Q. A system has a complex conjugate root pair of multiplicity two or more in its characteristic equation. The impulse response of the system will be: (Solved)
1. a sinusoidal oscillation which decays exponentially; the system is therefore stable
2. a sinusoidal oscillation with a time multiplier ; the system is therefore unstable
3. a sinusoidal oscillation which rises exponentially ; the system is therefore unstable
4. a dc term harmonic oscillation the system therefore becomes limiting stable
- c. a sinusoidal oscillation which rises exponentially ; the system is therefore unstable