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| Q. |
A pattern carries which allowance for internal and external surfaces? |
| A. | shrinkage allowance |
| B. | machining allowance |
| C. | distortion allowance |
| D. | draft allowance |
| Answer» D. draft allowance | |
| Explanation: draft allowance is also known by the name of tapering allowance, as the diameter of the cast goes on increasing in a trapezoidal shape from the bottom. a pattern has a draft allowance of an order of 1 and 3 degrees for external and internal surfaces respectively. | |
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