How to prepare Electrical machines for GATE (EE)

Lesson 9 of 15 • 64 upvotes • 14:00mins

Anvesh Sameer

This lesson will guide you how to prepare Electrical machines for GATE and also discussed main points regarding where to start. 3 golden questions you need to ask yourself before practicing questions from any chapter, how to analyze the questions before answering them are also discussed. Detailed syllabus for GATE 2019 electrical machines is given below Electrical Machines Single phase transformer: equivalent circuit, phas or diagram, open circuit and short circuit tests, regulation and efficiency; Three phase transformers: connections, parallel operation; Auto ‐ transformer, Electromechanical energy conversion principles, DC machines: separately excited, series and shunt, mot oring and generating mode of operation and their characteristics, starting and speed control of dc motors; Three phase induction motors: principle of operation, types, performance, torque- speed characteristics, no -load and blocked rotor tests, equivalent c ircuit, starting and speed control; Operating principle of single phase induction motors; Synchronous machines: cylindrical and salient pole machines, performance, regulation and parallel operation of generators, starting of synchronous motor, characterist ics; Types of losses and efficiency calculations of electric machines