Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Forced convection and conduction Free and forced convection Forced convection only Conduction only Forced convection and conduction Free and forced convection Forced convection only Conduction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is Nu = Gz Nu = 2Gz0.5 Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz Nu = Gz Nu = 2Gz0.5 Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is > 2 1.5 0.5 1 > 2 1.5 0.5 1 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 High pressure Backward feed None of these Vacuum High pressure Backward feed None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ 1/t Independent of 't' ∝ t ∝ √t ∝ 1/t Independent of 't' ∝ t ∝ √t ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F ANSWER DOWNLOAD EXAMIANS APP
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