0 0 votes The feedback system shown below oscillates at $2\;\text{rad/s}$ when $K=2$ and $a=0.75$ $K=3$ and $a=0.75$ $K=4$ and $a=0.5$ $K=2$ and $a=0.5$ Control Systems gate2012-in control-systems numerical-answers + – Milicevic3306 7.9k points answer 0 reply