Which of the following essential features is possessed by an indicating instrument?
Correct answer: D. All of the above
- A. Deflecting device
- B. Controlling device
- C. Damping device
- D. All of the above
Explanation
An indicating instrument needs a deflecting system to move the pointer, a controlling system to establish the final position, and a damping system to prevent oscillations. Therefore, all three are essential.
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