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This Blog is made by a Electrical Student.
He wants to keep a Archive of Electrical Concepts and Stuffs.
So this Blog may contain contents from various other sites and blogs.
And it will be notified wherever the content is taken from other Sites(it is possible 99% times will be notified ).

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What is a Compensating Winding & Interpoles?

Where Compensating windings and Interpoles are Used? In small generators, the effects of armature reaction are reduced by actually mechanically shifting the position of the brushes. The practice of shifting the brush position for each current variation is not practiced except in small generators. In larger generators, other means are taken to eliminate armature reaction. Compensating Windings or Interpoles are used for this purpose. Compensating Windings The cross-magnetizing effect of armature reaction may cause trouble in d.c. machines subjected to large fluctuations in load. In order to neutralize the cross magnetizing effect of armature reaction, a compensating winding is used. The compensating windings consist of a series of coils embedded in slots in the pole faces. These coils are connected in series with the armature. The series-connected compensating windings produce a magnetic field, which varies directly with armature current. Because the compensating windings are
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How does the commutator convert AC to DC in a DC generator?

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The Voltage generated in the armature, placed in a rotating Magnetic Field, of a DC generator is alternating in nature. The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating  current  in the  armature winding  of a dc machine is converted into direct current after going through the commutator and the stationary brushes. Again in  DC Motor , the input DC is to be converted in alternating form in armature and that is also done through commutation. This transformation of current from the rotating armature of a DC machine to the stationary brushes needs to maintain continuously moving contact between the commutator segments and the brushes. When the armature starts to rotate, then the coils situated under one pole (let it be N pole) rotates between a positive brush and its consecutive negative brush and the current flows through this coil is in a direction inward to the commutator segments. Then the coil is short ci
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What are the Types of Power in Electrical Systems?

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Real Power Reactive Power Apparent Power (1)   Real Power: (P)   Alternative words used for Real Power (Actual Power, True Power, Watt-full Power, Useful Power, Real Power, and Active Power) In a DC Circuit, power supply to the DC load is simply the product of Voltage across the load and Current flowing through it i.e., P = V I. because in DC Circuits, there is no concept of phase angle between current and voltage. In other words, there is no  Power factor  in DC Circuits. But the situation is Sinusoidal or AC Circuits is more complex because of phase difference between Current and Voltage. Therefore average value of power (Real Power) is P = VI Cosθ is in fact supplied to the load. In AC circuits, When circuit is pure resistive, then the same formula used for power as used in DC as P = V I.  You may also read about  Power Formulas in DC, AC Single Phase and and AC Three Phase Circuits . Real Power formulas: P = V I                                        (In DC c
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