Heat Transfer Heat flux, as defined in heat flow is analogous to __________ in electricity flow. None of these Resistance Voltage Current None of these Resistance Voltage Current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by None of these Keeping the heat transfer surface clean Increasing the tube length Enhancing the fluid pumping rate None of these Keeping the heat transfer surface clean Increasing the tube length Enhancing the fluid pumping rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Silver Water Black Air Silver Water Black Air ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Equal for all the three Sphere Cube Cylinder Equal for all the three Sphere Cube Cylinder 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 = 400 s t = 800 s t = 356 s t = 283 s t = 400 s t = 800 s t = 356 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is 6000 48000 60000 24000 6000 48000 60000 24000 ANSWER DOWNLOAD EXAMIANS APP
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