The current drawn by the armature of D.C. motor is directly proportional to__________?
Correct answer: A. the torque required
- A. the torque required
- B. the speed of the motor
- C. the voltage across the terminals
- D. none of the above
Explanation
For a motor with constant field flux, electromagnetic torque is proportional to armature current, as given by T = kφIa. Therefore, a higher required torque requires a proportionally higher armature current.
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