Process Control and Instrumentation
Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1).

W = √(7/8), Kc = 45/4
W = 1, Kc = 13
W = √(7/6), Kc = 46/3
W = 1/√14, Kc = 45/7√14

ANSWER DOWNLOAD EXAMIANS APP

Process Control and Instrumentation
Time constant is the

Time taken by the controlled variable to reach 63.2% of its full change
Same as transportation lag
Time required by the measured variable to reach 63.2% of its ultimate change
Same as dead time

ANSWER DOWNLOAD EXAMIANS APP