The transfer function of the compensator is s+4/s+16. The maximum phase lead frequency and the corresponding phase is :(a) 6 rad/sec, 36.87°(b) 8 rad/sec, 36.87°(c) 6 rad/sec, -36.87°(d) 8 rad/sec, -36.87°The question was posed to me by my school principal while I was bunking the class.The above asked question is from Cascade Compensation in Frequency Domain in section Design of Control Systems

The transfer function of the compensator is s+4/s+16. The maximum phas

1.	The transfer function of the compensator is s+4/s+16. The maximum phase lead frequency and the corresponding phase is :(a) 6 rad/sec, 36.87°(b) 8 rad/sec, 36.87°(c) 6 rad/sec, -36.87°(d) 8 rad/sec, -36.87°The question was posed to me by my school principal while I was bunking the class.The above asked question is from Cascade Compensation in Frequency Domain in section Design of Control Systems
Answer» The correct CHOICE is (b) 8 rad/sec, 36.87° Explanation: PHASE lead FREQUENCY is calculated when magnitude of transfer function is 1 and this is the phase cross over frequency and the phase is calculated by using the tanget FORMULA with the transfer function.

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