Section outline


  • Lecture Objectives:

    • To teach the students about the working principle,  different characteristics and speed control of DC motor.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand working principle of DC motor
    • Understand significance of back e.m.f.
    • Learn about the torque-speed  characteristics
    • Understand the speed regulation


    Lecture Contents:

    • Principle of motor
    • Back emf
    • Torque
    • Torque/speed, torque/current, speed/current characteristic
    • speed  regulation
    • Speed control
    • starting