Q. Ward Leonard system is used for

A
Voltage regulation of transformer
B
Speed control of DC motor
C
Excitation of alternator
D
Voltage regulation of alternator
Solution:

Ward Leonard system is used for speed control of DC motor.

It is a basic armature control method. This control system consists of DC motor-generator set and the main motor. The main motor is controlled by applying variable voltage across its armature. This variable voltage is obtained using the motor-generator. It was very widely used in the past.

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