Industrial Drives and Control — Winter 2025

Define term “Solid state control”.

Draw block diagram of DC drive. Explain in brief about its components.

Explain working principle of speed control of DC motor with single phase Semi- controlled full bridge converter.

Draw and explain “Torque proportional to square of the speed” characteristic.

Draw and explain Constant load torque characteristics.

Write a brief note on different type of loads for drive system.

Write a short not on steady state stability of Electric Drive system,

Draw speed-torque characteristic of DC separately excited motor.

What is continuous conduction of DC motor?

Write a technical note on: Load equalization in Electrical drives.

What is duty cycle? Explain it with reference to chopper circuit.

What is Constant Power operation of Drive?

Draw and explain Closed loop speed control scheme for DC motor with appropriate block diagram.

Explain term “Harmonics”

Why DC series motor is used for high torque application?

Explain speed control of DC motor with chopper circuit with neat diagram.

Draw characteristics of Induction motor(IM).

What is sub-synchronous motoring? Explain.

Explain working of Static Scherbius drive system with neat diagram.

Explain ABC reference frame in brief.

What is Solar powered Drive? Explain in brief.

Write a short note on Servo motor drive.

What is stator control of induction motor? Explain in brief.

Explain term “Synchronous speed”.

Write a short note on Direct torque control.