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 Vacuum High pressure None of these Backward feed Vacuum High pressure None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Decreases Increases May increase or decrease ; depends on the material Remains constant Decreases Increases May increase or decrease ; depends on the material Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The value of Stefan-Boltazman constant in SI unit is 5.6697 x 10-8kcal/m² . °K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8kcal/m². °K4 0.1714 x 10-8W/m².°K4 5.6697 x 10-8kcal/m² . °K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8kcal/m². °K4 0.1714 x 10-8W/m².°K4 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l08 3 x l012 3 x l05 3 x l010 3 x l08 3 x l012 3 x l05 3 x l010 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very low film co-efficient none of the listed here high temperature high pressure low film co-efficient none of the listed here high temperature high pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Black liquor generated during paper manufacture is concentrated in a single effect evaporator multiple effect evaporator multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser single effect evaporator multiple effect evaporator multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS