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EEE :: Electrical Control Systems

  1. In a system low friction coefficient facilitates

  2. A.

     Reduced velocity lag error

    B.

     Increased velocity lag error

    C.

     Increased speed of response

    D.

     Reduced time constant of the system

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  3. As a result of introduction of negative feedback which of the following will not decrease?

  4. A.

     Band width

    B.

     Overall gain

    C.

     Distortion

    D.

     Instability

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  5. an be extended to systems which are time-varying ?

  6. A.

     Bode-Nyquist stability methods

    B.

     Transfer functions

    C.

     Root locus design

    D.

     State model representatives

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  7. The term backlash is associated with

  8. A.

     servomotors

    B.

     induction relays

    C.

     gear trains

    D.

     any of the above

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  9. A closed loop system is distinguished from open loop system by which of the following ?

  10. A.

     Servomechanism

    B.

     Feedback

    C.

     Output pattern

    D.

     Input pattern

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  11. Transfer function of a system is used to calculate which of the following ?

  12. A.

     The order of the system

    B.

     The time constant

    C.

     The output for any given input

    D.

     The steady state gain

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  13. The second derivative input signals modify which of the following ?

  14. A.

     The time constant of the system

    B.

     Damping of the system

    C.

     The gain of the system

    D.

     The time constant and suppress the oscillations

    E.

     None of the above

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  15. In a stable control system backlash can cause which of the following ?

  16. A.

     Underdamping

    B.

     Overdamping

    C.

     Poor stability at reduced values of open loop gain

    D.

     Low-level oscillations

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  17. The transfer function is applicable to which of the following ?

  18. A.

     Linear and time-in variant systems

    B.

     Linear and time-variant systems

    C.

     Linear systems

    D.

     Non-linear systems

    E.

     None of the above

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  19. Phase margin of a system is used to specify which of the following ?

  20. A.

     Frequency response

    B.

     Absolute stability

    C.

     Relative stability

    D.

     Time response

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