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The industrial controller having the best steady -state accuracy is
consider the following statements :
1. The effect of feedback is to reduce the system error
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable
Which of these statements are correct ?
The intersection of asymptotes of root -loci of a system with open loop transfer function
The open-loop transfer function of unity feedback control system is
The system is stable is
Which one of the following characteristicequations of result in the stable operation of thefeedback system ?
Consider the following statements:
Routh-Hurwitz critierion gives
1. aboslute stability
2. the number of roots lying on the right half of the s-plane
3. the gainmargin and phase margin
Which of these statements are correct ?
A second order system has the damping ratio xand undamped natural frequency of oscillation wn.The setting time at 2% tolerance band of thesystem is
Consider the following statements:
A proportional plus derivative controller
1. has high sensitivity
2. increases the stability of the system
3. improves the steady-state accuracy
Which of these statements are correct ?
The open loop transfer function of a system is
The phase crossover frequency is
Open loop transfer function of a system havingone zero with a positive real value is called
The given characteristic polynomial
s4 + s3 + 2s2 + 2s + 3 =0 has
Which one of the following is the steady-state error for a step input applied to a unity feedbook system with the open loop transfer Function
The open -loop transfer function of a unity feedback control system is given as
The phase crossover frequency and the gain margin are, respectively (Correct the options)
The transfer function of a phase lead network can be written as
A control system has
Root locus of the system can lie on the real axis
Consider the following open loop frequency response of a unit feedback system:
The gain and phase margin of the system arerespectively
The transfer function of a phase lead network, as shown in the figure below is
The values, of R1 and R2 are respectively
The forward path transfer function of a unity feedback system is given by
What is the phase margin for this system ?
Which one of the following statement is correct?
The effects of phase lead compensator on gain crossover frequency () and the bandwidth(BW) are
What is the unit step response of a unity feedback control system having forward path transfer function
An open loop system has a transferfunction . it is converted into aclosed loop system by providing a negative feedback having transfer function 20 (s+ 1).Which one of the following is correct ?The open loop and closed loop systems are,respectively
With regard to the filtering property, the leadcompensator and the lag compensator are,respectively.