Heat Transfer Peclet number (Pe) is given by Pe = Re/Pr Pe = Re.Pr Pe = Nu.Re Pe = Pr/Re Pe = Re/Pr Pe = Re.Pr Pe = Nu.Re Pe = Pr/Re ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a forward feed multiple effect evaporator unit Viscosity of liquid is highest in first effect Transfer from effect to effect is done by pumps No pump is required to withdraw the product from the last effect None of these Viscosity of liquid is highest in first effect Transfer from effect to effect is done by pumps No pump is required to withdraw the product from the last effect None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Keeping the heat transfer surface clean Enhancing the fluid pumping rate Increasing the tube length None of these Keeping the heat transfer surface clean Enhancing the fluid pumping rate Increasing the tube length None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = (COP)HP = 2.5 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 2.5; (COP)HP = 1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of providing a 'catchall' in the vapor line of an evaporator is to Arrest the entrained liquid Create vacuum Vent the non-condensible gases Regulate the vapor flow Arrest the entrained liquid Create vacuum Vent the non-condensible gases Regulate the vapor flow ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have Less resistance to heat flow Low thermal conductivity High thermal conductivity A porous structure Less resistance to heat flow Low thermal conductivity High thermal conductivity A porous structure ANSWER DOWNLOAD EXAMIANS APP
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