Which of the following causes acoustic emission in machineries? Options: A . &nbspFriction B . &nbspVibration C . &nbspTurbulance D . &nbspAll of the mentioned

Which of the following causes acoustic emission in machineries?

Question

Which of the following causes acoustic emission in machineries?

Options:

A . Friction

B . Vibration

C . Turbulance

D . All of the mentioned

Answer: Option D
Answer: (d).All of the mentioned

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