Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha = 0.8hL Ha = hL Ha = 2hL Ha= 5hL Ha = 0.8hL Ha = hL Ha = 2hL Ha= 5hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of providing expansion bellows in the shell of tubular exchanger is to Impart structural strength Account for the uneven expansion of shell and tube bundles Facilitate increase of shell length, if needed Increase the heating load Impart structural strength Account for the uneven expansion of shell and tube bundles Facilitate increase of shell length, if needed Increase the heating load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number. Grashoff Condensation Brinkman Stantan Grashoff Condensation Brinkman Stantan ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Analogy between mass and heat transfer is not applicable in case of Thermal or pressure mass diffusion Viscous heating or chemical reaction Same velocity profile or equal eddy diffusivities Both B and C Thermal or pressure mass diffusion Viscous heating or chemical reaction Same velocity profile or equal eddy diffusivities Both B and C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Agitated film evaporator is suitable for concentrating __________ liquids. Corrosive Very thin Foaming Viscous Corrosive Very thin Foaming Viscous ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. Vacuum None of these Backward feed High pressure Vacuum None of these Backward feed High pressure ANSWER DOWNLOAD EXAMIANS APP
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