MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Structural Analysis knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cable of insignificant weight, 18 m long, is supported at its two ends, 16 m apart, at the same level. The cable supports at its mid-reach a load of 120 N. The tension in the cable is nearly |
| A. | 136 N |
| B. | 131 N |
| C. | 126 N |
| D. | 121 N |
| Answer» C. 126 N | |
| 2. |
For a pin jointed frame at points A, B and C, the horizontal component of reaction at A is |
| A. | 11.25 kN acting towards right |
| B. | 11.25 kN acting towards left |
| C. | 15 kN acting towards right |
| D. | 15 kN acting towards left |
| E. | 7 kN acting towards left |
| Answer» C. 15 kN acting towards right | |
| 3. |
Consider the following statements:A. The intersection of the first and the last ray in the funicular diagram is on the line of action of the resultant.B. Intersection of the first and last rays in the polar diagram gives the magnitude of the resultant.Which of the above statements is/are correct?Select the code for the correct answer from the options given below: |
| A. | A only |
| B. | B only |
| C. | Both A and B |
| D. | Neither A nor B |
| Answer» B. B only | |
| 4. |
A cable is suspended between two points 75 m apart at the same level. It carries a uniformly distributed load of 12.5 kN per horizontal meter. If the maximum tension in the cable is limited to 1000 kN, the minimum central dip will be nearly |
| A. | 14 m |
| B. | 12 m |
| C. | 10 m |
| D. | 8 m |
| Answer» D. 8 m | |
| 5. |
It is generally assumed that the cable in a cable stayed bridge is |
| A. | perfectly flexible |
| B. | perfectly inflexible |
| C. | extensible |
| D. | perfectly flexible and extensible |
| Answer» B. perfectly inflexible | |
| 6. |
A cable carrying a load of 10 kN/m run of horizontal span is stretched between supports of 100 m apart. If the supports are at same level and central dip of 8 m, the ratio of greatest and least tensions in the cable will be |
| A. | 1.05 |
| B. | 1.35 |
| C. | 1.65 |
| D. | 1.95 |
| Answer» B. 1.35 | |
| 7. |
A cable is suspended from supports A and B. It is loaded at point B and C. What is the force in cable CD? |
| A. | 12 kN |
| B. | 10 kN |
| C. | 14 kN |
| D. | 20 kN |
| Answer» D. 20 kN | |
| 8. |
Neglecting axial deformations, and assuming EI to be constant throughout the frame sections the horizontal displacement at D is |
| A. | PL3/(3EI) |
| B. | 5PL3/(3EI) |
| C. | 1PL3/(3EI) |
| D. | 2PL3/(3EI) |
| E. | 7PL3/(3EI) |
| Answer» C. 1PL3/(3EI) | |
| 9. |
A cable of span 100 m and a dip of 5 m is subjected to a temperature rise of 15°C. The increase in dip (in mm) due to rise in temperature is |
| A. | 27.5 |
| B. | 57.5 |
| C. | 62.5 |
| D. | 67.5 |
| E. | 52.5 |
| Answer» E. 52.5 | |
| 10. |
A rigid weightless platform PQRS shown in the figure (not drawn to the scale) can slide freely in the vertical direction. The platform is held in position by the weightless member OJ and four weightless, frictionless rollers. Points O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure.The magnitude of horizontal component of reaction (in kN) at pin O, is f |
| A. | 90 |
| B. | 120 |
| C. | 150 |
| D. | 180 |
| Answer» C. 150 | |
| 11. |
A cable subjected to its own weight and free of any other loads will take the form of |
| A. | Parabolic curve |
| B. | Elliptic curve |
| C. | Catenary curve |
| D. | Bernoulli's Lemniscate |
| Answer» D. Bernoulli's Lemniscate | |
| 12. |
A cable of span 120 m and dip 10 m carries a load of 6 kN/m of horizontal span. The maximum tension in the cable is ______. |
| A. | 1238.42 kN |
| B. | 1138.42 kN |
| C. | 1038.42 kN |
| D. | 1338.42 kN |
| Answer» C. 1038.42 kN | |
| 13. |
Consider the following statements regarding suspension cables:1) The horizontal component of the cable tension in a suspension bridge is constant at every point along the length of the cable2) Stiffening girders in a suspension bridge carry only the live loadWhich of the above statements is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 14. |
Consider the structural system shown in the figure under the action of weight W. All the joints are hinged. The properties of the members in terms of length (L), area (A) and the modulus of elasticity (E) are also given in the figure. Let L, A and E be 1 m, 0.05 m2 and 30 × 106 N/m2, respectively, and W be 100 kN.Which one of the following sets gives the correct values of the force, stress and change in length of the horizontal member QR? |
| A. | Compressive force = 25 kN; Stress = 250 kN/m2; Shortening = 0.0118 m |
| B. | Compressive force = 14.14 kN; Stress = 141.4 kN/m2; Extension = 0.0118 m |
| C. | Compressive force = 100 kN; Stress = 1000 kN/m2; Shortening = 0.0417 m |
| D. | Compressive force = 100 kN; Stress = 1000 kN/m2; Extension = 0.0417 m |
| Answer» D. Compressive force = 100 kN; Stress = 1000 kN/m2; Extension = 0.0417 m | |
| 15. |
A portal frame may sway due to:a) Eccentric loading on the portal frames.b) Non-uniform section of the member.Select the true statement. |
| A. | Both the statement (a) and (b) are true |
| B. | Statement (a) alone is true |
| C. | Statement (b) alone is true |
| D. | Both the statement (a) and (b) is false |
| E. | Information insufficient |
| Answer» B. Statement (a) alone is true | |
| 16. |
A cable resists external loads by virtue of |
| A. | bending |
| B. | compression |
| C. | compression and bending |
| D. | torsion |
| E. | tension |
| Answer» F. | |
| 17. |
A cable of span l and central dip d is subjected to uniform load w per unit horizontal length. The horizontal component of tension in the cable is |
| A. | \(\frac{{{\rm{w}}{{\rm{l}}^2}}}{{4{\rm{d}}}}\) |
| B. | \(\frac{{{\rm{w}}{{\rm{l}}^2}}}{{8{\rm{d}}}}\) |
| C. | \(\frac{{{\rm{w}}{{\rm{l}}^2}}}{{12{\rm{d}}}}\) |
| D. | \(\frac{{{\rm{w}}{{\rm{l}}^2}}}{{16{\rm{d}}}}\) |
| Answer» C. \(\frac{{{\rm{w}}{{\rm{l}}^2}}}{{12{\rm{d}}}}\) | |