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SHORT CIRCUIT CHARACTERISTICS
Short-circuits can be defined according to three main characteristics: – Their origin: They may be mechanical: breakdown of conductors or…
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MOTORING OPERATION OF A DC MACHINE
In the motoring operation the d.c. machine is made to work from a d.c. source and absorb electrical power. This…
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HETEROPOLAR DC GENERATORS
In the case of a hetero-polar generator the induced emf in a conductor goes through a cyclic change in voltage…
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HOMOPOLAR MACHINES
Homopolar generators Even though the magnetic poles occur in pairs, in a homopolar generator the conductors are arranged in such…
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PRINCIPLES OF DC MACHINES
D.C. machines are the electro mechanical energy converters which work from a d.c. Source and generate mechanical power or convert…
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POWER LOSS IN SERVICE MAINS
Service main is the path between the utility company and consumer. Service mains used are the cables, almost PVC cables…
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POWER QUALITY ISSUES WITH RENEWABLE ENERGY
In renewable energy sources Power quality of distribution system can also be affected by non-linear loads.Non-linear loads are a source…
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HYBRID SYSTEM AND ITS MERITS
Solar photovoltaic (PV) cells and wind mill dependent on climatic change to work and generate electrical energy. Therefore, when these…
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HARMONICS AND ITS CAUSES
Equipments are designed for operation at a fixed frequency called fundamental frequency.Harmonics are waveforms of the frequencies which are integral…