- The Kirkbride equation is used to determine the optimum feed tray location in distillation columns by balancing vapor and liquid flows. Conclusion:
The correct answer is option (D).
A closed-loop system has the characteristic equation given by: $ s^3 + k s^2 + (k+2) s + 3 = 0 $.
For the system to be stable, the value of $ k $ is: