MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Strength of Materials Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A bar shown in the diagram below is subjected to load 160kN. If the stress in the middle portion Is limited to 150N/mm2, what will be the length of the middle portion, if the total elongation of the bar is to be 0.2mm? Take E = 2.1 x 105 N/mm2. |
| A. | 18.45cm |
| B. | 17.24cm |
| C. | 16.45cm |
| D. | 20.71cm |
| Answer» E. | |
| 2. |
A round bar made of same material consists of 4 parts each of 100mm length having diameters of 40mm, 50mm, 60mm and 70mm, respectively. If the bar is subjected to an axial load of 10kN, what will be the total elongation of the bar in mm? |
| A. | 0.4/πE ( 1/16 + 1/25 + 1/36 + 1/49) |
| B. | 4/πE ( 1/16 + 1/25 + 1/36 + 1/49) |
| C. | 2/πE ( 1/16 + 1/25 + 1/36 + 1/49) |
| D. | 40/πE ( 1/16 + 1/25 + 1/36 + 1/49) |
| Answer» E. | |
| 3. |
A bar is in two sections having equal lengths. The area of cross section of 1st is double that of 2nd. if the bar carries an axial load of P, then what will be the ratio of elongation in section 2nd to section 1st ? |
| A. | 1/2 |
| B. | 2 |
| C. | 4 |
| D. | 1/4 |
| Answer» C. 4 | |
| 4. |
A rod, which tapers uniformly from 5cm diameter to 3cm diameter in a length of 50cm, is subjected to an axial load of 6000N. if E = 2,00,000 N/mm2, what will be the extension of the rod? |
| A. | 0.00114cm |
| B. | 0.00124cm |
| C. | 0.00127cm |
| D. | 0.00154cm |
| Answer» D. 0.00154cm | |
| 5. |
A bar is subjected to a tensile load of 150kN. If the stress in the middle portion is limited to 160 N/mm2, what will be the diameter of the middle portion of the total elongation of the bar is 0.25cm (E= 2 x 105)? |
| A. | 3cm |
| B. | 3.45cm |
| C. | 3.85cm |
| D. | 4cm |
| Answer» C. 3.85cm | |
| 6. |
A tensile rod of 40kN is acting on a rod of diameter 40mm and of length 4m. a bore of diameter 20mm is made centrally on the rod. To what length the rod should be bored so that the total extension will increase 30% under the same tensile load if E = 2×105 N/mm2? |
| A. | 2m |
| B. | 2.7m |
| C. | 3.2m |
| D. | 3.6m |
| Answer» E. | |
| 7. |
A member ABCD is subjected to points load P1=45kN, P2, P3=450kN and P4=130kN. What will be the total elongation of the member, assuming the modulus of elasticity to be 2.1x105N/mm2. The cross sectional area is 625mm, 2500mm, 1250mm respectively. |
| A. | 0.4914mm |
| B. | 0.4235mm |
| C. | 0.4621mm |
| D. | 0.4354mm |
| Answer» B. 0.4235mm | |
| 8. |
A member ABCD is subjected to points load P1=45kN, P2, P3=450kN and P4=130kN. what will be the value of P necessary for equilibrium? |
| A. | 350kN |
| B. | 365kN |
| C. | 375kN |
| D. | 400kN |
| Answer» C. 375kN | |