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Home ‣ Electronics and Communication Engineering ‣ Automatic Control Systems Comments
  • Question

  • The phase margin and damping ratio have no relation.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    Explanation
    They are related.

    Automatic Control Systems problems

    Search Results

    • 1. A stepper motor is

    • Options
    • A. a two phase induction motor
    • B. is a kind of rotating amplifier
    • C. is an electromagnetic transducer used to convert an angular position of shaft into electrical signal
    • D. is an electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis
      • Discuss
    • 2. A CB amplifier has re = 6 ?, RL = 600 ? and a = 0.98. The voltage gain is

    • Options
    • A. 100
    • B. 600 x 0.98
    • C. 98
    • D. 6
      • Discuss
    • 3. In a CE amplifier the input impedance is equal to the ratio of

    • Options
    • A. ac base voltage to ac base current
    • B. ac base voltage to ac emitter current
    • C. ac emitter voltage to ac collector current
    • D. ac collector voltage to ac collector current
      • Discuss
    • 4. Gain of the amplifier is 'A'. Then the I/P impedance and O/P impedance of the closed loop amplifier shown below would be

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. Consider the following statements : A clamper circuit

      1. adds or subtracts a dc voltage to a waveform
      2. does not change the waveform
      3. amplifiers the waveform
      Which are correct?

    • Options
    • A. 1, 2
    • B. 1, 3
    • C. 1, 2, 3
    • D. 2, 3
      • Discuss
    • 6. In the given figure the input is x(t) = A sin ?t. The steady state output y(t) =

    • Options
    • A. A sin (?t + ?) where ? = tan-1 |G(j?)|
    • B. |G(j?)| A sin [?t + ?G(j?)]
    • C. |G(j?)| A sin [2?t + ?G(j?)]
    • D. A G(j?) sin [?t + ?G(j?)]
      • Discuss
    • 7. In the given figure x6 =

    • Options
    • A. de(ax1 + bx2 + cx3)
    • B. (a + b + c) (x1 + x2 + x3) (d + e)
    • C. (ax1 + bx2 + cx3) (d + e)
    • D. a b c d e (x1 + x2 + x3)
      • Discuss
    • 8. The system in the given figure, has

    • Options
    • A. good gain and phase margin
    • B. poor gain and phase margin
    • C. good gain margin but poor phase margin
    • D. poor gain margin but good phase margin
      • Discuss
    • 9. In the given figure, if R = XC, voltage gain is

    • Options
    • A. 0 dB
    • B. 3 dB
    • C. -3 dB
    • D. 20 dB
      • Discuss
    • 10. A unity feedback system has open loop transfer function The closed loop transfer function is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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