engineering recuitment BHEL Engineer Trainee Mock Test 2025 Control Systems Signal Flow Graph and Block Diagram

Determine the output C due to R, U1, and U2.

1
\(C = \frac{{{G_1}{G_2}R + {G_2}{U_1} + {G_1}{G_2}{H_1}{U_2}}}{{1 + {G_1}{G_2}{H_1}{H_2}}}\)
2
\(C = \frac{{{G_1}{G_2}R + {G_2}{U_1} + {G_1}{G_2}{H_1}{U_2}}}{{1 - {G_1}{G_2}{H_1}{H_2}}}\)
3
\(C = \frac{{{G_1}{G_2}R - {G_2}{U_1} + {G_1}{G_2}{H_1}{U_2}}}{{1 - {G_1}{G_2}{H_1}{H_2}}}\)
4
\(C = \frac{{{G_1}{G_2}R - {G_2}{U_1} - {G_1}{G_2}{H_1}{U_2}}}{{1 + {G_1}{G_2}{H_1}{H_2}}}\)
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