The whole process of winding the collector rotor of a

Author: Radoje Jankovic Photos from my friend, Goran Miloradovic. INTRODUCTORY EXPLANATIONS Likeand always, I will not deal with theory, because there are thousands and thousands of theoretical works and articles about electric motors on the Internet, so they have become few and boring. Just, everyone who masters one type of rotary electric machine at school […]

© Electrical machines through practical questions and answers – Part

©Električne mašine kroz praktična pitanja i odgovore – Deo 3 Autor: Radoje Jankovic. II. OSNOVNA ZNANJA O ROTACIONIM ELEKTRIČNIM MAŠINAMA MOTORIMA I GENERATORIMA, DEFINICIJE I SLIKE – Nastavak © Electrical machines through practical questions and answers – Part 3 Author: Radoje Jankovic. II. BASIC KNOWLEDGE OF ROTARY ELECTRICAL MACHINES MOTORS AND GENERATORS, DEFINITIONS AND IMAGES […]

© Electrical machines through practical questions and answers – Part

Author: Radoje Jankovic. II.BASIC KNOWLEDGE OF ROTATIONAL ELECTRICAL MACHINES, MOTORS AND GENERATORS, DEFINITIONS AND IMAGES 1.Make a comparison: alternator-transformer-asynchronous electric motor! These are the three types of the most important electric machines that allow us to get rid of hard work, especially today in the modern technological environment. Power plant with alternators – generators is […]

© Electric machines through practical questions and answers – Part

© Electric machines through practical questions and answers  – Part 1 Introduction Author: Radoje Jankovic. In this, more extensive series of questions with answers in the field of electric machines, I tried to elaborate on this area from the point of view of practice and everyday use of rotating electric machines of all types in […]

1oo Practical illustrated test questions from electrical machines – 1

Author: Radoje Janković. Photos: Author, colleagues and friends. Note: I designed and formed all the questions on the “spot” according to the photo. I did not use any literature. Introduction In this group of issues, electric motors, servicing and rewinding are covered in almost detail. All questions are from practice. Each question is illustrated with […]

For Colleagues Who do Not Have an Opportunity to do

Author: Radoje Jankovic Photos of my colleagues Adnan Dudic and Sumedin Lušija. For CollegesWho do Not Have an Opportunity to this in Practice for Students and Their Professors… One brief overview of the large DC motors of Westingouse’s production in the ironworks, the rolling mill in Zenica during the revitalization of old electrical equipment – […]

Electric machines Practice test question

Author: Radoje Jankovic Photos from my friend winders 1. Winder rewound this small collector rotor. In this picture you see one work operation performed by a winder. What is a work operation and why is it necessary? 2. a) What is the name of this part and what type of electric motor is it? Write the […]

DC motors connection schemes

Author and drawing: Radoje Jankovic Old letter designations for DC machines: 1. A – B, inductor windings, rotors 2. C – D, parallel stator coils of main poles 3. E – F, regular stator coils of main poles 4. G – H, auxiliary pole coils together with compensating coils 5. I – K, independent field […]

Illustrated Rewinding the Rotor of Small Universal Motor

Author: Radoje Jankovic Here is illustrated procedure for rewinding the rotor of small universal AC motor. The photos are from my friend rewinder of electrical machines and other devices. Before taking out the old winding you must to draw the winding diagram of the rotor. This photo shows the view of rotor from collector side… […]

DC Motors a Little From Practice

Cross section of a DC motor with four main poles and four auxiliary poles. Second figure shows connection diagram of motor winding and leads for connecting to DC busbars. Russian manufacture. From Jankovic’s archive