Process Equipment and Plant Design With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT Increases very rapidly Remains constant Increases linearly Decreases very rapidly Increases very rapidly Remains constant Increases linearly Decreases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Ratio of tube length to shell diameter for a shell and tube heat exchanger is 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers < 4 : 1 for gas-gas exchangers Both B & C 4 : 1 to 8 : 1 for liquid-liquid exchanger 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers < 4 : 1 for gas-gas exchangers Both B & C 4 : 1 to 8 : 1 for liquid-liquid exchanger 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 More than Equal to 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 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design What is the slope of the operating line in the rectifying section of a distillation coloumn? ∞ > 1 ∞ > 1 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate? Triangular pitch Heat transfer rate is independent of tube arrangement Square pitch Diagonal square pitch Triangular pitch Heat transfer rate is independent of tube arrangement Square pitch Diagonal square pitch ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design When one of the fluids is highly corrosive and has fouling tendency, it should Flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current Flow at a very slow velocity Preferably flow inside the tube for its easier internal cleaning Perferably flow outside the tube Flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current Flow at a very slow velocity Preferably flow inside the tube for its easier internal cleaning Perferably flow outside the tube ANSWER DOWNLOAD EXAMIANS APP
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