Teaching TN TRB EC Mock Test Control Systems Signal Flow Graph and Block Diagram Block Diagram Reduction Using Signal Flow Graph
In the system whose signal flow graph is shown in the figure, U1(s) and U2(s) are inputs. The transfer function \(\frac{{Y\left( s \right)}}{{{U_1}\left( s \right)}}\) is
1
\(\frac{{{k_1}}}{{JL{s^2} + JRs + {k_1}{k_2}}}\)
2
\(\frac{{{k_1}}}{{JL{s^2} - JRs - {k_1}{k_2}}}\)
3
\(\frac{{{k_1} - {U_2}\left( {R + sL} \right)}}{{JL{s^2} + \left( {JR - {U_2}L} \right)s + {k_1}{k_2} - {U_2}R}}\)
4
\(\frac{{{k_1} - {U_2}\left( {sL - R} \right)}}{{JL{s^2} - \left( {JR + {U_2}L} \right)s - {k_1}{k_2} + {U_2}R}}\)