MCQOPTIONS
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MCQOPTIONS
| 1. |
Which formula CORRECTLY depicts the elongation in a composite body? |
| A. | \(\delta = \frac{P}{E}\left[ {\frac{{{l_1}}}{{{A_1}}} + \frac{{{l_2}}}{{{A_2}}} + \frac{{{l_3}}}{{{A_3}}} + \frac{{{l_4}}}{{{A_4}}} + \ldots } \right]\) |
| B. | \(\delta = \frac{P}{E}\left[ {{l_1} + {l_2} + {l_3} + {l_4} + \ldots } \right]\) |
| C. | \(\delta = \frac{P}{E}\left[ {{l_1} - {l_2} + {l_3} - {l_4} + \ldots } \right]\) |
| D. | \(\delta = \frac{{Pl}}{E}\left[ {\frac{1}{{{A_1}}} + \frac{1}{{{A_1}}} + \frac{1}{{{A_1}}} + \frac{1}{{{A_1}}} + \ldots } \right]\) |
| Answer» B. \(\delta = \frac{P}{E}\left[ {{l_1} + {l_2} + {l_3} + {l_4} + \ldots } \right]\) | |