Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers of a fluid flowing over a heated plate will be identical? 1 < 1 None of these > 1 1 < 1 None of these > 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Peclet number (Pe) is given by Pe = Re.Pr Pe = Pr/Re Pe = Nu.Re Pe = Re/Pr Pe = Re.Pr Pe = Pr/Re Pe = Nu.Re Pe = Re/Pr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m² and the overall heat transfer co-efficient to the liquid is 1500 W/m².°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be 15 min 22 min 44 min 51 min 15 min 22 min 44 min 51 min ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a backward feed multiple effect evaporator No pumps are required between successive effects Feed flows from low pressure to high pressure None of these Feed is introduced in the first effect No pumps are required between successive effects Feed flows from low pressure to high pressure None of these Feed is introduced in the first effect ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Infinity Minimum Maximum Zero Infinity Minimum Maximum Zero ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy. Prandtl Reynolds Colburn None of these Prandtl Reynolds Colburn None of these ANSWER DOWNLOAD EXAMIANS APP
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