Process Equipment and Plant Design Back-trapping in a distillation column results due to Excessive liquid gradient over the tray High gas velocity Low gas velocity Low reflux ratio Excessive liquid gradient over the tray High gas velocity Low gas velocity Low reflux ratio ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Maximum acceptable total liquid gradient over a tray is about __________ mm. 12.5 30.5 5.5 45.5 12.5 30.5 5.5 45.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing. 100-150 20-40 1000-1500 43835 100-150 20-40 1000-1500 43835 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The dust collection efficiency of electrostatic precipitator increases with increase in the Electrode area Both A & B Gas flow rate Neither A nor B Electrode area Both A & B Gas flow rate Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles? To reduce the induced vibration in the tubes To provide support to the tube bundle To increase the tube side heat transfer co-efficient by inducing turbulence To increase the residence time of shell side fluid To reduce the induced vibration in the tubes To provide support to the tube bundle To increase the tube side heat transfer co-efficient by inducing turbulence To increase the residence time of shell side fluid ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG. Remains same Increases Decreases None of these Remains same Increases Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
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