When the DC motor is running under load when the brush is in the geometric neutral line, its armature reaction is________
A. quadrature axis armature reaction
B. Direct axis magnetizing armature reaction
C. direct axis demagnetization armature reaction
D. All of the above are true
Answer:A
When the DC motor is running under load when the brush is in the geometric neutral line, its armature reaction is________
A. quadrature axis armature reaction B. Direct axis magnetizing armature reaction C. direct axis demagnetization armature reaction D. All of the above are true