Which of the following properties a damping oil must possess ?
Correct answer: E. All of the above
- A. Must be a good insulator
- B. Should be non-evaporating
- C. Should not have corrosive action upon the metal of the vane
- D. The viscosity of the oil should not change with the temperature
- E. All of the above
Explanation
Good damping oil should insulate electrically, resist evaporation and corrosion, and retain nearly constant viscosity over temperature changes. These properties make damping stable and reliable.
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