Heat Transfer Which of the following has the lowest overall heat transfer co-efficient? Air Dowtherm Molten sodium Water Air Dowtherm Molten sodium Water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of providing a 'catchall' in the vapor line of an evaporator is to Create vacuum Arrest the entrained liquid Vent the non-condensible gases Regulate the vapor flow Create vacuum Arrest the entrained liquid Vent the non-condensible gases Regulate the vapor flow ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used In high range of temperature differences To prevent corrosion of the tube bundles In low range of temperature differences Because of its low cost In high range of temperature differences To prevent corrosion of the tube bundles In low range of temperature differences Because of its low cost 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 44 min 22 min 15 min 51 min 44 min 22 min 15 min 51 min ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer jH factor for heat transfer is not a function of the __________ number. Both B & C Grashoff Reynolds Nusselt Both B & C Grashoff Reynolds Nusselt ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C Both the spheres will emit equal amount of radiation per unit time in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both will absorb equal amount of radiation from the surrounding in the beginning Both B & C Both the spheres will emit equal amount of radiation per unit time in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant ANSWER DOWNLOAD EXAMIANS APP
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