In a feedback control system, phase margin (PM) is:1. Directly proport – McqOptions

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1.	In a feedback control system, phase margin (PM) is:1. Directly proportional to ξ2. Inversely proportional to ξ3. Independent of ξ4. Zero when ξ = 0Which of the above statements are correct?
A.	1 and 2
B.	2 and 3
C.	3 and 4
D.	1 and 4
Answer» E.

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