Q3. Determine the gain and phase to sustain oscillations
A negative feedback system is shown below. Under what conditions does the system oscillate?

Question

Q3. Determine the gain and phase to sustain oscillations 
 A negative feedback system is shown below. Under what conditions does the system oscillate?

Answer

|G(j\omega)||H(j\omega) + K(j\omega)| = 0.5  , and   \sphericalangle H(j\omega)(G(j\omega) + K(j\omega)) = 180^o

Answer

|G(j\omega)||H(j\omega) + K(j\omega)| = 1  , and   \sphericalangle H(j\omega)(G(j\omega) + K(j\omega)) = 270^o

Answer

|H(j\omega)||G(j\omega) + K(j\omega)| = 0.5  , and   \sphericalangle H(j\omega)(G(j\omega) + K(j\omega)) = 90^o

Answer

|H(j\omega)||G(j\omega) + K(j\omega)| = 1  , and   \sphericalangle H(j\omega)(G(j\omega) + K(j\omega)) = 180^o

Answer

|H(j\omega)||G(j\omega) + K(j\omega)| = 1  , and   \sphericalangle H(j\omega)(G(j\omega) + K(j\omega)) = -90^o

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Q3. Determine the gain and phase to sustain oscillations A negative feedback s...

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