Explanation

Modulation index = (Vmax - Vmin) / (Vmax + Vmin)

= (10 - 2) / (10 + 2)

= 8 / 12

= 0.67

Explanation

State-space method models MIMO systems using vectors and matrices, handling multiple inputs and outputs efficiently.

It provides a comprehensive framework for time-domain analysis and modern control design.

Explanation

PID controllers combine P, I, and D actions to reduce error, improve stability, and respond to changes effectively.

They help achieve faster, accurate, and stable system performance in closed-loop control.

Explanation

DSM monitors and adjusts consumer load in real time to match supply and prevent grid stress.

It helps in efficient energy usage and maintains stability in a smart grid.

Explanation

Controlled rectifiers (like SCR-based converters) convert AC to DC with adjustable output by controlling firing angles.

They are widely used where variable DC voltage is needed from an AC supply.

Explanation

PWM adjusts the duty cycle of the switching device to maintain constant output voltage.

It provides high efficiency and precise voltage regulation in switch-mode power supplies.

Explanation

Z-transform converts discrete-time signals into a complex frequency domain for analysis.

It simplifies solving difference equations and designing digital filters.

Explanation

Newton-Raphson method converges rapidly even for large, complex power systems.

It uses iterative linearization, making it more efficient than Gauss-Seidel for large-scale load flow analysis.

Explanation

High-impedance grounding limits the current during ground faults, protecting equipment.

It reduces damage and arc flash hazards while allowing system operation to continue.

Explanation

In a series-wound DC motor, the field winding is in series with the armature, so flux depends on load current.

As load changes, flux changes → speed changes significantly, making it unsuitable for constant-speed applications.