We can find the source of sever vibration level in a complex

We can find the source of sever vibration level in a complex plant, if Vibrating component has the highest noise only Integration of vibration gives maximum level of vibration tor all components. Measurement of vibration level at all moving parts s the same. The frequency of major vibration is matching with that of the rotating element.

Solution

D - The Frequency of major vibration is matching with that of the rotating element.