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EEE :: Electrical Control Systems

  1. In thermal-electrical analogy charge is considered analogous to

  2. A.

     heat flow

    B.

     reciprocal of heat flow

    C.

     reciprocal of temperature

    D.

     temperature

    E.

     none of the above

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  3. An increase in gain, in most systems, leads to

  4. A.

     smaller damping ratio

    B.

     larger damping ratio

    C.

     constant damping ratio

    D.

     none of the above

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  5. In case of type-1 system steady state acceleration is

  6. A.

     unity

    B.

     infinity

    C.

     zero

    D.

     10

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  7. The transient response of a system is mainly due to

  8. A.

     inertia forces

    B.

     internal forces

    C.

     stored energy

    D.

     friction

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  9. Which of the following is the best method for determining the stability and transient response ?

  10. A.

     Root locus

    B.

     Bode plot

    C.

     Nyquist plot

    D.

     None of the above

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  11. A conditionally stable system exhibits poor stability at

  12. A.

     low frequencies

    B.

     reduced values of open loop gain

    C.

     increased values of open loop gain

    D.

     none of the above

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  13. Is a part of the human temperature control system.

  14. A.

     Digestive system

    B.

     Perspiration system

    C.

     Ear

    D.

     Leg movement

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  15. Which of the following is the non-linearity caused by servomotor ?

  16. A.

     Static friction

    B.

     Backlash

    C.

     Saturation

    D.

     None of the above

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  17. The output of a feedback control system must be a function of

  18. A.

     reference and output

    B.

     reference and input

    C.

     input and feedback signal

    D.

     output and feedback signal

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  19. Which of the following is the input to a controller ?

  20. A.

     Servo signal

    B.

     Desired variable value

    C.

     Error signal

    D.

     Sensed signal

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