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EEE :: Electrical Control Systems

  1. The position and velocity errors of a type-2 system are

  2. A.

     constant, constant

    B.

     constant, infinity

    C.

     zero, constant

    D.

     zero, zero


  3. With feed back _____ reduces.

  4. A.

     system stability

    B.

     system gain

    C.

     system stability and gain

    D.

     none of the above


  5. Is a closed loop system.

  6. A.

     Auto-pilot for an aircraft

    B.

     Direct current generator

    C.

     Car starter

    D.

     Electric switch


  7. The effect of error damping is to

  8. A.

     provide larger settling lime

    B.

     delay the response

    C.

     reduce steady state error

    D.

     any of the above

    E.

     none of the above


  9. The band width, in a feedback amplifier.

  10. A.

     remains unaffected

    B.

     decreases by the same amount as the gain increase

    C.

     increases by the sane saaaajajt as the gain decrease

    D.

     decreases by the same amount as the gain decrease


  11. In an open loop control system

  12. A.

     Output is independent of control input

    B.

     Output is dependent on control input

    C.

     Only system parameters have effect on the control output

    D.

     None of the above


  13. Due to which of the following reasons excessive bond width in control systems should be avoided ?

  14. A.

     It leads to slow speed of response

    B.

     It leads to low relative stability

    C.

     Noise is proportional to band width

    D.

     None of the above


  15. Hydraulic torque transmission system is analog of

  16. A.

     amplidyne set

    B.

     resistance-capacitance parallel circuit

    C.

     motor-generator set

    D.

     any of the above


  17. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is

  18. A.

     not necessarily stable

    B.

     stable

    C.

     unstable

    D.

     always unstable

    E.

     any of the above


  19. On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?

  20. A.

     Frequency

    B.

     Loop gain

    C.

     Forward gain

    D.

     All of the above