Why are the D.C. motors preferred for traction applications?
AThe speed is inversely proportional to the torque and the torque is proportional to square of armature current
BTorque is proportional to armature current
CTorque and speed are inversely proportional to armature current
DTorque is proportional to square root of armature current
Correct answer
A. The speed is inversely proportional to the torque and the torque is proportional to square of armature current
Explanation
The correct answer is The speed is inversely proportional to the torque and the torque is proportional to square of armature current.