MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Strength Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the instantaneous stress produced in a bar 10cm2 in area ans 4m long by the sudden application of tensile load of unknown magnitude, if the extension of the bar due to suddenly applied load is 1.35mm if E = 2×105 N/mm2? |
| A. | 67.5 N/mm2 |
| B. | 47 N/mm2 |
| C. | 55.4 N/mm2 |
| D. | 78.5 N/mm2 |
| Answer» B. 47 N/mm2 | |
| 2. |
What will be the amount of axial pull be applied on a a 4cm diameter bar to get an instantaneous stress value of 143 N/mm2? |
| A. | 50kN |
| B. | 60kN |
| C. | 70kN |
| D. | 80kN |
| Answer» C. 70kN | |
| 3. |
A steel rod is 2m long and 50mm in diameter. An axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous elongation produced in the rod if E=22GN/m2? |
| A. | 0.0097 mm |
| B. | 1.0754 mm |
| C. | 1.6354 mm |
| D. | 1.0186 mm |
| Answer» E. | |
| 4. |
A steel rod is 2m long and 50mm in diameter. A axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous stress induced in the rod? |
| A. | 101.89 N/mm2 |
| B. | 94.25 N/mm2 |
| C. | 130.45 N/mm2 |
| D. | 178.63 N/mm2 |
| Answer» B. 94.25 N/mm2 | |
| 5. |
2 tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy absorbed in the bar if E=1×105 N/mm2? |
| A. | 312.5 N-m |
| B. | 314500 N-mm |
| C. | 1250 N-m |
| D. | 634 N-m |
| Answer» D. 634 N-m | |
| 6. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm and 5m length. What will be the strain energy absorbed by the rod if E=2×105 N/mm2? |
| A. | 140.5 N-m |
| B. | 100 N-m |
| C. | 197.45 N-m |
| D. | 143.2 N-m |
| Answer» E. | |
| 7. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm diameter. What will be the maximum instantaneous stress induced? |
| A. | 95.493 N/mm2 |
| B. | 45.25 N/mm2 |
| C. | 85.64 N/mm2 |
| D. | 102.45 N/mm2 |
| Answer» B. 45.25 N/mm2 | |
| 8. |
WHAT_WILL_BE_THE_AMOUNT_OF_AXIAL_PULL_BE_APPLIED_ON_A_A_4CM_DIAMETER_BAR_TO_GET_AN_INSTANTANEOUS_STRESS_VALUE_OF_143_N/MM2_??$ |
| A. | 50kN |
| B. | 60kN |
| C. | 70kN |
| D. | 80kN |
| Answer» C. 70kN | |
| 9. |
What_will_be_the_instantaneous_stress_produced_in_a_bar_10cm2_in_area_ans_4m_long_by_the_sudden_application_of_tensile_load_of_unknown_magnitude,_if_the_extension_of_the_bar_due_to_suddenly_applied_load_is_1.35mm_if_E_=_2√ó105_N/mm2_?$# |
| A. | 67.5 N/mm<sup>2</sup> |
| B. | 47 N/mm<sup>2</sup> |
| C. | 55.4 N/mm<sup>2</sup> |
| D. | 78.5 N/mm<sup>2</sup> |
| Answer» B. 47 N/mm<sup>2</sup> | |
| 10. |
A steel rod is 2m long and 50mm in diameter. A axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous elongation produced in the rod if E=22GN/m2? |
| A. | 0.0097 mm |
| B. | 1.0754 mm |
| C. | 1.6354 mm |
| D. | 1.0186 mm |
| Answer» E. | |
| 11. |
A steel rod is 2m long and 50mm in diameter. A axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous stress induced in the rod ? |
| A. | 101.89 N/mm<sup>2</sup> |
| B. | 94.25 N/mm<sup>2</sup> |
| C. | 130.45 N/mm<sup>2</sup> |
| D. | 178.63 N/mm<sup>2</sup> |
| Answer» B. 94.25 N/mm<sup>2</sup> | |
| 12. |
2 tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy absorbed in the bar if E=1√ó105 N/mm2 ?$ |
| A. | 312.5 N-m |
| B. | 314500 N-mm |
| C. | 1250 N-m |
| D. | 634 N-m |
| Answer» D. 634 N-m | |
| 13. |
A tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm. What will be the instantaneous stress in bar? |
| A. | 100 N/mm<sup>2</sup> |
| B. | 120 N/mm<sup>2</sup> |
| C. | 150 N/mm<sup>2</sup> |
| D. | 250 N/mm<sup>2</sup> |
| Answer» E. | |
| 14. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm and 5m length. What will be the strain energy absorbed by the rod if E=2√ó105 N/mm2 ?$ |
| A. | 140.5 N-m |
| B. | 100 N-m |
| C. | 197.45 N-m |
| D. | 143.2 N-m |
| Answer» E. | |
| 15. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm diameter. What will be the maximum instantaneous stress induced ? |
| A. | 95.493 N/mm<sup>2</sup> |
| B. | 45.25 N/mm<sup>2</sup> |
| C. | 85.64 N/mm<sup>2</sup> |
| D. | 102.45 N/mm<sup>2</sup> |
| Answer» B. 45.25 N/mm<sup>2</sup> | |
| 16. |
What is the strain energy stored in a body when the load is applied suddenly? |
| A. | σE/V |
| B. | σE<sup>2</sup>/V |
| C. | σV<sup>2</sup>/E |
| D. | σV<sup>2</sup>/2E |
| Answer» E. | |
| 17. |
What is the relation between maximum stress induced due to sudden loading to maximum stress the gradual loading? |
| A. | Maximum stress in sudden load is equal to the maximum stress in gradual load |
| B. | Maximum stress in sudden load is half to the maximum stress in gradual load |
| C. | Maximum stress in sudden load is twice to the maximum stress in gradual load |
| D. | Maximum stress in sudden load is four times to the maximum stress in gradual load |
| Answer» D. Maximum stress in sudden load is four times to the maximum stress in gradual load | |