Star Delta Starter Working Principle and Circuit Diagram: This star delta starter method of starting of cage induction motors is based upon the principle that with 3 windings connected in star,…
Starting of Electric Drives: The most important processes associated with controlled electric drives are (i) starting, (ii) speed control (iii) braking, (iv) reversal of direction of rotation. All these are…
Three Phase AC Series Commutator Motor: This machine has a 3-phase stator winding similar to that of an ordinary induction motor and may be wound for high voltage if required.…
Schrage Motor - Connection Diagram, Advantages, Disadvantages and Applications: Variable Speed Commutator Type 3-Phase Induction Motor (Schrage Motor). This is also an improvement of the plain induction motor designed to…
Electric Motor Speed Torque Characteristics: A Electric motor speed torque characteristics is defined as the relationship between the speed at which it operates and the torque it develops, ω = f(T).…
Protective Devices and Interlocks: Protective devices must be incorporated in the control circuit (or circuits) to interrupt the flow of current to the motor to guard against overloads or other…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 9: 402. Desired illumination level on the working plane depends upon (a) age group of observers. (b) whether the object…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 3: 102. The most suitable motor for a steel mill requiring a motor having high starting torque, wide speed range…