The time constant of a unity gain, first order plus time delay process – McqOptions

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1.	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.	5π/12
B.	π/6
C.	π/12
D.	π/3
Answer» B. π/6

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