Q221
Open questionFrom the figure shown below, the Transfer function of the signal flow graph is:
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ECE · all questionsControl Systems
Control Systems
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Q222
Open questionIn a closed loop system for which the output is the speed of a motor, the output rate control can be used to:
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Q223
Open questionThe following quantities give a measure of the transient characteristics of a control system, when subjected to unit step excitation:
1. Maximum overshoot
2. Maximum undershoot
3. Overall gain
4. Delay time
5. Rise time
6. Fall time
1. Maximum overshoot
2. Maximum undershoot
3. Overall gain
4. Delay time
5. Rise time
6. Fall time
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Q224
Open questionFor the given circuit, which one of the following is the correct state equation?
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Q225
Open questionWhat is the value of K for a unity feedback system with to have a peak overshoot of 50%?
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Q226
Open questionWhich of the following components can be used as a rotating amplifier in a control system?
1. An amplidyne
2. A separately excited dc generator
3. A self-excited dc generator
4. A synchro
Select the correct answer using the options given below:
1. An amplidyne
2. A separately excited dc generator
3. A self-excited dc generator
4. A synchro
Select the correct answer using the options given below:
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Q227
Open questionFor the following feedback system The 2% settling time of the step response is required to be less than 2 seconds.
Which one of the following compensators C(s) achieves this?
Which one of the following compensators C(s) achieves this?
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Q228
Open questionThe main purpose of feedback in a control system is
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Q229
Open questionIn control systems, we have
1. Nyquist Criterion
2. Bode plot
3. Root locus plot
4. RH-Criterion
Which of the above are in time domain?
1. Nyquist Criterion
2. Bode plot
3. Root locus plot
4. RH-Criterion
Which of the above are in time domain?
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Q230
Open questionIn a feedback control system, phase margin (PM) is:
1. Directly proportional to ξ
2. Inversely proportional to ξ
3. Independent of ξ
4. Zero when ξ = 0
Which of the above statements are correct?
1. Directly proportional to ξ
2. Inversely proportional to ξ
3. Independent of ξ
4. Zero when ξ = 0
Which of the above statements are correct?
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Q231
Open questionThe below figure shows the root locus of a unity feedback system. The open loop transfer function of the system is:
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Q232
Open questionIn case of synchro error detector, the electrical zero position of control transformer is obtained when angular displacement between rotors is:
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Q233
Open questionSeparation property of state-transition matrix is:
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Q234
Open questionGiven A = \left[ {\begin{array}{*{20}{c}}
1&0\\
0&1
\end{array}} \right] the state transition matrix eAt is given by
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Q235
Open questionA first order instrument is characterised by
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Q236
Open questionTwo identical first order systems have been cascaded non-interactively. The unit step response of the system will be
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Q237
Open questionThe block diagram of a system is illustrated in the figure shown, where X(s) is the input Y(s) is the output. The transfer function is
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Q238
Open questionWhat is the unit step response of a unity feedback control system having forward path transfer function
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Q239
Open questionConsider the following statements regarding time response specifications:
1. Delay time is the time required for the response to reach 10% to 90% or 5% to 95% or 0% to 100% of its final value.
2. Peak time is the time required for the response to reach the first peak overshoot.
3. Settling time is the time required for the response to reach and maintain beyond a specified tolerance band, i.e., either 3% or 5% of the initial value.
Which of the above statements are not correct?
1. Delay time is the time required for the response to reach 10% to 90% or 5% to 95% or 0% to 100% of its final value.
2. Peak time is the time required for the response to reach the first peak overshoot.
3. Settling time is the time required for the response to reach and maintain beyond a specified tolerance band, i.e., either 3% or 5% of the initial value.
Which of the above statements are not correct?
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Q240
Open questionA unit step input is applied to the negative feedback system whose closed loop transfer function is then the steady state value of the output is
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