Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. Remains constant May increase or decrease, depends on the vacuum Decreases Increases Remains constant May increase or decrease, depends on the vacuum Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade? 43.75 35.5 48.25 81.25 43.75 35.5 48.25 81.25 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Shell side pressure drop in a shell and tube heat exchanger does not depend upon the None of these Viscosity, density & mass velocity of shell side fluid Tube diameter & pitch Baffle spacing & shell diameter None of these Viscosity, density & mass velocity of shell side fluid Tube diameter & pitch Baffle spacing & shell diameter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Increases May increase or decrease; depends on the gas Remains unchanged Decreases Increases May increase or decrease; depends on the gas Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to None of these Superheat the steam Create vacuum Remove condensate from the steam pipelines None of these Superheat the steam Create vacuum Remove condensate from the steam pipelines ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it Increases the overall heat transfer coefficient Decreases the pressure drop Decreases the outlet temperature of cooling medium None of these Increases the overall heat transfer coefficient Decreases the pressure drop Decreases the outlet temperature of cooling medium None of these ANSWER DOWNLOAD EXAMIANS APP
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