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| Q. |
Which of the following machine is used for rolling tests? |
| A. | parkson gear tester |
| B. | tooth caliper |
| C. | base pitch measuring instrument |
| D. | involute profile testing machine |
| Answer» A. parkson gear tester | |
| Explanation: rolling test is generally performed on parkson gear tester. this test reveals any errors in pitch, tooth form and concentricity of pitch line. any of the above errors will cause the variation of centre distance, when two gears are in mesh with each other. | |
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