sc JNTUA B.TECH R 20 2-4 Syllabus For Ac machines PDF 2022 – Cynohub


JNTUA B.TECH R 20 2-4 Syllabus For Ac machines PDF 2022


JNTUA B.TECH R 20 2-4 Syllabus For Ac machines PDF 2022

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You will be able to find information about Ac machines 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 Ac machines after reading this blog. Ac machines has 5 units altogether and you will be able to find notes for every unit on the CynoHub app. Ac machines 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 Ac machines are mentioned below in detail. If you are having a hard time understanding Ac machines 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.

Ac machines Unit One

Fundamentals of AC machine windings

Physical arrangement of windings in stator and cylindrical rotor; slots for windings; single turn coil -active portion and overhang; full-pitch coils, concentrated winding, distributed winding, winding axis, Air-gap MMF distribution with fixed current through winding -concentrated and distributed, Sinusoidally distributed winding, winding distribution factors.

Ac machines Unit Two

Induction Machines

Operating principle, Construction, Types (squirrel cage and slip-ring), Starting and Maximum Torque, Equivalent circuit, Phasor Diagram, Torque-Slip Characteristics, power flow in induction machines, Losses and Efficiency, No load and blocked rotor test, Circle diagram, performance characteristics, Numerical problems. Methods of starting, braking and speed control for induction motors, Doubly-Fed Induction Machines, crawling and cogging. Analysis of 3 phase induction motors with single phasing operation.

Get Complete Lecture Notes for Ac machines on Cynohub APP

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Ac machines Unit Three

Synchronous generators

Constructional features, cylindrical rotor synchronous machine -generated EMF, equivalent circuit and phasor diagram, armature reaction, synchronous impedance, voltage regulation, EMF, MMF, ZPF and ASA methods. Operating characteristics of synchronous machines, Salient pole machine -two reaction theory, analysis of phasor diagram, power angle characteristics. Parallel operation of alternators -synchronization and load division.

Ac machines Unit Four

Synchronous motors

Principle of operation, methods of starting, Phasor diagram of synchronous motor, variation of current and power factor with excitation, V and inverted V curves, Hunting and use of damper bars, Synchronous condenser and power factor correction, Excitation and power circles.

Ac machines Unit Five

Single-phase induction motors

Constructional features, double revolving field theory, equivalent circuit, determination of parameters. Split-phase starting methods and its applications, capacitor start and run singlephase motors, reluctance single phase motors, stepper motors, BLDC motors.

Ac machines Course Objectives

The students will be able to:
Understand the fundamentals of AC machines, know equivalent circuit performance characteristics.
Understand the methods of starting of Induction motors.
Understand the methods of starting of Synchronous motors. Understand the parallel operation of Alternators.

Ac machines Course Outcomes

At the end of this course, students will be able to: Understand the basics of ac machine windings, construction, principle of working, equivalent circuit of induction and synchronous machines.
Analyze the phasor diagrams of induction and synchronous machine, parallel operation of alternators, synchronization and load division of synchronous generators.
Apply the concepts to determine V and inverted V curves and power circles of synchronous motor.
Analyze the various methods of starting in both induction and synchronous machines.

Ac machines Text Books

1. A. E. Fitzgerald and C. Kingsley, “Electric Machinery”, McGraw Hill Education, 2013.
2. P. S. Bimbhra, “Electrical Machinery”, Khanna Publishers, 2011.

Ac machines Reference Books

1. M. G. Say, “Performance and design of AC machines”, CBS Publishers, 2002.
2. I. J. Nagrath and D. P. Kothari, “Electric Machines”, McGraw Hill Education, 2010.
3. A. S. Langsdorf, “Alternating current machines”, McGraw Hill Education, 1984.
4. P. C. Sen, “Principles of Electric Machines and Power Electronics”, John Wiley & Sons, 2007.Online Learning Resources:

Scoring Marks in Ac machines

Scoring a really good grade in Ac machines 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 examinations . This video will also inform students on how to score high grades in Ac machines. There are a lot of reasons for getting a bad score in your Ac machines exam and this video will help you rectify your mistakes and help you improve your grades.

Information about JNTUA B.Tech R 20 Ac machines 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.

Get Complete Lecture Notes for Ac machines on Cynohub APP

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