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ECE :: Automatic Control Systems

Automatic Control Systems - Section 1
Automatic Control Systems - Section 2
Automatic Control Systems - Section 3
Automatic Control Systems - Section 4
Automatic Control Systems - Section 5
Automatic Control Systems - Section 6
Automatic Control Systems - Section 7
Automatic Control Systems - Section 8
Automatic Control Systems - Section 9
Automatic Control Systems - Section 10
Automatic Control Systems - section-11

  1. The polar plot in the given figure is for G(jω) =

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  2. In some on-off controllers a differential gap is provided

    3. A.
    to make the manufacture process easier
    B.
    to prevent too often frequent operation of controller
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

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  3. If there are

    4. A.
    two poles of G(s) in the left half plane
    B.
    two poles of G(s) in the right half plane
    C.
    three poles of G(s) in the right half plane
    D.
    four poles of G(s) in the right half plane

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  4. In Bode analysis the correction at corner frequency is 3 dB.

    5. A.
    True
    B.
    False

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  5. The transfer function G(s) of a PID controller is

    6. A.
    B.
    K [1 + Tts + Tds]
    C.
    D.

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  6. In a proportional plus integral control action

    7. A.
    proportional gain Kp is adjustable but integral time Ti is constant
    B.
    proportional gain Kp is adjustable but integral time Ti is adjustable
    C.
    both proportional gain Kp and integral time Ti are adjustable
    D.
    both proportional gain Kp and integral time Ti are constant

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  7. An RLC series circuit has

    If poles p1 and p1* are close to jω axis, then

    8. A.
    resonant frequency is high
    B.
    Q is high
    C.
    bandwidth is large
    D.
    Q is low

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  8. A reactance function

    9. A.
    has a pole at origin
    B.
    has a zero at origin
    C.
    may have a pole or zero at origin
    D.
    has a pole or zero at origin and a pole or zero at infinity

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  9. Given figure shows a magnitude Bode plot. The transfer function for this plot is

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