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In the signal flow graph of figure given below, the gain C/R will be ______
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- 44/23
- 11/2
- 4/23
- All of the above
Correct Option: A
| Mason gain formula, T = | ∑ PK ∆K | |
| ∆ |
Gains of loop 1 – 2; Gains of loop 2 – 3
Gains of loop 3 – 4; Gains of loop 4 – 5
loop 1 loop 3 = 8
∆ = 1 + (2 + 3 + 4 + 5) + 8 = 23
∑ PK ∆K = 5 (1 + 3) + 24 = 24
| ∴ T = | ||
| 23 |
