Heat Transfer (NRe.NPr)(D/L) is called the __________ number Stanton None of these Peclet Graetz Stanton None of these Peclet Graetz ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator? Calenderia vertical tube evaporator Horizontal tube evaporator Agitated film evaporator Long vertical evaporator Calenderia vertical tube evaporator Horizontal tube evaporator Agitated film evaporator Long vertical evaporator 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. 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 10 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 = 356 s t = 283 s t = 400 s t = 800 s t = 356 s t = 283 s t = 400 s t = 800 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the lowest Prandtl number? Water Transformer oil Molten sodium (a coolant used in fast breeder reactor) Dilute H₂SO₄ Water Transformer oil Molten sodium (a coolant used in fast breeder reactor) Dilute H₂SO₄ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor Accounts for additional resistances to heat flow None of these Does not provide a safety factor for design Is a dimensionless quantity Accounts for additional resistances to heat flow None of these Does not provide a safety factor for design Is a dimensionless quantity ANSWER DOWNLOAD EXAMIANS APP
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