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ESE 2021 Technical Quiz || Feedback Principle & Root Locus Technique
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Question 1
The Nyquist plot of a system passes through (-1, j0) point in the G(jw)H(jw) plane, the phase-margin of the system si
Question 2
Consider the following :
1) Phase margin
2) Gain margin
3) maximum overshoot
4) Bandwidth
Which of the above are the frequency domain specifications required to design a controlsystem?
1) Phase margin
2) Gain margin
3) maximum overshoot
4) Bandwidth
Which of the above are the frequency domain specifications required to design a controlsystem?
Question 3
The polar plot of frequency response of a linear under damped second order system is shown in the figure below. What is the transfer function of this system?
Question 4
Consider the following statements in connection with frequency domain specifications of a control system:
1) Resonant peak and peak overshoot are both functions of the damping ratio
only
2) The resonant frequency
3) Higher the resonant peak, higher is the maximum overshoot of the step response.
Which of the statements given above are correct?
1) Resonant peak and peak overshoot are both functions of the damping ratio
only 2) The resonant frequency
3) Higher the resonant peak, higher is the maximum overshoot of the step response.
Which of the statements given above are correct?
Question 5
Consider the following statements in connection with feedback in control system :
1) With an increase in forward gain, the output value approaches the input value in the case of negative feedback closed-loop system
2) A negative feedback closed-loop system when subjected to an input of 5V with forward gain of 1 and a feedback gain of 1 gives output 4.999 V.
3) The transfer function is dependent only upon its internal structure and components, and is independent of the input applied to the system.
4) The overall gain of the block diagram shown is 10.
Which of the statements given above are correct ?
1) With an increase in forward gain, the output value approaches the input value in the case of negative feedback closed-loop system
2) A negative feedback closed-loop system when subjected to an input of 5V with forward gain of 1 and a feedback gain of 1 gives output 4.999 V.
3) The transfer function is dependent only upon its internal structure and components, and is independent of the input applied to the system.
4) The overall gain of the block diagram shown is 10.
Which of the statements given above are correct ?
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