Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Grashoff Prandtl & Grashoff Reynolds Both A & B Grashoff Prandtl & Grashoff Reynolds Both A & B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, Nst = f/2, is the __________ analogy. None of these Reynolds Prandtl Colburn None of these Reynolds Prandtl Colburn ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Black liquor generated during paper manufacture is concentrated in a single effect evaporator multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser multiple effect evaporator single effect evaporator multiple effect evaporators followed by a crystalliser single effect evaporator followed by a crystalliser multiple effect evaporator ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has maximum thermal conductivity? Coal Tar Nitrogen Iron Coal Tar Nitrogen Iron 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 In Joule's experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms⁻². Neglecting the heat capacity of agitator, the temperature of water (in °C) is 40.5 25 26.8 34.4 40.5 25 26.8 34.4 ANSWER DOWNLOAD EXAMIANS APP
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