For the block diagram given in the following figure, the expression of C/R is:
A. G1G2G3/1-G2G1
B. G1G2/1-G1G2G3
C. G1G2G3/1-G1G2G3
D. G1G2/G3(1-G1G2)
Answer:A
For the block diagram given in the following figure, the expression of C/R is:
A. G1G2G3/1-G2G1 B. G1G2/1-G1G2G3 C. G1G2G3/1-G1G2G3 D. G1G2/G3(1-G1G2)
Explanation: Block diagram is being converted into signal flow graphs by considering each take off point as a node and each forward transfer function as forward gain.