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 More...

by admin | Published 4 months ago
By admin On Tuesday, December 24th, 2019

For Colleagues Who do Not Have an Opportunity to do this in Practice for Students and Their Professors…

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 More...

By admin On Friday, November 29th, 2019

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 More...

By admin On Sunday, November 17th, 2019

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 More...

By admin On Friday, August 16th, 2019

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 More...

By admin On Saturday, July 27th, 2019

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 More...

By admin On Thursday, July 18th, 2019
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Some Practice About Repairing of Power Transformers

Author & Photos: Radoje Jankovic A. Questions: 1. What showing this figure? 2. What is the purpose of this electrical device? 3. What is name of the part in grey color? What material More...

By admin On Wednesday, July 17th, 2019

Illustrated Test Questions

Author of photos and questions: Radoje Jankovic 1. a.  What shows this photo? b. Describe in details. 2. a.  What is shown in this photo? b. Name all parts in the right side device ! Name the More...

By admin On Sunday, July 7th, 2019

Some solved practical problems of transformers

Author: Radoje Jankovic About the Author: Radoje Jankovic. Electrician, Technician, Electrical Engineer, PhD, Ecologist, Environmentalist, Engineering Writer, Designer, Educator… Massive More...