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What is the gain of the system given below?
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- 36
- 13.25
- 11
- - 13.25
- 36
Correct Option: C
(i) During block reduction. First choose feedback path and reduce it.
(ii) Parallel blocks are added and series blocks are multiplied.
The feedback path in the diagram is
| H (s) = | = | = | = | = | = 3 | ||||
| I(s) | 1 + 12 × 1/4 | 1 + 3 | 4 |
The parallel block is—
| gain = | = 15 - 4 = 11 | |
| I(s) |
