Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Both B & C Is economical in operation Employs high velocity, high heat transfer rate and less heating surface requirement Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Both B & C Is economical in operation Employs high velocity, high heat transfer rate and less heating surface requirement ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less None of these Are easier to clean Are less prone to fouling Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less None of these Are easier to clean Are less prone to fouling ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Filtration rate is affected by the Pressure drop across the cake & filter medium Area of filtering surface & the viscosity of filtrate All of these Cake & filter medium resistance Pressure drop across the cake & filter medium Area of filtering surface & the viscosity of filtrate All of these Cake & filter medium resistance ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling. SO₂ CO₂ None of these NH₃ SO₂ CO₂ None of these NH₃ ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The maximum liquid gradient over a tray must not exceed 2"-3.5" Half the tray spacing 0.5" -1.25" 5" 2"-3.5" Half the tray spacing 0.5" -1.25" 5" ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends. Less than Equal to Either B or C; depends on maximum permissible internal pressure More than Less than Equal to Either B or C; depends on maximum permissible internal pressure More than ANSWER DOWNLOAD EXAMIANS APP
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