MCQOPTIONS
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MCQOPTIONS
| 1. |
A mild steel bar, circular in cross-section, tapers from 40 mm diameter to 20 mm diameter over its length of 800 mm. It is subjected to an axial pull of 20 kN. E = 2 × 105 N/mm2. The increase in the length of the rod will be |
| A. | \(\frac{1}{{10\pi }}\;mm\) |
| B. | \(\frac{2}{{5\pi }}\;mm\) |
| C. | \(\frac{4}{{5\pi }}\;mm\) |
| D. | \(\frac{1}{{5\pi }}\;mm\) |
| Answer» C. \(\frac{4}{{5\pi }}\;mm\) | |