Heat Transfer Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) d2 d √d d1.5 d2 d √d d1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Both solids & liquids Gases Solids Liquids Both solids & liquids Gases Solids Liquids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which characteristic of a fluid is not important in deciding its route in a shell and tube heat exchanger? Corrosiveness None of these Fouling characteristic Viscosity Corrosiveness None of these Fouling characteristic Viscosity 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. Backward feed High pressure None of these Vacuum Backward feed High pressure None of these Vacuum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient Increases May increase or decrease; depends on the feed Decreases Is not affected Increases May increase or decrease; depends on the feed Decreases Is not affected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Surface area to volume Perimeter to surface area Volume to surface area Surface area to perimeter Surface area to volume Perimeter to surface area Volume to surface area Surface area to perimeter ANSWER DOWNLOAD EXAMIANS APP
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