The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is
A. $$\frac{{5\pi }}{{12}}$$
B. $$\frac{\pi }{6}$$
C. $$\frac{\pi }{{12}}$$
D. $$\frac{\pi }{3}$$
Answer: Option A
This Question Belongs to Chemical Engineering >> Process Control And Instrumentation
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