Question 1

A technical definition for a balanced rotor is:

• Where the center of mass is close to the same as the axis of rotation
• When the nickel will stand on end when placed on the bearing housing of the running rotor
• When a rotor’s geometric rotational centerline and mass centerline coincide
• When I can no longer feel vibration
• None of the above

Part 1

Part 2

Part 3

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