Two identical three – phase Y – connected alternator A and B share equally a load of 10MW at 33kV and 80% lagging pf. The synchronous reactance of each machine is 4 ohms per phase and thew armature resistance is negligible. Alternator A has its filed excitation adjusted to carry 125 A lagging current, what is the current supplied by alternator B? a. 96 A b. 97 A b. 98 A d. 95 A
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.
Two identical three – phase Y – connected alternator A and B share equally a load of 10MW at 33kV and 80% lagging pf. The synchronous reactance of each machine is 4 ohms per phase and thew armature resistance is negligible. Alternator A has its filed excitation adjusted to carry 125 A lagging current, what is the current supplied by alternator B?
a. 96 A b. 97 A
b. 98 A d. 95 A
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