Rotating Electrical Machines
Rotating Electrical Machines: We Know that electromechanical energy conversion takes place whenever a change in flux is associated with mechanical motion. Speed voltage is generated in a coil when there…
Rotating Electrical Machines: We Know that electromechanical energy conversion takes place whenever a change in flux is associated with mechanical motion. Speed voltage is generated in a coil when there…
Methods of Ventilation and Cooling of Electrical Machines: It is necessary to provide suitable ventilation and cooling of electrical machines so that the temperature rise at any part of the…
Electrical Braking of Polyphase Induction Motors: Electrical Braking of Polyphase Induction Motors which consists of different types, namely, Plugging (or Counter-Current Braking) Dynamic (or Rheostatic) Braking Regenerative Braking 1. Plugging…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 8: 352. The luminous efficiency of a sodium vapour lamp is ............ lumens per watt. (a) 40-50 (b) 50-100 (c)…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 5: 202. In resistance welding, the magnitude of current is controlled (a) by varying the primary voltage of the welding…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 2:Â 52. The pair used for frequency converters is (a) squirrel cage induction motor and synchronous motor. (b) slip-ring induction…
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Dynamics of Electrical Drives Articles: Torque Equation of Motor Load System: A motor generally drives a load (machine) through some transmission system. While motor always rotates, the load may rotate…