Heat Transfer In a cooling tower, water becomes cool by Heat transfer to surroundings Loosing sensible heat Vaporisation due to heat loss to air Loosing latent heat Heat transfer to surroundings Loosing sensible heat Vaporisation due to heat loss to air Loosing latent heat 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 22 min 51 min 44 min 15 min 22 min 51 min 44 min 15 min ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus-Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of 6.1 1 1.74 37 6.1 1 1.74 37 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The main purpose of providing fins on heat transfer surface is to increase the Temperature gradient Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment Temperature gradient Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy. None of these Prandtl Colburn Reynolds None of these Prandtl Colburn Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the Solution has an elevation of boiling point None of these Evaporators opreate at atmospheric pressure Evaporators operate under vacuum Solution has an elevation of boiling point None of these Evaporators opreate at atmospheric pressure Evaporators operate under vacuum ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS