types and construction of dc machines ppt

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DC Generators | PPT

construction of a dc machine practical dc machine sectional view of dc machine 4. YOKE -Acts as outer frame of the machine - Mechanical support -Low reluctance path for magnetic flux …

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PPT: DC Machines | Basic Electrical Technology

A DC machine works on the principle of electromagnetic induction. When a direct current is supplied to the field winding, it creates a magnetic field. This magnetic field interacts with the armature winding, which is connected to a load, causing the rotor to rotate and generate mechanical energy. 4.

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INTRODUCTION OF DC MACHINE ppt | PPT

A. Aayushkumar944482. INTRODUCTION OF DC MACHINES ELECTRICAL MACHINES, INTRODUCTION OF DC MACHINES. Education. 1 of 9. Download now. INTRODUCTION OF DC MACHINE ppt - …

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Types of DC Motors: Series, Shunt, Compound, Permanent …

The construction of a DC shunt motor is similar to other types of DC motors, as shown in the figure. This motor can consist of basic parts such as field windings (stator), a commutator, and an armature (rotor). The working principle of a DC shunt motor is whenever a DC motor is turned ON.

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Dc motors and its types | PPT

Dc motors and its types - Download as a PDF or view online for free. ... Dc machines (Generator & Motor) ... CONSTRUCTION • DC motor consist of 2 windings… 1. Field winding. 2. Armature winding. • Field winding is stationary and armature winding can rotate freely. • Field windings when given DC supply, magnetic field is produced.

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construction and parts of DC generator | PPT

Main partsThe two major. Other parts Eye bolt . Yoke Its main. Pole s The magnetic. Field winding Made. Armature The armature. Commutat or It is. Brush es Made with. construction and parts of DC generator - Download as a PDF or view online for free.

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Testing of DC Machines: Objectives, Types, and Methods | PPT …

Testing of DC Machines: Objectives, Types, and Methods. This document discusses different methods for testing DC machines. It describes the objectives of testing as determining if a machine's performance matches its design specifications and investigating any variations. Three main testing methods are outlined: direct, indirect, …

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NPTEL :: Electrical Engineering

Operating Principles of DC Machines; Constructional Features of DC Machines; Generated EMF and Torque in DC Machines; Armature Reaction; Commutation in DC …

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PPT

DKT 123 DC Machine. Contents • Overview of Direct Current Machines • Construction • Principle of Operation • Types of DC Machine • Power Flow Diagram • Speed Control. LEARNING OBJECTIVES • Upon completion of the chapter the student should be able to: • State the principle by which machines convert mechanical energy to …

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(PPT) Chapter 4 DC machines | Getahun Seifu

Electrical Machines Lab Slides: Separately-Excited DC Motors. Tareq Foqha. Download Free PDF. View PDF. Electrical Machines -1 Lecture Notes Prepared By. caren chepkirui. Download Free PDF. View PDF. AC Generators and Motors Course No: E03-008 Credit: 3 …

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PPT

DC Machines. Jul 14, 2014. 4.84k likes | 8.73k Views. Chapter 3. DC Machines. Mechanical system. Electrical system. Coupling Magnetic Fields. Electric Machines . e, i. e, i. T, n. Motor. Energy Flow. …

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PPT

The change of current direction is realized electronically. (1) Changing armature voltage (d) (Speed vs Torque) simplicity of control, speed is proportional to the supplied voltage const. (3) Changing …

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DC Motor

A DC motor is defined as a class of electrical motors that convert direct current electrical energy into mechanical energy. From the above definition, we can conclude that any electric motor that is operated using direct current or DC is called a DC motor. We will understand the DC motor construction and how a DC motor converts the supplied DC ...

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Types of DC Motors and Their Characteristics

DC Motor Speed Characteristics. When a load torque is applied to a motor, the motor will slow down due to the load opposing the machine's rotation. Eventually, the machine's electromagnetic torque will equal the load torque and a new steady-state speed will be reached. How the speed changes depends on the type of field connections.

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PPT

DKT 213 CHAPTER 4 Introduction to DC Machine. Contents • Overview of Direct Current Machines • Construction • Principle of Operation • Types of DC Machine • Power Flow Diagram • Speed Control. LEARNING OBJECTIVES • Upon completion of the chapter the student should be able to: • State the principle by which machines convert …

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Introduction to DC Machine

2 Contents Overview of Direct Current Machines Construction. Principle of Operation Types of DC Machine Power Flow Diagram Speed Control. 3 LEARNING OBJECTIVES …

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Dc Motor Construction and Working | PPT

AC motor DC motor. 4. After this slide you can watch a video based on this PPT or you can skip it. 5. Construction •The outer part of the motor is generally static, which is known as stator. •Stator consist of a …

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synchronous machine construction | PPT

2. Alternator Slide No.4CUH Slide Synchronous generator or AC generator is a device which converts mechanical power in the form of A.C. It works on the principle of ELECTRO MAGNETIC INDUCTION and it is also called as Alternator. An alternator consists of armature winding and field magnet, but the difference between the …

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Construction and Working Principle of DC Generators

A DC generator operates on the principle of electromagnetic induction i.e. when the magnetic flux linking a conductor changes, an EMF is induced in the conductor. A DC generator has a field winding and an armature winding. The EMF induced in the armature winding of a DC generator is alternating one and is converted into direct …

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PPT of DC machine.pptx

A DC machine is an electromechanical energy alteration device. The working principle of a DC machine is when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque that rotates the dc motor. The DC machines are classified into two types such as DC generator as well as DC …

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DC Generator : Construction, Working Principle,Types, …

Construction. A DC generator is also used as a DC motor without changing its construction. Therefore, a DC motor otherwise a DC generator can be generally called a DC machine. The construction of a 4-pole DC generator is shown below. This generator comprises of several parts like yoke, poles & pole shoes, field winding, an armature core, …

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PPT

Contents • Overview of Direct Current Machines • Construction • Principle of Operation • Types of DC Machine • Power Flow Diagram • Speed Control. …

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electrical machines | PPT

Jan 30, 2017 • Download as PPTX, PDF •. 13 likes • 15,487 views. M. mahesh babu. electrical machines. Education. 1 of 59. Download now. electrical machines - Download as a PDF or view online for free.

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(PPT) Chapter 4 DC machines | Getahun Seifu

Electrical Machines Lab Slides: Separately-Excited DC Motors. Tareq Foqha. Download Free PDF. View PDF. Electrical Machines -1 Lecture Notes Prepared By. caren chepkirui. Download Free PDF. View PDF. …

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PPT

Contents • Overview of Direct Current Machines • Construction • Principle of Operation • Types of DC Machine • Power Flow Diagram • Speed Control. LEARNING OBJECTIVES • Upon …

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DC Generator

E.M.F Equation of DC generator. The emf equation of the DC generator is given by the equation: (begin {array} {l}E_g=frac {Pphi ZN} {60 A}end {array} ) where. Z is the total number of armature conductor. P is the number of poles in a generator. A is the number of parallel lanes within the armature. N is the rotation of armature in r.p.m.

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DC Machine – Construction, Working, Types and …

Construction of DC Machine. The DC machine consists of Yoke, Pole, and Pole shoe, Armature core, Field Winding, Armature Winding, Commutator, Brushes, shaft, and Bearings. Let's explain each part in detail with applications. Yoke or Frame. The yoke is also known as the frame. See more

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Dc machines | PPT

DC MOTORS.ppt. DC MOTORS.ppt ... 2016 Ch. 16 DC Machines 13 Construction • The main parts of a DC machine are – Yoke – Poles, pole shoes. – Field Coils. – Armature. – Commutator. ... 2016 …

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PPT

Chapter 6DC and AC Machines. Introduction • An electrical machine is link between an electrical system and a mechanical system. • Conversion from mechanical to electrical: generator • Conversion from electrical to mechanical: motor. Introduction Machines are called • AC machines (generators or motors) if the electrical system is AC.

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Construction and Working Principle of DC Motors

Here is the schematic diagram of a DC Motor. A DC motor consists of six main parts, which are as follows. Yoke. The outer frame of a DC motor is a hollow cylinder made up of cast steel or rolled steel is known as yoke. The yoke serves following two purposes. It supports the field pole core and acts as a protecting cover to the machine.

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Working of synchronous machine, Construction of

Similar to Working of synchronous machine, Construction of synchronous machine, Types of synchronous machine, Application of synchronous machine DC MOTORS.ppt Unit 3, machines.pptx

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Dc motor construction | PPT

12. FIELD WINDING OF DC MOTOR • The field winding of DC motor are made with field coils (copper wire) wound over the slots of the pole shoes in such a manner that when field current flows through it. • Then adjacent poles have opposite polarity are produced. • The field winding basically form an electromagnet, that produces field flux …

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Unit5:- D.C Machines | PPT

1. UNIT 5 DC MACHINES. 2. Introduction • The direct current (dc) machine can be used as a motor or as a generator. • DC Machine is most often used for a motor. • The major advantages of dc machines are the easy speed and torque regulation. • However, their application is limited to mills, mines and trains.

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Dc motor ppt | PPT

Presentation on Dc Motor. Education. 1 of 23. Download now. Dc motor ppt. DC MOTOR. Subhajit Bose (03) Shuvankar Das (02) Binoy. History of DC. CONSTRUCTION.

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dc generators ppt

DC generator converts mechanical energy into. electrical energy. when a conductor move in a. magnetic field in such a way conductors cuts. across a magnetic flux of lines and e.m.f. produces in a generator and it is defined by. faradays law of electromagnetic induction e.m.f. causes current to flow if the conductor circuit.

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DC MOTOR

Windings in DC Machine •In any dc machines, there are two windings: 1. Field winding 2. Armature winding • Out of these, the field winding is stationary which does not move at all and armature winding is mounted on a shaft. So it can rotate freely. • Connection of windings for operation as motor: To operate the dc machine as a motor, the ...

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Working,construction,History Types and …

6. CONSTRUCTION: A DC motor or machine consists of two windings namely field winding and armature winding. The field winding is stationary and the armature winding can rotate. The field winding …

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Types and Construction of Synchronous Generators | PPT

This document outlines and compares two types of synchronous machines - cylindrical rotor type and salient pole rotor type generators. It describes their construction, working principles, types, and applications. The key differences are that cylindrical rotor type generators have a smooth cylindrical rotor, uniform air gap, operate …

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CONSTRUCTION OF DC MACHINE UNIT-III BY S RATNA …

Schematic representation of this type is shown in the Fig. 3.3. l. Vt Terminal voltage field winding of this type of generator has large number of turns of thin wire. So length of such winding is more with less cross-sectional D.C. supply LOAD Fig. 3.3.1 Separately excited generator area.

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Trinity College of Engineering & Technology's Lecture on DC Machines | PPT

BalramGyadari1. This document provides an overview of DC machines, including their construction, principles of operation, and characteristics. It discusses DC machines functioning as generators and motors. Key points include: - DC machines can operate as generators, converting mechanical energy to electrical energy, or motors, …