Decreasing the field current
Increasing the field current
shunt motor more than its full-load speed can be obtained by A. Decreasing the field current B. Increasing the field current C. Decreasing the armature current
Increasing the armature current
Answer is Right!
Answer is Wrong!
The correct answer is A. Decreasing the field current.
A DC shunt motor is a type of DC motor that has a permanent magnet field. The speed of a DC shunt motor is proportional to the voltage applied to the armature and inversely proportional to the field current. Therefore, decreasing the field current will increase the speed of the motor.
Option B is incorrect because increasing the field current will decrease the speed of the motor.
Option C is incorrect because decreasing the armature current will decrease the torque of the motor, which will not cause the motor to speed up.
Option D is incorrect because increasing the armature current will increase the torque of the motor, which will not cause the motor to speed up.