Process Control and Instrumentation
If response of a control system is to be free of offset and oscillation, the most suitable controller is
proportional-integral (PI) controller.
proportional integral-derivative (PID) controller.
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The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Phosphoric acid is produced in wet process from phosphate rock and