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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. In position control system the device used for providing rate feedback voltage is

    2. A.
    potentiometer
    B.
    synchro-transmitter
    C.
    synchro-transformer
    D.
    tacho generator

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  2. For the system of the given figure, the closed loop poles are at

    3. A.
    0 and -4
    B.
    -2 ± j6
    C.
    2 ± j6
    D.
    -3 ± j8

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  3. For the given figure,

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  4. A system has .If x(t) = t2, Y(s) is

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  5. Derivative control action is effective?

    6. A.
    Only during steady state periods
    B.
    Only during transient state periods
    C.
    During both steady state and transient state periods
    D.
    Either during steady state or during transient state periods

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  6. In the given figure the input frequency f = 10(1/2 p RC)

    7. A.
    0 dB
    B.
    3 dB
    C.
    -3 dB
    D.
    -20 dB

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  7. For the second order system damping ratio is

    8. A.
    0.1
    B.
    0.25
    C.
    0.333
    D.
    0.5

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  8. Modelling error may occur due to

    9. A.
    neglecting the nonlinear characteristics of plant
    B.
    inaccuracy of parameters
    C.
    change of plant characteristics with time
    D.
    any of the above

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  9. In the given figure, P = 3 kg force. Then X(s) =

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  10. In Bode diagrams an octave is a frequency band from

    11. A.
    ω1 to 10 ω1
    B.
    ω1 to 8 ω1
    C.
    ω1 to 4 ω1
    D.
    ω1 to 2 ω1

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