Root Locus - Control System Multiple Choice Questions and Answers

41.  In root locus plot different roots have the same

   A. Phase

   B. Gain

   C. Both A and B

   D. Gain margin and fhase margin

42.  Which of the following is exhibited by Root locus diagrams ?

   A. The poles of the transfer function for a set of parameter values

   B. The bandwidth of the system

   C. The response of a system to a step input

   D. The frequency response of a system

43.  The break away points of a root locus occur at

   A. Imaginary axis

   B. Real axis

   C. Multiple routes of characteristic equation

   D. None of the above

44.  Which of the following statements is incorrect for root locus technique?

   A. It is most useful for single input single output systems

   B. It provides the pattern of movement of closed loop holes when open loop gain varies

   C. It is used to obtain closed-loop pole configuration from open-loop poles and zeros

   D. None of the above

45.  If the root locus branches crosses the imaginary axis the system becomes

   A. Overdamped

   B. Critically damped

   C. Stable

   D. Unstable

< 1 2 3 4 5 6 7 8 9 10 Next