Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number) NPr-1/3 NPr-1 NPr NPr1/3 NPr-1/3 NPr-1 NPr NPr1/3 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the steam economy in case of a single effect evaporator system? >1 0.1 < 1 1 >1 0.1 < 1 1 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 ? Plate Sphere All of these Cube Plate Sphere All of these Cube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kg of liquid evaporated per hour in an evaporator is defined as its Steam load Capacity None of these Economy Steam load Capacity None of these Economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Decrease in heat exchanger efficiency Its evaporation loss Excessive corrosion Uneconomic LMTD Decrease in heat exchanger efficiency Its evaporation loss Excessive corrosion Uneconomic LMTD ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a backward feed multiple effect evaporator Feed is introduced in the first effect No pumps are required between successive effects None of these Feed flows from low pressure to high pressure Feed is introduced in the first effect No pumps are required between successive effects None of these Feed flows from low pressure to high pressure ANSWER DOWNLOAD EXAMIANS APP
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