MCQOPTIONS
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MCQOPTIONS
| 1. |
Two steel rails each of 12 m length are laid with a gap of 1.5 mm at ends at a temperature of 24°C. The thermal stress produced at a temperature of 40°C is (take E = 2 × 105 N/mm2, coefficient of thermal expansion = 12 × 10-6 /°C) |
| A. | 10.5 N/mm2 |
| B. | 12.5 N/mm2 |
| C. | 13.4 N/mm2 |
| D. | 15.5 N/mm2 |
| Answer» D. 15.5 N/mm2 | |