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JNTUK B.TECH R20 2-1 Syllabus For Dc machines and transformers PDF 2022

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JNTUK B.TECH R20 2-1 Syllabus For Dc machines and transformers PDF 2022

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You will be able to find information about Dc machines and transformers along with its Course Objectives and Course outcomes and also a list of textbook and reference books in this blog.You will get to learn a lot of new stuff and resolve a lot of questions you may have regarding Dc machines and transformers after reading this blog. Dc machines and transformers has 5 units altogether and you will be able to find notes for every unit on the CynoHub app. Dc machines and transformers can be learnt easily as long as you have a well planned study schedule and practice all the previous question papers, which are also available on the CynoHub app.

All of the Topic and subtopics related to Dc machines and transformers are mentioned below in detail. If you are having a hard time understanding Dc machines and transformers or any other Engineering Subject of any semester or year then please watch the video lectures on the official CynoHub app as it has detailed explanations of each and every topic making your engineering experience easy and fun.

Dc machines and transformers Unit One

Electromechanical Energy Conversion and introduction to DC machines

Principles of electromechanical energy conversion – singly excited and multi excited systems- calculation of force and torque using the concept of co-energy.

Construction and principle of operation of DC machines – EMF equation for generator – Excitation techniques– characteristics of DC shunt generator –applications of DC Generators

Dc machines and transformers Unit Two

Operation of DC motors

Back-emf and torque equations of dc motors – Armature reaction and commutation – characteristics of separately-excited, shunt, series and compound motors – losses and efficiency – applications of dc motors.

Necessity of a starter – starting by 3 point and 4-point starters.

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Dc machines and transformers Unit Three

Speed Control of motors and Testing of DC Machines

Speed control by armature voltage and field control – testing of DC machines – brake test, Swinburne’s method – principle of regenerative or Hopkinson’s method – retardation test – field’s test- separation of losses.

Single-phase Transformers

Types and constructional details – principle of operation –emf equation – operation on no load and on load – lagging, leading and unity power factors loads –phasor diagrams of transformers – equivalent circuit.

Dc machines and transformers Unit Four

Performance and testing of transformers and auto transformers

Regulation – losses and efficiency – effect of variation of frequency and supply voltage on losses – all day efficiency.

Tests on single phase transformers – open circuit and short circuit tests – Sumpner’s test – separation of losses – parallel operation with equal voltage ratios – auto transformer – equivalent circuit – comparison with two winding transformers.

Dc machines and transformers Unit Five

3-Phase Transformer

Polyphase connections- Y/Y, Y/ Δ, Δ/Y, Δ/ Δ and open Δ- third harmonics in phase voltages

three winding transformers- transients in switching –off load and on load tap changers- Scott connection.

Dc machines and transformers Course Objectives

To Understand the construction, principle of operation and performance of DC machines.

To Learn the characteristics, performance, methods of speed control and testing methods of DC motors.

To predetermine the performance of single phase transformers with equivalent circuit models.

To Understand the methods of testing of single-phase transformer.

To Analyze the three phase transformers and achieve three phase to two phase conversion.

Dc machines and transformers Course Outcomes

At the end of the course, student will be able to:

Assimilate the concepts of electromechanical energy conversion.

Mitigate the ill-effects of armature reaction and improve commutation in dc machines.

Understand the torque production mechanism and control the speed of dc motors.

Analyze the performance of single phase transformers.

Predetermine regulation, losses and efficiency of single phase transformers.

Parallel transformers, control voltages with tap changing methods and achieve three-phase to two-phase transformation.

Dc machines and transformers Text Books

Electrical Machines by P.S. Bhimbra, Khanna Publishers,7th edition, 2011.

Electric Machinery by A.E.Fitzgerald, Charleskingsley, Stephen D.Umans, TMH, 6th edition, 2003.

Dc machines and transformers Reference Books

Electrical Machines by D. P.Kothari, I. J. Nagarth, McGraw Hill Publications, 4th edition, 2010.

Electrical Machines by R.K.Rajput, Lakshmi publications, 5th edition.

Electrical Machinery by Abijith Chakrabarthi and Sudhipta Debnath, McGraw Hill, 1st edition.

Electrical Machinery Fundamentals by Stephen J Chapman McGraw Hill education, 4th edition, 2010.

Electric Machines by MulukutlaS.Sarma & Mukeshk Pathak, CENGAGE Learning, 1st edition, 2008.

Theory & Performance of Electrical Machines by J.B.Guptha. S.K.Kataria& Sons, 1st edition, 2009.

Scoring Marks in Dc machines and transformers

Scoring a really good grade in Dc machines and transformers is a difficult task indeed and CynoHub is here to help!. Please watch the video below and find out how to get 1st rank in your B.tech examinations . This video will also inform students on how to score high grades in Dc machines and transformers. There are a lot of reasons for getting a bad score in your Dc machines and transformers exam and this video will help you rectify your mistakes and help you improve your grades.

Information about JNTUK B.Tech R20 Dc machines and transformers was provided in detail in this article. To know more about the syllabus of other Engineering Subjects of JNTUH check out the official CynoHub application. Click below to download the CynoHub application.

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