3. When a 3-phase, star connected alternator is fully loaded at 0.8 p.f lagging, the terminal voltage is 440 V. On throwing of this load with speed and field excitation being maintained constant, the voltage rises to 519.6 V. Calculate its voltage regulation.
3. When a 3-phase, star connected alternator is fully loaded at 0.8 p.f lagging, the terminal voltage is 440 V. On throwing of this load with speed and field excitation being maintained constant, the voltage rises to 519.6 V. Calculate its voltage regulation.
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
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