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EEE :: Electrical Control Systems

  1. In a stable control system saturation can cause which of the following ?

  2. A.

     Low-level oscillations

    B.

     High-level oscillations

    C.

     Conditional stability

    D.

     Overdamping


  3. Pressure error can be measured by which of the following ?

  4. A.

     Differential bellows and straingauge

    B.

     Selsyn

    C.

     Strain gauge

    D.

     Strain gauge and potentiometer


  5. Is the reference input minus the primary feedback.

  6. A.

     Manipulated variable

    B.

     Zero sequence

    C.

     Actuating signal

    D.

     Primary feedback


  7. The transfer function technique is considered as inadequate under which of the following conditions ?

  8. A.

     Systems having complexities and non-linearities

    B.

     Systems having stability problems

    C.

     Systems having multiple input disturbances

    D.

     All of the above


  9. A control system with excessive noise, is likely to suffer from

  10. A.

     saturation in amplifying stages

    B.

     loss of gain

    C.

     vibrations

    D.

     oscillations


  11. In open loop system

  12. A.

     the control action depends on the size of the system

    B.

     the control action depends on system variables

    C.

     the control action depends on the input signal

    D.

     the control action is independent of the output


  13. Velocity error constant of a system is measured when the input to the system is unit _______ function.

  14. A.

     parabolic

    B.

     ramp

    C.

     impulse

    D.

     step


  15. The transient response, with feedback system,

  16. A.

     rises slowly

    B.

     rises quickly

    C.

     decays slowly

    D.

     decays quickly


  17. The initial response when tne output is not equal to input is called

  18. A.

     Transient response

    B.

     Error response

    C.

     Dynamic response

    D.

     Either of the above


  19. Spring constant in force-voltage analogy is analogous to

  20. A.

     capacitance

    B.

     reciprocal of capacitance

    C.

     current

    D.

     resistance