Process Equipment and Plant Design Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from 44119 3.5-5.5 7.5-10.0 1.5-2.5 44119 3.5-5.5 7.5-10.0 1.5-2.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness? Flat plate Conical Hemispherical Ellipsoidal (2 : 1) Flat plate Conical Hemispherical Ellipsoidal (2 : 1) ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Liquid gradient over the tray results due to the Resistance offered to flow of liquids by caps & risers and the flow of gas Large plate spacing Large reflux ratio Low gas velocity Resistance offered to flow of liquids by caps & risers and the flow of gas Large plate spacing Large reflux ratio Low gas velocity ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The retention time of material in a rotary dryer depends upon its Slope & length Rpm All of these Flights arrangement Slope & length Rpm All of these Flights arrangement ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to 1.004G0.8 HG = 1.004G0.37 0.0176G1.37 HG = 0.0176G0.37 1.004G0.8 HG = 1.004G0.37 0.0176G1.37 HG = 0.0176G0.37 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. Either B or C; depends on maximum permissible internal pressure Less than More than Equal to Either B or C; depends on maximum permissible internal pressure Less than More than Equal to ANSWER DOWNLOAD EXAMIANS APP
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