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Control Systems...

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  • Question 1
    1 / -0

    Match List-I (characteristic equation) with List-II (Nature of unit step response) and select the correct answer using the code given below:

    List-I

    List-II

    A) s2 + 8s + 15 = 0

    1) undamped

    B) s2 + 24s + 225 = 0

    2) underdamped

    C) s2 + 20.25 = 0

    3) critically damped

    D) s2 + 20s + 100 = 0

    4) overdamped

  • Question 2
    1 / -0

    The oscillation frequency of the system with the characteristic equation

    s6 + 2s5 + 3s4 + 4s3 + 3s2 + 2s + 1 = 0 is

  • Question 3
    1 / -0

    A unity feedback system has the transfer function \(\frac{{k\left( {s + b} \right)}}{{{s^2}\left( {s + 20} \right)\;}}\)

    The value of b for which the closed loop characteristic equation meet at a single point is

  • Question 4
    1 / -0

    A third order system has 3 pole at s = -1. The system is connected in the unity negative feedback configuration. If the phase margin of the system is 45°, the required value of DC gain of the system is _____. [upto 2 decimal]

  • Question 5
    1 / -0

    Consider the following transfer function of phase lag controller.

    \(G\left( s \right) = \frac{{0.5 + s}}{{0.25 + s}}\)

    The maximum phase lag provided by this compensator is ______ (in degrees).

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