Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having Scaling characteristics Both A & B Neither A nor B High viscosity Scaling characteristics Both A & B Neither A nor B High viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity under thermal equilibrium at a particular temperature for circular bodies none of the listed here under thermal equilibrium at a particular temperature for circular bodies none of the listed here 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 = 283 s t = 356 s t = 800 s t = 400 s t = 283 s t = 356 s t = 800 s t = 400 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation of steam on cooling surface is promoted When both the steam and the tube are clean None of these An oily surface Only in presence of air When both the steam and the tube are clean None of these An oily surface Only in presence of air ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? All of these Plate Sphere Cube All of these Plate Sphere Cube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy d²T/dZ² = 0 d²T/dZ² > 0 d²T/dZ² < 0 dT/dZ = 0 d²T/dZ² = 0 d²T/dZ² > 0 d²T/dZ² < 0 dT/dZ = 0 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS