APP
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