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| Q. |
Which of the following method use pendulum in measuring the surface finish? |
| A. | micro interferometer |
| B. | wallace surface dynamometer |
| C. | reflected light intensity method |
| D. | microscopic inspection |
| Answer» B. wallace surface dynamometer | |
| Explanation: wallace surface dynamo meter is like a friction meter which consists a pendulum in which the testing shoes are present which are clamped to a bearing surface and a spring pressure which is predetermined can be applied. | |
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