In the circuit shown below the op-amps are ideal. Then $${V_{out}}$$ in Volts is

In the feedback network shown below, if the feedback factor $$k$$ is increased, then the

The transfer function $${{{V_2}\left( s \right)} \over {{V_1}\left( s \right)}}$$ of the circuit shown below is

The signal flow graph for a system is given below. The transfer function $${{Y\left( s \right)} \over {U\left( s \right)}}$$ for this system is