MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
As per Indian Railway Board, the impact factor i (also known as coefficient of dynamic augment, CDA) in steel girders for single track span is |
| A. | \(\left[ {0.15 + \frac{8}{{6 + L}}} \right] \not > 1.0\) |
| B. | \(\left[ {0.75 + \frac{6}{{\left( {8 + L} \right)}}} \right] \not > 1.0\) |
| C. | \(\left[ {0.15 + \frac{6}{{8 + L}}} \right] \not > 1.0\) |
| D. | \(\left[ {0.75 + \frac{8}{{6 + L}}} \right] \not > 1.0\) |
| Answer» B. \(\left[ {0.75 + \frac{6}{{\left( {8 + L} \right)}}} \right] \not > 1.0\) | |
| 2. |
As per the Indian Standard (IS) 800 : 2007, with respect to serviceability and when transverse stiffeners are not provided, the d/tw ratio of the web should be less than or equal to (depth of web = d; thickness of web = tw ; and yield stress ratio of web = εw ) |
| A. | 400 εw |
| B. | 250 εw |
| C. | 200 εw |
| D. | 150 εw |
| Answer» D. 150 εw | |
| 3. |
Consider the following statements:In a plate girder1. Bearing stiffeners are designed for bearing forces and they must also be checked for safety against compressive forces.2. The length of any staggered intermittent fillet weld should not be less than 10 times the thickness of the stiffener.3. Bearing stiffeners must be provided at the point of maximum bending moment.Which of the above statements are correct? |
| A. | 1 and 3 only |
| B. | 2 and 3 only |
| C. | 1 and 2 only |
| D. | 1, 2 and 3 |
| Answer» D. 1, 2 and 3 | |
| 4. |
In a cantilever plate girder to prevent web buckling, horizontal stiffeners are provided running along the span. They are provided |
| A. | below the neutral axis |
| B. | over the entire cross-section (above as well as below neutral axis) |
| C. | above the neutral axis |
| D. | None of the above |
| Answer» B. over the entire cross-section (above as well as below neutral axis) | |
| 5. |
A welded plate girder has: b/tf = 6.7 and d/tw = 9.1. The section of plate girder will be classified as: (take fy = 250 Mpa) |
| A. | Slender |
| B. | Semi-compact |
| C. | Compact |
| D. | Plastic |
| Answer» E. | |
| 6. |
A welded plate girder of span 25 m is laterally restrained throughout its length. It has to carry- a load of 80 kN/m over the whole span besides its weight. If K = 200 and fy = 250 MPa, the thickness of web will be nearly |
| A. | 10 mm |
| B. | 14 mm |
| C. | 16 mm |
| D. | 20 mm |
| Answer» B. 14 mm | |
| 7. |
In a plate girder, the web plate is connected to the flange plates by fillet welding. The size of the fillet welds is designed to safely resist |
| A. | The bending stresses in the flange |
| B. | The vertical shear force at the section |
| C. | The horizontal shear force between the flange and the web plate |
| D. | The forces causing buckling in the web |
| Answer» D. The forces causing buckling in the web | |
| 8. |
Bearing stiffner in a plate girder is used to - |
| A. | decrease the effective depth of web |
| B. | prevent bulking of web |
| C. | prevent excessive deflection |
| D. | transfer the load from the top flange to the bottom one |
| Answer» C. prevent excessive deflection | |
| 9. |
A welded steel plate girder consisting of two flange plates of 350 mm × 16 mm and a web plate of 1000 mm × 6 mm, requires |
| A. | No stiffeners |
| B. | Horizontal stiffeners |
| C. | Intermediate vertical stiffeners |
| D. | Vertical and horizontal stiffeners |
| Answer» D. Vertical and horizontal stiffeners | |
| 10. |
Horizontal stiffener in a plate girder is provided to safeguard against web buckling due to |
| A. | shear |
| B. | compressive force in bending |
| C. | tensile force in bending |
| D. | heavy concentrated load |
| Answer» C. tensile force in bending | |
| 11. |
If 't' is the thickness of web of plate girder which is stiffened vertical then, the smallest clear dimension of a panel should not exceed:- |
| A. | 85 t |
| B. | 180 t |
| C. | 250 t |
| D. | 200 t |
| Answer» C. 250 t | |
| 12. |
Intermediate vertical stiffeners are provided in plate girders to |
| A. | eliminate the web buckling |
| B. | eliminate the local buckling |
| C. | transfer the vertical loads |
| D. | prevent the excessive deflection |
| Answer» B. eliminate the local buckling | |
| 13. |
In which one of the following industrial roofing contexts, is the loading carried by the combination of pure flexure and flexure due to shear induced by the relative deformation between the ends of the top and bottom chord members? |
| A. | Vierendeel girders |
| B. | Scissors girders |
| C. | Lenticular girders |
| D. | Mansard girders |
| Answer» B. Scissors girders | |
| 14. |
In a plate girder bridge, the thickness of web is less than d/200 where d is the unsupported depth of web. The web plate should be provided with |
| A. | Vertical stiffeners |
| B. | Horizontal stiffeners |
| C. | End stiffeners |
| D. | Both vertical and horizontal stiffeners |
| Answer» E. | |
| 15. |
If 'd' is depth of web and 'tw' is thickness of web of a plate girder such that \(\dfrac{d}{t_w}\le 400 \ \varepsilon_w\), where \(\varepsilon_w=\sqrt{\dfrac{250}{f_y}}\), then: |
| A. | end bearing stiffeners, intermediate transverse stiffeners and longitudinal stiffeners at 0.2d from compression face are needed |
| B. | intermediate transverse stiffeners are needed in addition to end bearing stiffeners |
| C. | end bearing stiffeners, intermediate transverse stiffeners, longitudinal stiffeners at 0.2d from compression face and at neutral axis are needed |
| D. | only end bearing stiffeners are needed |
| Answer» D. only end bearing stiffeners are needed | |
| 16. |
In a plate girder, the web is primarily designed to resist |
| A. | torsional moment |
| B. | shear force |
| C. | bending moment |
| D. | diagonal buckling |
| Answer» C. bending moment | |
| 17. |
Bearing stiffeners are provided |
| A. | At the ends of plate girders |
| B. | At the ends of plate girder and on both faces of the web |
| C. | At the ends of plate girder and only on one face of the web |
| D. | At the points of concentrated loads, to protect the web from the direct compressive loads |
| Answer» E. | |
| 18. |
In case of bolted plate girder, the angle section that is used should be: |
| A. | Unequal with long leg connected |
| B. | Unequal with short leg connected |
| C. | Equal angle |
| D. | Equal angle connected back to back |
| Answer» C. Equal angle | |
| 19. |
As per IS 800:2007, the resistance to shear buckling shall be verified when _____for a unstiffened web. |
| A. | \(\dfrac{d}{t_w}> 67 \varepsilon\) |
| B. | \(\dfrac{d}{t_w}> 80 \varepsilon\) |
| C. | \(\dfrac{d}{t_w}> 75 \varepsilon\) |
| D. | \(\dfrac{d}{t_w}> 90 \varepsilon\) |
| E. | \(\dfrac{d}{t_w}> 100 \varepsilon\) |
| Answer» B. \(\dfrac{d}{t_w}> 80 \varepsilon\) | |
| 20. |
A welded plate girder, consisting of two flange plates of 350 mm × 10 mm each and a web plate of 1000 mm × 6 mm, requires |
| A. | no stiffeners |
| B. | horizontal stiffeners |
| C. | intermediate vertical stiffeners |
| D. | vertical and horizontal stiffeners |
| Answer» D. vertical and horizontal stiffeners | |