root locus

If P-Z = 2 then the angle of the asymptotes to root locus are

• 45⁰& 315^0

• 135⁰& 225⁰

• 180⁰& -180⁰

• 90⁰& 270⁰

A root locus will have the branches terminating to infinity if

• Z <P

• P < Z

• P=Z

• P=0

A branch of root locus always starts from

• The origin

• The Zero

• The pole

• X-Axis

Angle of arrival in root locus if a system has

• All real zeros

• Complex conjugate Zeros

• Complex conjugate Poles

• All real poles

Angle condition is used to determine

• The value of K

  for a point on

  root locus

• The breakaway

  points in root

  locus

• The existence of

  a point on the

  root locus

• The centroid of

  asymptotes of

  root locus

The root locus in the entirely left half plane represents

• An unstable

  system

• a marginally

  stable system

• a stable system

• an oscillatory

  system

Which of the following is the best method for determining the stability and transient response?

• Root locus

• Bode plot

• Nyquist plot

• None of the

  above

If P= no of poles and Z= no od zeros, then if P>Z, the ‘root locus’ will have following numbers of branches

going to infinity,

• P

• Z

• P+Z

• P-Z

‘Angles of departure’ are required to draw the root locus if a system has

• Complex

  conjugate zeros

• All real poles

• Complex

  conjugate poles

• All real zeros

If entire ‘root locus’ is in the left half plane, then the system is

• Unstable

• Stable

• Stable only for

  certain range of

  K

• Marginally stable