MCQOPTIONS
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| 1. |
If an article develops insufficient hardening after quenching it could be due to any of the following EXCEPT |
| A. | Internal stresses in the article before heating |
| B. | Low specific heat of quenching oil |
| C. | Cooling rate too slow |
| D. | Holding insufficient at the hardening temperature |
| E. | Hardening temperature too low |
| Answer» B. Low specific heat of quenching oil | |