Which of the following is an essential part of a motor meter ?
Correct answer: D. All of the above
- A. An operating torque system
- B. A braking device
- C. Revolution registering device
- D. All of the above
Explanation
A motor meter needs an operating torque to drive its mechanism, a braking device to control speed, and a revolution-registering device to record the quantity measured. Hence all three listed parts are essential.
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