A dc series generator is supplying a current of 5 A to a certain load. The terminal voltage is 500 V. The armature and the series field resistances are 0.5 ohm and 0.7 ohm, respectively. Determine the efficiency of the generator if the constant losses amount to 250 W.
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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