engineering recuitment BHEL Engineer Trainee Mock Test 2025 Control Systems Signal Flow Graph and Block Diagram Mason's Gain Formula
For the block diagram shown in Fig., C(s)/R2(s) =
1
\(\frac{{{G_1}{G_2}{G_3}}}{{1 + {G_1}{G_2}{G_3}{H_1}}}\)
2
\(\frac{{{G_1}{G_3} + {G_2}}}{{1 + {G_2} + {G_3}{H_1}}}\)
3
\(\frac{{{G_1}{G_3} + {G_2}{G_3}}}{{1 + \left( {{G_1} + {G_2}} \right){G_3}{H_1}}}\)
4
\(\frac{{{G_3}}}{{1 + {G_3}{H_1}}}\)