Figure 07-6

-Refer to the accompanying figure. Basic electrical theory of a DC motor-generator, variable speed control system. Briefly explain how speeds above the motor base speed (nameplate speed) and speeds below the motor base speed are obtained.

Question

Figure 07-6
 
-Refer to the accompanying figure. Basic electrical theory of a DC motor-generator, variable speed control system. Briefly explain how speeds above the motor base speed (nameplate speed) and speeds below the motor base speed are obtained.

Quizplus · Accepted Answer

The Answer is Speeds above the motor base speed (nameplate speed) are obtained by weakening the motor shunt field. Speeds below the motor base speed are obtained by weakening the generator field.

Figure 07-6 -Refer to the Accompanying Figure. Basic Electrical Theory of a Electrical