GATE NOTES

Electrical Machines + Electrical & Electronics Measurements(Made Easy Class Room Note)

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Electrical Machines : Electromechanical energy conversion principles, DC machines: separately excited, series and shunt, motoring and generating mode of operation and their characteristics, starting and speed control of dc motors; Synchronous machines: cylindrical and salient polemachines, performance, regulation and parallel operation of generators, starting of synchronous motor, characteristics; Types of losses and efficiency calculations of electric machines.Single phase transformer: equivalent circuit, phasor diagram, open circuit and short circuit tests, regulation and efficiency; Three phase transformers: connections, parallel operation; Auto‐transformer, Three phase induction motors: principle of operation, types, performance, torque-speed characteristics, no-load and blocked rotor tests, equivalent circuit, starting and speed control; Operating principle of single phase induction motors.

Electrical & Electronics Measurements: Measurement of voltage, current, power, energy and power factor; Error analysis.Bridges and Potentiometers, Instrument transformers, Digital voltmeters and multimeters, Phase, Time and Frequency measurement; Oscilloscopes.
Such notes were taken from a Made Easy coaching center and these notes cover all the topics that are important from GATE's point of view.For further information, please email us at contact.gatenotes.in@gmail.com