Magnitude and phase angle of GH and value of k on Root Locus

Lesson 2 of 5 • 7 upvotes • 9:04mins

Akhilesh Pandey

Magnitude and phase angle of GH on Root Locus Characteristic equation, 1 + G(s) H(s) = 0 So, G(s) H(s) = −1 On root locus, magnitude of Loop gain, |G(s) H(s)|= 1 On root locus, phase angle of loop gain = odd multiple of 180° Value of parameter k on Root Locus At any point on root locus, = product of vector lengths drawn from pole to s /product of vector length drawn from zero to s previous year GATE problem with solution.