Test: Control System- 2

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.