An alternator requires an alternating current of 2.1A to produce on short circuit its full-load current of 50A. The same excitation produces on open-circuit an emf of 320V. The armature resistance is 1Ω. Find the full-load percentage regulation with a lagging pf of 0.6 when terminal pd on load is 2000V. a. 7.2%b. 28.8%c. 3.6%d. 14.4%
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.
An alternator requires an alternating current of 2.1A to produce on short circuit its full-load current of 50A. The same excitation produces on open-circuit an emf of 320V. The armature resistance is 1Ω. Find the full-load percentage regulation with a lagging pf of 0.6 when terminal pd on load is 2000V. a. 7.2%b. 28.8%c. 3.6%d. 14.4%
Step by step
Solved in 2 steps with 2 images
