The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?

Related Mcqs:

1. The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for variation of K from 0 to ∞. The number of loci is_______________?

   A. 1
   B. 2
   C. 3
   D. 4

2. In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?

   A. Overdamped response
   B. Underdamped response
   C. Undamped response
   D. Unstable response

3. The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?

   A. -1
   B. 0
   C. 1
   D. ∞

4. In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is_____________?

   A. G/(1 + H)
   B. H/(1 + G)
   C. G/H
   D. H/G

5. ____________ stability method uses open loop transfer function?

   A. Nyquist
   B. Mikhailov
   C. Ruth
   D. None of these

6. The open loop transfer function of a control system is KR/(1 + TS). This represents ______________?

   A. A first order system
   B. Dead time system
   C. A first order time lag
   D. A second order system

7. Number of poles in a system with transfer function 1/(s2 + 2s2 + 1) is ________________?

   A. 2
   B. 5
   C. 3
   D. 1

8. Bode stability method uses ____________ loop transfer function?

   A. Open
   B. Closed
   C. Either A. or B.
   D. Neither A. nor B.

9. The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?

   A. Depends only upon the open loop transfer function
   B. Determines its stability
   C. Is the same for set point or load changes
   D. All A , B & C.

10. Routh stability method uses ______________ loop transfer function?

    A. Open
    B. Closed
    C. Either A. or B.
    D. Neither A. nor B.