Q.Which of the following properties damping oil must possess?

  • AMust be a good insulator and non-evaporating
  • BShould not have corrosive action upon the metal of the vane
  • CThe viscosity of the oil should not change with the temperature
  • DAll of the above 
Correct Answer : (D)

All of the above 

Hints :

The properties damping oil must possess are Must be a good insulator and non-evaporating, Should not have corrosive action upon the metal of the vane and the viscosity of the oil should not change with the temperature.

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