2333Chemical EngineeringMedium
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________?
Aπ/3
Bπ/6
C5π/12
Dπ/12
Correct answer
C. 5π/12
Explanation
The correct answer is 5π/12.