What statement is true concerning speed control of a shunt wound DC motor? |
A) For armature rheostat control, the greater the resistance the lower the motor speed. For field rheostat control, the greater the resistance the lower the motor speed. |
B) For armature rheostat control, the greater the resistance the higher the motor speed. For field rheostat control, the greater the resistance the higher the motor speed. |
C) For armature rheostat control, the greater the resistance the lower the motor speed. For field rheostat control, the greater the resistance the higher the motor speed. |
D) For armature rheostat control, the greater the resistance the higher the motor speed. For field rheostat control, the greater the resistance the lower the motor speed. |