A motor operating on a 120 volt DC supply drivesw a direct current generator, which is delivering 1 kilowatt at 240 volts. Under these conditions the motor has 78% efficiency and the generator has 85% efficiency. Determine: a. The output of the motor in horsepower and, b. The line current drawn by the motor.
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.
A motor operating on a 120 volt DC supply drivesw a direct current generator, which is delivering 1 kilowatt at 240 volts. Under these conditions the motor has 78% efficiency and the generator has 85% efficiency. Determine: a. The output of the motor in horsepower and, b. The line current drawn by the motor.
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