Electronics and Communication Engineering - Automatic Control Systems - Discussion

Discussion Forum : Automatic Control Systems - Section 1 (Q.No. 3)
3.
For the system in the given figure. The transfer function C(s)/R(s) is
G1 + G2 + 1
G1 G2 + 1
G1 G2 + G2 + 1
G1 G2 + G1 + 1
Answer: Option
Explanation:

Transfer function = (G1 + 1) G2 + 1 = G1 G2 + G2 + 1.

Discussion:
20 comments Page 2 of 2.

Khetendra Vashishtha said:   9 years ago
Forward path = 2 (G2 & G1G2).

Loop = 1(G2).

Using Masons formula:

then TF = (G2 + G1.G2)/(1 - G2).
(1)

R C Pandey said:   1 decade ago
@Anish.

You are calculating TF between C and are. So there is only one forward path and that is G1G2.

Roshan said:   1 decade ago
There is only one loop.

Number of +ve loop = 1.

So, (G1G2 + G2) / (1 - G2).

Fizza said:   10 years ago
What is the difference between transfer function and characteristic equation?

Praveen said:   10 years ago
Can anyone say the correct answer please as soon as possible?

Yogendra said:   6 years ago
No loop is there, 3 forward path is g2 and g1g2 and 1 only.

Hamed said:   9 years ago
Not correct.

The answer is [(G1 + 1) G2]/[1 - G2].

Ayushri said:   10 years ago
Answer is wrong.

Answer: (G1G2/((1+G1)(1+G2))).

Beu said:   1 decade ago
No. of fwd path = 3.
No. of loop = 0.

RITHIKA said:   1 decade ago
Can anyone please solve it briefly ?


Post your comments here:

Your comments will be displayed after verification.