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  • Question

  • For the control system in the given figure, the value of K for critical damping is
    For the control system in the given figure, the value of K for critical damping is 1 5.125 6.831 10


  • Options
  • A. 1
  • B. 5.125
  • C. 6.831
  • D. 10

  • Correct Answer
  • 5.125 

    Explanation
    For the control system in the given figure, the value of K for critical damping is 1 5.125 6.831 10 since ? = 1, ?n = 3.5 Hence 2 + 2k = 3.52 = 12.25 or K = 5.125 .

    Automatic Control Systems problems

    Search Results

    • 1. In the given figure, the input frequency is such that R = XC. Then

    • Options
    • A. v0 lags vi by 45°
    • B. v0 lags vi by 90°
    • C. v0 leads vi by 45°
    • D. v0 leads vi by 90°
      • Discuss
    • 2. For the circuit in the given figure, V2(s)/V1(s) =

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. For the given figure C(s)/R(s)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. For the circuit in the given figure,

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. If a system is to follow arbitrary inputs accurately the bandwidth should be

    • Options
    • A. large
    • B. small
    • C. very small
    • D. neither small nor large
      • Discuss
    • 6. First column elements of Routh's tabulation are 3, 5, , 2. It means that there

    • Options
    • A. is one root in left half s plane
    • B. are two roots in left half s plane
    • C. are two roots in right half s plane
    • D. is one root in right half s plane
      • Discuss
    • 7. Consider the systems with following open loop transfer functions

      If unity feedback is used, the increasing order of time taken for unit step response to settle is

    • Options
    • A. 1, 2, 3
    • B. 3, 1, 2
    • C. 2, 3, 1
    • D. 3, 2, 1
      • Discuss
    • 8. When a unit step voltage drives a lag network the output

    • Options
    • A. remains constant at unit step value
    • B. increases exponentially from zero to final value
    • C. decreases exponentially from 1 to 0
    • D. either (b) of (c) depending on values of R and C
      • Discuss
    • 9. In a minimum phase system

    • Options
    • A. all poles lie in the left half plane
    • B. all zeros lie in the left half plane
    • C. all poles lie in the right half plane
    • D. all except one pole or zero lie in the left half plane
      • Discuss
    • 10. For the system in the given figure the characteristic equation is

    • Options
    • A.
    • B.
    • C. K(s + 1)(s + 3) = 0
    • D. s(s + 2) = 0
      • Discuss

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