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

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Ram Sharma • 178.09K Points
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Q.) 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

(D) π/3

Correct answer : Option (A) - 5π/12

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