Heat Transfer Steam trap is used to None of these Stop the supply of steam Remove water resulting from partial condensation of steam Condense the steam flowing in the pipeline None of these Stop the supply of steam Remove water resulting from partial condensation of steam Condense the steam flowing in the pipeline ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats P and S P and Q R and S P and R P and S P and Q R and S P and R ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 20 minutes 10 minutes 5 minutes 40 minutes 20 minutes 10 minutes 5 minutes 40 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid for fluids in laminar flow when Grashhoff number is very important for fluids in tubulent flow none of the listed here for fluids in laminar flow when Grashhoff number is very important for fluids in tubulent flow none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Increases Remains unchanged May increase or decrease; depends on the gas Decreases Increases Remains unchanged May increase or decrease; depends on the gas Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time t = 800 s t = 356 s t = 283 s t = 400 s t = 800 s t = 356 s t = 283 s t = 400 s ANSWER DOWNLOAD EXAMIANS APP
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