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Strength of Materials - Section 4 Multiple Questions and Answers.
| 21. | Modulus of elasticity (E) is defined in terms of bulk modulus (K) and Poisson’s ratio (1/m) as | ||
| A. | 3K [1-(m/2)] | ||
| B. | 3K [1-(2/m)] | ||
| C. | 3K [1-(1/m)] | ||
| D. | 3K [1+(2/m)] | ||
| 22. | Ratio of maximum shear stress to average shear stress is 4/3 in a ___ section. | ||
| A. | hexagonal | ||
| B. | circular | ||
| C. | triangular | ||
| D. | rectangular | ||
| 25. | Normal stress on an oblique plane inclined at angle 45° to the axis of a bar of square cross-section of side S when acted upon by a tensile force P is | ||
| A. | P/4S2 | ||
| B. | P/2S2 | ||
| C. | 2P/S2 | ||
| D. | P/S2 | ||
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