The OLTF of a unity feedback system is K(s+2)(s+4)/(s+5)(s+6) the angle of arrival of the root loci as s =-2, and s =-4 respectively are:

The OLTF of a unity feedback system is K(s+2)(s+4)/(s+5)(s+6) the ang

1.	The OLTF of a unity feedback system is K(s+2)(s+4)/(s+5)(s+6) the angle of arrival of the root loci as s =-2, and s =-4 respectively are:
A.	0°,180°
B.	180°,0°
C.	90°,180°
D.	180°, 90°
Answer» C. 90°,180°

The characteristic equation is s3+14s2+(45+K)s+K =0, centroid is located at (-x,0) then the value of x is ____________
The OLTF of a unity feedback system is K(s+2)(s+4)/(s+5)(s+6) the angle of arrival of the root loci as s =-2, and s =-4 respectively are:
The characteristic equation of a control system is given as 1+ K(s+4)/s(s+7)(s2+2s+2)=0. The real axis intercept for root locus asymptote is:
The open loop transfer function of the feedback control system is given by G(s) =K(s+3)/s(s+4)2(s+5)(s+6). The number of asymptotes and the centroid of asymptotes of the root loci of closed loop system is
If a feedback control system has its open loop transfer function G(s)H(s) = K/(s-2)(s2+3s+5) has the root locus plot which intersects the imaginary axis at s =0, then the value of K at this point will be
The angles of asymptotes of the root loci of the equation s3+5s2+(K+2)s+K=0 are:
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With reference to root locus, the complex conjugate roots of the characteristic equation of the O.L.T.F. given below G(s)H(s) =K(s+3)/(s+1)2, lie on
THE_OLTF_OF_A_UNITY_FEEDBACK_SYSTEM_IS_K(S+2)(S+4)/(S+5)(S+6)_THE_ANGLE_OF_ARRIVAL_OF_THE_ROOT_LOCI_AS_S_=-2,_AND_S_=-4_RESPECTIVELY_ARE:?$
The_characteristic_equation_is_s3+14s2+(45+K)s+K_=0,_centroid_is_located_at_(-x,0)_then_the_value_of_x_is_____________$