The construction of the DC machine can be done using some of the essential parts like Yoke Pole core & pole shoes Pole coil & field coil Armature core Armature winding otherwise conductor commutator brushes & bearings Some of the parts of the DC machine is discussed below Construction of DC Machine Yoke Another name of a yoke is the frame
Get Price1 The direction of rotation of a DC motor can be determined by Ampere s law Fleming s left hand rule Fleming s right hand rule Lenz s law Show Explanation 2 What will happen if DC shunt motor is connected across AC supply Will run at normal speed Will not run Will Run at a lower speed Burn due to heat produced in the field winding
Get PriceCommutator Construction in DC Machines The commutator helps in converting this alternating emf into direct current EMF This is therefore also known as mechanical converter 2 2 1 7 Armature Windings In DC Machines The windings placed in the armature is called the armature windings and is generally connected in two ways i Lap windings
Get PriceConstruction 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 brush gear
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Get PriceThe 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 It provides a path for the magnetic flux produced by the field winding Magnetic Field System
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Get PriceThe dc generators and dc motors have the same general construction In fact when the machine is being assembled the workmen usually do not know whether it is a dc generator or motor Any dc generator can be run as a dc motor and vice versa All dc machines have five principal components Magnetic frame or Yoke
Get PriceConstruction of a dc machine 1 Construction Of A DC Machine 2 4 pole DC machine 3 A DC machine consists two basic parts; • stator • rotor Yoke The outer frame of a dc machine is called as yoke It is made up of cast iron or steel
Get PriceConstruction of DC Generator Each Part Explanation Electricity generated at all the power plants is alternating i e ac in order to generate direct current i e dc a commutator is used to convert the generated ac supply into dc supply Hence an electrical generator with a commutator fixed on the shaft is known as a DC Generator
Get PriceThe DC generator construction is shown in the following diagram and its parts are shown Parts of DC Generator Armature core consists of armature winding which rests on the slots of the core It consists of slots which are teeth type such that the armature winding can be inserted into the slots easily
Get PriceConstruction of DC GENERATOR An electrical generator is a device that converts mechanical energy to electrical energy generally using electromagnetic induction The source of mechanical energy may be a reciprocating or turbine steam engine water falling through a turbine or waterwheel an internal combustion engine a wind turbine a hand
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Get PriceConstruction of DC machines Stator frame or Yoke Field Poles Commutator Brushes Armature core Armature Winding Stator frame The stator frame is made up of cast steel The laminations of the cast steel are not required as there is no eddy current loss in the stator The field poles are mechanically connected to the stator frame using rivets
Get PriceThese basic constructional details are also valid for the construction of a DC motor Hence let s call this point as construction of a DC machine instead of just construction of a DC generator The above figure shows constructional details of a simple 4 pole DC machine A DC machine consists of two basic parts; stator and rotor
Get PriceThere are main two type of pole construction 1 Soiled pole core and laminated pole shoe The pole is made up of cast steel or cast iron and laminated pole shoe made up of silicon steel or dynamo steel The pole shoe fastened with pole core by long screw 2 Pole core and pole show are made up of laminations of silicon steel or dynamo steel
Get PriceConstruction of dc machines Feb 26 2024 • 46 likes • 40 877 views Download Now Download to read offline Education Rohini Haridas Follow Assistant Professor Electrical Engineering at K K Wagh institute of Engineering Education & Research Nashik at K K Wagh institute of Engineering Education & Research Nashik Advertisement Recommended
Get PriceConstruction of a Commutator A commutator is built with a set of contact bars and is set into the revolving shaft of a DC machine allied to the armature winding The commutator reverses the current flow within a winding when the shaft turns Once the shaft completes a half turn the windings are connected so that current supplies through it in
Get PriceIt is made up of cast steel for large dc motors And of cast iron for small dc motors The yoke is used in DC machines because A It provides mechanical support to poles B Acts as a protective cover against mechanical damage C And provides a passage for the magnetic flux produced by the poles of the machine
Get PriceA 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 voltage using a commutator mounted on the shaft of the generator The armature winding of DC Generator is placed on the rotor whereas the field winding is placed on the stator
Get PriceAnswer The DC machine can be classified into two types namely DC motors as well as DC genrator Most of the DC machines are equivalent to AC machines because they include AC currents as well as AC voltages in them The output of the DC machine is DC output because they convert AC voltage to DC vo
Get PriceView CONSTRUCTION OF DC MACHINE PART 1 pdf from ELECTRICAL 100 at Machakos University Construction of DC Machine Both the DC machines i e DC generator and DC motor have the same construction
Get PriceDC Generator construction The construction of a DC generator is similar to a DC motor So a DC generator can work as a DC motor and vice versa It is the rotating part of the DC machine and consists of grooves or slots over the entire periphery These slots carry the current carrying armature conductors The armature core is made up of
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Get PriceConstruction of a DC machine Note A DC generator can be used as a DC motor without any constructional changes and vice versa is also possible Thus a DC generator or a DC motor can be broadly
Get PriceFigure 1 DC Motor Both induced emfs and mechanical force are developed in a machine whether it is a generator or motor As such as dc generator and motor have identical construction In this topic dc machine used as generators although much of what is said concerning generators is equally applicable to motors are dealt with
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Get PriceThe field is the stationary part of a DC motor A field is usually constructed out of magnetic poles In the example above of the copper coil spinning on its own axis between two magnets the two magnets produce a magnetic field in which a conductor the armature must move to produce an electric charge
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