Heat Transfer A 2-4 heat exchanger involves Only counter-flow of fluids Both counter and parallel-flow of the fluids Only parallel-flow of fluids Smaller pressure drop compared to 1-2 exchanger Only counter-flow of fluids Both counter and parallel-flow of the fluids Only parallel-flow of fluids Smaller pressure drop compared to 1-2 exchanger 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 = 800 s t = 356 s t = 283 s t = 400 s t = 800 s t = 356 s t = 283 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T⁴ None of these Q ∝ T² Q ∝ T³ Q ∝ T⁴ None of these Q ∝ T² Q ∝ T³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of providing bleed points in the evaporator is to Create vacuum Remove the product Facilitate removal of non-condensable gases Admit the feed Create vacuum Remove the product Facilitate removal of non-condensable gases Admit the feed ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Can be reflected by a mirror Both B and C Can not pass through vacuum Travel in straight line Can be reflected by a mirror Both B and C Can not pass through vacuum Travel in straight line ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is Stanton number Schmidt number Sherwood number Nusselt number Stanton number Schmidt number Sherwood number Nusselt number ANSWER DOWNLOAD EXAMIANS APP
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