00:01
So, in this question, we are given with the input rs here, and here there is a summing point.
00:09
So, from here, we are getting our es signal, and there is one open loop that is g1 of s, and then it is again connected to g2 of s, and then we are getting our output cs, and there is a negative feedback also from this point, which is h1 of s, and let us consider a signal bs is coming from here.
00:49
So, what we can write, so let us see from c, here it was coming as cs, and after getting convoluted with the h1 signal, it is next changed.
01:07
So, we can write here, one thing we can write that es is equal to rs, and since it is negative feedback system, so we can write rs minus es.
01:22
So, we can write es as, and we can write bs as, let us first write bs, bs will be nothing but h1s multiplied with cs.
01:36
So, after finding it, we can put this value, it will be equation 2, and another thing we can write here, both g1 and g2 can be multiplied, and we can write our es as, es will be nothing but cs divided by g1s, or we can write g1 multiplied by g2s.
02:02
So, from here, we can put these values from equation 2 and 3 in equation 1, to find our transfer function, which will be cs by rs...