# The characterstic equation of a feedback control system is given by s3+5s2+(K+6)s+K=0 Where K>0 is a scaler variable parameter. In the root-loci diagram of the system, the asymptotes of the root-locus for large values of K meet at a point in the s-plane, whose coordinates are

1.  (-3,0)

2.  (-2,0)

3.  (-1,0)

4.   (2,0)

4

(-2,0)

Explanation :
No Explanation available for this question

# A unity feedback system ha an open-loop transfer function of the form KG(s)=; b>a Which of the loci shown in the figure can be valid root-loci for the system

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# A unity feedback system has an open loop transfer function, G(s)=The root locus plot is

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# For a gain constant K, the phase-lead compensator

1.  reduces the slope of the magnitude curve in the entire range of frequency domain

2.  decrease the gain cross-over frequency

3.  reduce the phase margin

4.   reduce the reasonance peak Mp

4

reduces the slope of the magnitude curve in the entire range of frequency domain

Explanation :
No Explanation available for this question

# Laplace transform of is

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# Consider the following statements: Lead compensator 1.Increase the margin of stability 2.Speed up transient response 3.Does not affect the system error constant of these statements

1.  2 and 3 are correct

2.  1 and 2 are correct

3.  1 and 3 are correct

4.   1,2 and 3 are correct

4

1 and 2 are correct

Explanation :
No Explanation available for this question

# The maximum phase shift that can be provided by a lead compensator with transfer function G(s)=is

1.  150

2.  300

3.  450

4.  600

4

300

Explanation :
No Explanation available for this question

# A phase-lag compensation will

1.  improve relative stability

2.  increase the speed of response

3.  increase bandwidth

4.   increase overshoot

4

increase overshoot

Explanation :
No Explanation available for this question

# The maximum phase shift that can be obtained by using a lead compensator with transfer function Gc(s)=is equal to

1.  150

2.  300

3.  450

4.  600

4

300

Explanation :
No Explanation available for this question