Heat Transfer Heat transfer occurs by natural convection because change in temperature causes difference in Viscosity Heat capacity Density Thermal conductivity Viscosity Heat capacity Density Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.1 > 0.6 0.5 < 0.5 < 0.1 > 0.6 0.5 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Can be reflected by a mirror Can not pass through vacuum Both B and C Travel in straight line Can be reflected by a mirror Can not pass through vacuum Both B and C Travel in straight line ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Circulation pump is located below the evaporater to Create more suction head None of these Avoid cavitation Avoid frequent priming Create more suction head None of these Avoid cavitation Avoid frequent priming ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Increases or decreases depending on number of shell passes Increases Remains unchanged Decreases Increases or decreases depending on number of shell passes Increases Remains unchanged 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 = 400 s t = 356 s t = 283 s t = 800 s t = 400 s t = 356 s t = 283 s t = 800 s ANSWER DOWNLOAD EXAMIANS APP
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