Engine : General Subjects - 1623/1128
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| When reviewing results of vibration analysis, vibration at a bearing occurs at the same frequency as the motor rpm, with a displacement in the radial direction that is twice that of the axial direction. Which of the following could this indicate? |
| A) Loose foundation bolts. |
| B) Mechanical unbalance. |
| C) Bent motor shaft. |
| D) Rubbing. |
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