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D.c machines pdf
2. Electromechanical Energy Conversion. 3. DC Machines Theory of Operation. 4 . Construction. 5. Classification of DC Machines. 6. Armature Voltage and. Electrical Machines I. Prof. Krishna Vasudevan, Prof. G. Sridhara Rao, Prof. P. Sasidhara Rao. Indian Institute of Technology Madras. D.C Machines. DC Machines• Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field.
20 Apr DC machines. Armature or rotor: • stack of thin magnetic sheets (some tenth of a mm). (perpendicular to the machine axis to reduce eddy. are called field windings. ❑ The rotor contains the commutator and the conductors across which emf is induced. This part is called armature. DC Machines. Principle of DC machines. A DC motor is a device for converting DC electrical energy into rotary (or linear) mechanical energy. This process can be reversed.
family of electric rotating machines. Other members of the family are the direct- current (dc) motor or generator, the induction motor or generator, and a number. State the purpose of a dc generator that has been modified to function as an . The commutator in a dc generator replaces the slip rings of the ac generator. For normal applications. (e.g., transformers, rotors and stators of motors), the ferromagnetic material should have a small residual flux density and coercive. Basic principles of DC machines – direct current shunt motor. • You become familiar .. The workbook is included on the accompanying CD-ROM as a PDF file. University of Babylon. Electrical machines mechanical department. U Construction of DC Generators. The parts of a simple DC generator are shown in fig.
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