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  • Question
  • In an integral controller


  • Options
  • A. the output is proportional to input
  • B. the rate of change of output is proportional to input
  • C. the output is proportional to rate of change of input
  • D. none of the above

  • Correct Answer
  • the rate of change of output is proportional to input 

    Explanation
    Output is proportional to integral of input or rate of change of output is proportional to input.

    Automatic Control Systems problems


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    • 1. For the system in the given figure,

    • Options
    • A.
    • B.
    • C.
    • D. none of the above
    • Discuss
    • 2. The log magnitude curve for a constant gain K is a

    • Options
    • A. horizontal straight line
    • B. horizontal straight line of magnitude 20 log K decibels
    • C. an inclined line having slope K
    • D. an inclined line having slope -K
    • Discuss
    • 3. Stepper motors find applications in

    • Options
    • A. X-Y plotters
    • B. numerically controlled machining equipment
    • C. printers
    • D. all of the above
    • Discuss
    • 4. For the system of the given figure the transfer function =

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 5. A negative feedback system has . The closed loop system is stable for

    • Options
    • A. K > 20
    • B. 15 < K < 19
    • C. 8 ? K ? 14
    • D. K < 6
    • Discuss
    • 6. For the system of the given figure the transfer function is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 7. Whether a linear system is stable or unstable that it

    • Options
    • A. is a property of the system only
    • B. depends on the input function only
    • C. both (a) and (b)
    • D. either (a) or (b)
    • Discuss
    • 8. For very low frequencies, v0/vi in the given figure equals

    • Options
    • A. 1
    • B. 0
    • C. ?
    • D. 0.5
    • Discuss
    • 9. For a first order system having transfer function , the unit impulse response is

    • Options
    • A. e-t/T
    • B. T e-t/T
    • C.
    • D. T2 e-t/T
    • Discuss
    • 10. Assertion (A): The steady state response, of a stable, linear, time invariant system, to sinusoidal input depends on initial conditions.

      Reason (R): Frequency response, in steady state, is obtained by replacing s in the transfer function by j?


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R are correct but R is not correct explanation of A
    • C. A is correct but R is wrong
    • D. R is correct but A is wrong
    • Discuss


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