**2003**

1. The root locus of the system G(s)H(s) = K / [s(s + 2)(s + 3)] has the break away point located at

a) (-0.5, 0)

b) (-2.548, 0)

c) (-4, 0)

d) (-0.748, 0)

**Solution :**https://www.youtube.com/watch?v=f_IljSih2eU

**2004**

2. Given G(s)H(s) = K /[s(s + 1)(s + 3)], the point of intersection of the asymptotes of the root loci with the real axis is

a) - 4

b) 1.33

c) - 1.33

d) 4

**Solution :**https://www.youtube.com/watch?v=1eQ1YNdEF_4

**2005**

3. A unity feedback system is given as G(s) = k(1 – s) / [s(s + 3)]. Indicate the correct root locus diagram.

**Solution :**https://www.youtube.com/watch?v=cCAfe9ydiU8

**2007**

4. A unity feedback control system has an open loop transfer function G(s) = – K

**/**[s(s

^{2}+ 7s + 12)]. The gain k for which s = –1+j1 will lie on the root locus of this system is

a) 4

b) 5.5

c) 6.5

d) 10

**Solution :**https://www.youtube.com/watch?v=ppJqQhOp_xk

**2009**

5. the feedback configuration and the pole-zero locations of G(s) = (s

^{2}– 2s + 2)/(s

^{2}+ 2s +2), are shown below.

The root locus for negative values of k, i.e. for –∞ < k < 0, has break away/break in points and angle of departure at pole P (w.r.t. the positive real axis) equal to

a) ± √2 and 0

^{o}

b) ± √2 and 45

^{o}

c) ± √3 and 0

^{o}

d) ± √3 and 45

^{o}

**Solution :**https://www.youtube.com/watch?v=uagcsFAoEB0

**2011**

6. The root locus plot for a system is given below. The open loop transfer function corresponding to this plot is given by

**Solution :**https://www.youtube.com/watch?v=ARZuGJ_JqBo

**2014**

7. In the root locus plot shown in the figure, the pole/zero marks and the arrows have been removed. Which one of the following tranfer functions has this root locus?

**Solution :**https://www.youtube.com/watch?v=3X9gdDGti0Q

8. The characteristic equation of a unity negative feedback system is 1+KG(s) = 0. The open loop transfer function G(s) has one pole at zero and two poles at – 1. The root locus of the system for varying K is shown in the figure.

The constant damping ratio line, for ζ = 0.5, intersects the root locus at point A. The distance from the origin to point A is given as 0.5. The value of K at point A is ____________

**Solution :**https://www.youtube.com/watch?v=hEIZpN9XAPM

**2015**

9. A unity negative feedback system has the open loop transfer function

the value of the gain K (>0) at which the root locus crosses the imaginary axis is __________________

**Solution :**https://www.youtube.com/watch?v=taFVjNfxJ_Q

10. The open loop transfer function of a unity feedback configuration is given as

The value of a gain K( >0 ) for which -1+j2 lies on the root locus is _________.

**Solution :**https://www.youtube.com/watch?v=IhF_FZ9IJvI

11. A unity negative feedback system has an open loop transfer function G(s) = K / S(S+10), the gain K for the system to have a damping ratio of 0.25 is _____________

**Solution :**https://www.youtube.com/watch?v=LCcmOh0C1rY

12. For the system shown in figure, s = - 2.75 lies on the root locus if K is ____________

**Solution :**https://www.youtube.com/watch?v=mhCsqV9Gd2g

I’m curious to find out what blog system you’re utilizing? I’m having some small security problems with my latest website and I would like to find something more risk-free. Do you have any recommendations? iphone psd

ReplyDeleteThis kind of lovely blog you’ve, glad I found it!?? mobile phone mockup

ReplyDeleteIt laborious to seek out knowledgeable folks on this matter, but you sound like you already know what you are talking about! Thanks ipad photoshop

ReplyDeleteI truly treasure your piece of work, Great post. CHECK ME OUT BY CLICKING MY NAME!!! Poetry Naveed Ahmed

ReplyDeleteThanks for this grand post, I am glad I observed this website on yahoo. android mockup

ReplyDeleteI am not very great with English but I find this very leisurely to translate. 토토사이트

ReplyDeleteI’m curious to find out what blog system you’re utilizing? I’m having some small security problems with my latest website and I would like to find something more risk-free. Do you have any recommendations? top front end developers

ReplyDeleteI would say this is the perfect blog for technical exams.

ReplyDeletedefinitely an interesting read. i usually dont comment. signed Mark Cuban 먹튀검증

ReplyDelete-------------------------------

I am often to blogging we actually appreciate your posts. The content has truly peaks my interest. I am going to bookmark your web site and maintain checking achievable data. 대딸방

Thanks for your great work..

ReplyDeleteInteresting to read to prepare exam perfect blog

ReplyDelete