Heat Transfer Reynold's analogy states that (where, St = Stanton number f = friction factor) St = 4f St = f/2 St = f1/2 St = f/4 St = 4f St = f/2 St = f1/2 St = f/4 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. >10 Either B or C, depends on the mass of the body 10 >10 Either B or C, depends on the mass of the body 10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Driving force = Rate x Resistance Rate = Resistance/Driving force Rate = Driving force x Resistance Resistance = Driving force x Rate Driving force = Rate x Resistance Rate = Resistance/Driving force Rate = Driving force x Resistance Resistance = Driving force x Rate 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 Evaporator tubes are generally Horizontal Vertical Random Inclined Horizontal Vertical Random Inclined ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Both B and C Can not pass through vacuum Can be reflected by a mirror Travel in straight line Both B and C Can not pass through vacuum Can be reflected by a mirror Travel in straight line ANSWER DOWNLOAD EXAMIANS APP
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