![]() Performance and Design of D.C Machines – by Clayton & Hancock, BPB PublishersĢ. Methods of Testing – direct, indirect and regenerative testing – brake test – Swinburne’s test – Hopkinson’s test – Field’s test – Retardation test – separation of stray losses in a d.c. machines: Losses – Constant & Variable losses – calculation of efficiency – condition for maximum efficiency Principle of 3 point and 4 point starters – protective devices. Motors: Armature voltage and field flux control methods. ![]() – Torque equation – characteristics and application of shunt, series and compound motors – Armature reaction and commutation. Motors :D.C Motors – Principle of operation – Back E.M.F. Load Characteristics of Generators:Load characteristics of shunt, series and compound generators – parallel operation of d.c series generators – use of equalizer bar and cross connection of field windings – load sharing.ĭ.C. Electrical Machines 1 Notes Pdf – EM 1 Notes Pdf Electrical Machines Pdf Notes Types of D.C Generators:Methods of Excitation – separately excited and self excited generators – build-up of E.M.F – critical field resistance and critical speed – causes for failure to self excite and remedial measures. Generator:Armature reaction – Cross magnetizing and de-magnetizing AT/pole – compensating winding – commutation – reactance voltage – methods of improving commutation. M.F Equation – ProblemsĪrmature reaction in D.C. Generators – Principle of operation – Action of commutator – constructional features – armature windings – lap and wave windings – simplex and multiplex windings – use of laminated armature – E. Generators – Construction & Operation:D.C. Click here to check all the JNTU Syllabus booksĮlectromechanical Energy Conversion:Electromechanical Energy conversion – forces and torque in magnetic field systems – energy balance – energy and force in a singly excited magnetic field system, determination of magnetic force – co-energy – multi excited magnetic field systems.ĭ.C. Note :- These notes are according to the r09 Syllabus book of JNTUH.In R13 & R15,8-units of R09 syllabus are combined into 5-units in r13 syllabus. Unit 4 Link:Unit 4 Notes Unit 5 Link:Unit 5 Notes ![]() Unit 5 Link – Unit 5 Notes Old Material Links ![]() Electrical Machines 1 Pdf Notes – EM 1 Pdf Notes Electrical Machines 1 Pdf Notes – EM 1 Pdf Notes Latest Material Links The Electrical Machines 1 Notes Pdf – EM 1 Notes Pdf book starts with the topics covering Electromechanical Energy conversion, Construction & Operation, Generator:Armature reaction, separately excited and self excited generators, Load characteristics of shunt, Principle of operation, Speed control of d.c. Here you can download the free lecture Notes of Electrical Machines 1 Pdf Notes – EM 1 Pdf Notes materials with multiple file links to download. ![]()
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