construction detail of dc machih

DC Motor Starters and Their Circuit Diagram | Electrical …

FIGURE 2: Three-point manual DC motor starter circuit diagram. The disadvantage of this type of starter is that it may drop out if field resistance control is used to weaken the field for increased motor speed. This type of starter cannot be used for a series machine. Figure 3 shows a …

(PDF) DESIGN AND FABRICATION OF SHEET ROLLING …

Pyramidal type machine This machine is of pinch type here only the top roll serves as a driven, bottom roller are idler and rotates on friction with the work metal blank. 6.1 Sheet rolling machine 17 7.

Design of Electrical Apparatus Solved Problems

T.VIJAYAKUMAR, AP/EEE, VSA GROUP OF INSTITUTIONS DESIGN OF ELECTRICAL APPARATUS SOLVED PROBLEMS 1. A 350 KW, 500V, 450rpm, 6-pole, dc generator is built with an armature diameter of 0.87m and core length of 0.32m. The lap wound

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DC Motor Working Principle, Construction and Diagram …

 · CONSTRUCTION OF DC MOTOR All DC machines mainly consist of two parts. One is the stator and the other is Rotor. The stator is a stationary part that includes yoke, pole, pole winding, and Interpoles. The stator produces the magnetic flux. The rotor of the

Construction of DC Machine (Generator & Motor)

 · Magnetic frame or Yoke. Pole Cores and Pole Shoes. Pole Coils or Field Coils. Armature core. Armature Winding. Commutator. Brushes and Bearings. The diagram given below represents the various parts of a DC machine. The cross-section of a DC machine is shown in the figure below.

DC Machine

 · 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.

Characteristics of DC motors | electricaleasy

Characteristics of DC motors. Generally, three characteristic curves are considered important for DC motors which are, (i) Torque vs. armature current, (ii) Speed vs. armature current and (iii) Speed vs. torque. These are explained below for each type of DC motor. These characteristics are determined by keeping the following two relations in mind.

Construction of DC Machine

 · Construction of DC Machine. Author: Ravi Barwad Category: Electrical Articles 14 Jul 14. The main parts of DC Machine (motor or generator) are as follows: Yoke. Pole core and pole shoes. Pole coil and field coil. Armature core. Armature winding or conductor. Commutator.

EMF equation of DC machines

EMF equation of DC machines is a mathematical expression to calculate the EMF induced in a DC machine. As you know, the amount of EMF induced in a conductor depends on the number of turns of the coil and the rate of change of flux. The above equation ...

Physical Structure and Configuration of DC Machines

Configuration of DC Machines. In DC machines, the field excitation that provides the magnetizing current is occasionally provided by an external source, in which case the machine is said to be separately excited [ Figure 5 (a) ]. More often, the field excitation is derived from the armature voltage, and the machine is said to be self-excited.

DC Motor Working Principle, Construction and Diagram …

 · DC MOTOR WORKING PRINCIPLE: The DC motor working principle is that a current-carrying conductor experiences a mechanical force when placed in a magnetic field. This is known as the Lorentz force. And the direction of this force is given by FLEMING''S LEFT-HAND RULE. DC motor working principle is similar to the working principle of a DC generator.

Basic construction and working of a DC Generator. | …

DC Generator A dc generator is an electrical machine which converts mechanical energy into direct current electricity.This energy conversion is based on the principle of production of dynamically induced emf. This article outlines basic construction and working of a DC …

Construction of a DC Generator

A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. Magnetic field system, Armature and Commutator and Brushgears. The diagram of the main parts of a 4 pole DC Generator or DC Machine is shown below:

(DOC) DESIGN AND CONSTRUCTION OF AN …

DESIGN AND CONSTRUCTION OF AN INDUSTRIAL SAND SIEVING MACHINE BY OTTAH MATTHEW NDUKA (54996791) UNIVERSITY OF SOUTH AFRICA MECHANICAL ENGINEERING DEPARTMENT ENGINEERING DESIGN PROJECT EDP 401M ASSIGNMENT NUMBER: 888450 MAY 16, 2014 ABSTRACT fThe idea to develop a sand sieving machine to meet industrial requirement …

LAB MANUAL

Separation of iron losses in DC machine 10 Hopkinson''s test 11 Sumpner''s test 12 Study of three phase transformer connections 13 Load test on DC compound motor 14 Load test on DC compound generator EE6411- ELECTRICAL MACHINES I 6 AIM: S. No ...

Build DC powered refrigerator or freezer!

Build DC powered refrigerator or freezer! By Raymond Cayer Making your own DC powered refrigerator from a recycled AC refrigerator is very easy and operates at about a quarter or less of the energy of conventional refrigerators. The

Construction of DC Motor

Hi friends, In this article, I am discussing the construction of dc motor and hoping you will find it useful. Both the DC machines i.e. DC generator and DC motor have the same construction. Therefore, either machine can be used as a motor or a generator. So …

CONSTRUCTION & WORKING OF DC MACHINE

DC Generator converts the Mechanical Energy into Electrical Energy (in DC). Its working principle is Faraday''s Law of Electromagnetic Induction which states that, whenever a conductor is placed in a varying magnetic field (or conductor is moved in magnetic field), then an emf is induced in it.

DC Machine

 · This article discusses an overview of a DC machine. It is a device that is used for either the conversion of ME to EE or EE to ME depending upon its construction and operation. It acts as a generator when the coil is rotated in the magnetic field and acts as a motor when the rotor winding is given a DC supply and placed in the magnetic field.

Construction of dc Machines

Construction of dc Machines: The rotor in a dc machine is called an armature. The armature has cylindrical steel core that is composed of a stack of slotted laminations. Slots in laminations are aligned axially along rotor or shaft. Armature windings are placed in

Constructional Details of DC Machine | Construction of DC …

Constructional Details of DC Machine | Construction of DC Machine and its Components |DC Machines Constructional Features | Understanding DC MachinesHello Ev...

construction of dc machine

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

DC MACHINES

Elementary DC Machines • The armature winding of a dc generator is on the rotor with current conducted from it by means of carbon brushes.Electric Machines General • When a machine is converting electrical energy into mechanical form, it is operating in the ...

Construction of DC Motor | Electrical Concepts

 · Construction of DC Machine. A DC machine consists of two main components: Stator and Rotor. Stator is the stationary part whereas rotor is the rotating part. Stator of DC machine consists of Yoke, Field Winding, Interpoles, Compensating Winding, Brushes and End Cover. Rotor consists of armature core, armature winding, commutator and shaft.

Construction of DC Machine

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Construction of DC Motor | Electrical Concepts

 · Construction of DC Machine. A DC machine consists of two main components: Stator and Rotor. Stator is the stationary part whereas rotor is the rotating part. Stator of DC machine consists of Yoke, Field Winding, Interpoles, …

Detailed Brushless DC Motor Working Principle and …

 · Applications of Brushless DC motor. Brushless DC motors (BLDC) use for a wide variety of application requirements such as varying loads, constant loads and positioning applications in the fields of industrial control, automotive, aviation, automation systems, health care equipments etc. Computer hard drives and DVD/CD players.

Construction of DC Motor (Parts & Images) | Electrical4U

 · Construction of DC Motor (Parts & Images) A DC motor is a device that converts direct current electrical energy to mechanical energy (learn about a DC motor''s working principle ). A DC motor is constructed with: A stator is the static part of the DC machine that houses the field windings and receives the supply.

THEORY, CONSTRUCTION, AND OPERATION

direct-current (dc) electric power. The dc can be considered a particular case of the general ac, with frequency equal to zero. The frequency of an alternated circuit is measured by the number of times the currents and/or voltages change direction (polarity) in a

DC Generator : Construction, Working Principle,Types, …

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, armature winding, commutator & brushes.

4 Types of DC Motors and Their Characteristics

The field of DC motors can be a permanent magnet, or electromagnets connected in series, shunt, or compound. Coupled with a DC drive, they provide DC Motor Characteristics As you already know, there are two electrical elements of a DC motor, the field windings and the armature.The armature windings are made up of current carrying conductors that terminate at a commutator.

What is Brushless DC Motor (BLDC)? Construction & …

Construction, Working & Applications of BLDC (Brushless DC Motor) Brushless DC motors (BLDC) have been a much focused area for numerous motor manufacturers as these motors are increasingly the preferred choice in many applications, especially in the field of motor control technology. ...

(PDF) Transformer, Construction, Working, Types & …

Transformer, Construction, Working, Types & Application - Electrical Technology.pdf . × Close Log In Log In with Facebook Log In with ... A transformer being an AC machine however cannot step up or down a DC voltage or DC current. It sounds a bit weird To ...

Working Principle of DC Motor | Robu

 · A DC motor is an electrical machine which converts electrical energy into mechanical energy. The basic working principle of the DC motor is that whenever a current carrying conductor places in the magnetic field, it experiences a mechanical force. Fleming''s left-hand rule and its magnitude decide the direction of this force.