Control Systems Practice Questions

Generate GATE-level questions on Stability. Focus on: 1. Absolute stability and BIBO stability. 2. Routh-Hurwitz criterion and its applications. 3. Relative stability and Location of poles.

Generate GATE-level questions on Compensators and Controllers. Focus on: 1. Lead, Lag, and Lead-Lag compensators: Frequency response characteristics. 2. P, PI, and PID controllers: Characteristics and Tuning effects. 3. Realization of compensators using electrical networks.

Generate GATE-level questions on Feedback effects. Focus on: 1. Open-loop vs Closed-loop systems. 2. Effect of feedback on Sensitivity, Stability, and Noise. 3. Disturbance rejection and Regenerative feedback.

Generate GATE-level questions on Frequency Domain analysis. Focus on: 1. Bode plots: Gain margin and Phase margin. 2. Polar plots and Nyquist stability criterion. 3. Constant M and N circles, Nichol's chart basics.

Generate GATE-level questions on System Modeling. Focus on: 1. Differential equations, Transfer function, and Impulse response. 2. Block diagram reduction techniques and Signal flow graphs (Mason's Gain Formula). 3. Modeling of mechanical (Translational/Rotational) and electrical systems.

Generate GATE-level questions on Root Locus. Focus on: 1. Rules for construction of Root Locus. 2. Break-away/Break-in points and Angle of arrival/departure. 3. Stability analysis and Parameter variation using Root Locus.

Generate GATE-level questions on State Space analysis. Focus on: 1. State equations, State transition matrix (e^At), and Solution of state equations. 2. Controllability and Observability (Kalman/Gilbert tests). 3. Transfer function from state model and vice versa.

Generate GATE-level questions on Time Domain analysis. Focus on: 1. Standard test signals and Response of First and Second order systems. 2. Time domain specifications: Rise time, Peak time, Settling time, and Overshoot. 3. Steady-state error and Error constants (Kp, Kv, Ka).