Elements of electrical drives. Fundamental of mechanics. Classifications of mechanical loads. Speed-torque characteristics of electrical motors: brush-type DC motors, brushless DC motors, induction motors and synchronous motors. Joint speed-torque characteristics of electrical motors and mechanical loads: bidirectional and four-quadrant electrical drives. Dynamics of electrical drives and stability. Velocity time profiling. DC drive system: speed control, phase-controlled DC drive, chopper-controlled DC drive and electrical braking. AC drive system: speed control, variable voltage drive, variable frequency drive, scalar control, soft starters, vector control and electrical braking.