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| Q. |
What is mean clearance? |
| A. | maximum size of hole minus maximum size of shaft |
| B. | minimum size of hole minus minimum size of shaft |
| C. | mean size of hole minus mean size of shaft |
| D. | average of both size of shaft and hole |
| Answer» C. mean size of hole minus mean size of shaft | |
| Explanation: statistical approach allows wider tolerances compared to complete interchangeability approach. methods used by statistical approach are usually permits cheaper production. mean clearance is equal to (mean size of hole – mean size of shaft). | |
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