Question

For making an unstable system stable
1. Gain of the system should be increased.
2. Gain of the system should be decreased.
3. The number of zeros to the loop transfer function should be increased
4. The number of poles to the loop transfer function should be increased

Answer 1

Correct Answer - Option 1 : Gain of the system should be increased.

• The gain of the system should be increased to make an unstable system stable.
• For positive feedback of the system, the gain is more and for negative feedback, the gain is reduced for which the stable system can become unstable.
• Also, the gain is inversely proportional to the steady-state error. If the gain increases the steady-state error decreases and vice versa.