Ward-Leonard controlled D.C. drives are generally used for _____________________ excavators?
Correct answer: C. Heavy duty
- A. Light duty
- B. Medium duty
- C. Heavy duty
- D. All of the above
Explanation
Ward-Leonard DC drives provide high starting torque, smooth speed control and easy reversal, making them suitable for heavy-duty excavators. Light-duty excavators generally do not justify this comparatively elaborate drive system.
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