Q8. Which of the following quantities should be kept constant when experimentally determining the relationship between load power and the terminal voltage of a self- excited DC shunt generator? (a) Prime mover speed (b) Load resistance (c) Field circuit resistance (d) Prime mover speed and load resistance (e) Prime mover speed and field circuit resistance

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A: It is given that: Zin=5+j4Ω at ω1=1000 radsec

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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.