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. Backward feed High pressure Vacuum None of these Backward feed High pressure Vacuum None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With the increase of temperature, the Col-burn jH factor Increases Remains unchanged Decreases May increase or decrease ; depending on temperature Increases Remains unchanged Decreases May increase or decrease ; depending on temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Among liquids, water has a comparatively high value of thermal conductivity, due to its High viscosity Low density Dense structure Partial ionisation High viscosity Low density Dense structure Partial ionisation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Passes through a maxima Decreases Increases Remains constant Passes through a maxima Decreases Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 1 and 0 1 and ? 0 and 1 0 and 0.5 1 and 0 1 and ? 0 and 1 0 and 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) K/h0 h0/K 2K/h0 h0/2K K/h0 h0/K 2K/h0 h0/2K ANSWER DOWNLOAD EXAMIANS APP
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