MCQOPTIONS
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MCQOPTIONS
This section includes 24 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. |
Which is one of the most efficient types of timber roof trusses? |
| A. | Raised Heel Roof Truss |
| B. | Quadrangular Roof Trusses |
| C. | Parallel Chord Roof Truss |
| D. | Scissor Roof Truss |
| Answer» B. Quadrangular Roof Trusses | |
| 2. |
Figure below is a section of a roof, identify the type _________ |
| A. | Salt Box roof |
| B. | Hammerbeam roof |
| C. | Mansard Roof |
| D. | Pyramid roof |
| Answer» C. Mansard Roof | |
| 3. |
The structure shown below as a whole represents _____________ |
| A. | Queen post truss |
| B. | King post truss |
| C. | Scissor Roof Truss |
| D. | Trapezoidal truss |
| Answer» B. King post truss | |
| 4. |
Figure shown below represents __________ |
| A. | fan truss |
| B. | scissor truss |
| C. | triangular truss |
| D. | inclined truss |
| Answer» C. triangular truss | |
| 5. |
In timber roof figure shown below, the part represented by number 2 denotes ____________ |
| A. | queen posts |
| B. | collar beam |
| C. | tie-beam |
| D. | straining beam |
| Answer» C. tie-beam | |
| 6. |
In timber roof figure shown below, the part represented by number 1 denotes _________ |
| A. | collar beam |
| B. | principal rafters |
| C. | queen posts |
| D. | qrch braces |
| Answer» C. queen posts | |
| 7. |
In timber roof figure shown below, the part represented by number 3 denotes __________ |
| A. | collar beam |
| B. | arch braces |
| C. | rafter |
| D. | queen posts |
| Answer» C. rafter | |
| 8. |
In which of the following truss members the stress depends upon whether the load is moving on top chord or bottom chord? |
| A. | Top chord and bottom chord |
| B. | Verticals |
| C. | Diagonals |
| D. | Verticals and diagonals |
| Answer» D. Verticals and diagonals | |
| 9. |
If the wind pressure at a location is 1000 N/m2, wind directionality factor 0.9 area average factor 0.8, combination factor 1, the design wind pressure is |
| A. | 270 N/m2 |
| B. | 720 N/m2 |
| C. | 360 N/m2 |
| D. | 410 N/m2 |
| Answer» C. 360 N/m2 | |
| 10. |
Double-pitched roof trusses of span 20 m and rise 2.5 m are placed at 8 m spacing. The maximum live load reaction at the supports is nearly |
| A. | 36 kN |
| B. | 40 kN |
| C. | 46 kN |
| D. | 60 kN |
| Answer» E. | |
| 11. |
In a steel roof truss, if angle iron purlin is used, its depth should not be less than |
| A. | 1/60 × span of purlin |
| B. | 1/45 × span of purlin |
| C. | 1/60 × spacing of purlin |
| D. | 1/45 × spacing of purlin |
| Answer» C. 1/60 × spacing of purlin | |
| 12. |
A pitched roof was covered with CGI sheet having a width of 0.8 m. If the total length on which the sheet is to be fixed is 7.2 m, how many sheets will it take? |
| A. | 10 |
| B. | 12 |
| C. | 11 |
| D. | 9 |
| Answer» D. 9 | |
| 13. |
How does an increase in the pitch of the roof affects the amount of load that can be placed on it? |
| A. | It increases |
| B. | It decreases |
| C. | Remains constant |
| D. | Depends upon case |
| Answer» C. Remains constant | |
| 14. |
In the equation Vz = Vb k1 k2 k3 k4 which is used for calculating the design wind speed Vz at any height z, which factor(s) is/are denoted by k1: |
| A. | Topography factor |
| B. | Terrain, height and structure size factor |
| C. | Probability factor |
| D. | Stability factor |
| Answer» D. Stability factor | |
| 15. |
Distance between purlins on sloping roof depends on |
| A. | slope of truss |
| B. | type of truss |
| C. | type of roof coverings |
| D. | spacing of trusses |
| Answer» D. spacing of trusses | |
| 16. |
Consider the following statements:Secondary stresses are induced in a roof truss due to1. Purlins placed at intermediate points on panel lengths.2. Rigidity of joints.3. Eccentricity of the bolt line relative to the centroid of the member.Which of the above statements are correct? |
| A. | 1 and 2 only |
| B. | 1 and 3 only |
| C. | 2 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 17. |
In a collar beam roof |
| A. | there is no horizontal tie beam |
| B. | there is a horizontal tie at the feet of rafters only |
| C. | there is a horizontal tie at almost the middle of rafters only |
| D. | there are two horizontal ties, one at the feet and other at the middle of the rafters |
| Answer» D. there are two horizontal ties, one at the feet and other at the middle of the rafters | |
| 18. |
In a roof truss over an industrial building, purlins are provided to carry dead loads, live loads and wind loads. As per IS 800, the support conditions assumed for these would be |
| A. | Continuous |
| B. | Fixed |
| C. | Cantilever |
| D. | Simply supported |
| E. | Propped cantilever |
| Answer» B. Fixed | |
| 19. |
If the cost of purlins/unit area is p and the cost of roof covering/unit area is r, then cost of trusses/unit area for an economical spacing of the roof trusses will be |
| A. | p + r |
| B. | 2p + r |
| C. | p + 2r |
| D. | 2p + 2r |
| Answer» C. p + 2r | |
| 20. |
In a truss girder of a bridge, a diagonal consists of mild steel flat 400 ISF (t = 8 mm) and carries a pull of 800 kN. If the gross diameter of the rivets is 26 mm, then the number of rivets required in the splice is ______. |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» E. | |
| 21. |
________ is housed in the splayed shoulders of king post truss. |
| A. | king post and tie beam |
| B. | heel strap and a tie beam |
| C. | Principal rafters and their heads |
| D. | Principal rafters and tie beam |
| Answer» D. Principal rafters and tie beam | |
| 22. |
The part represented by number 2 denotes ____________ |
| A. | queen posts |
| B. | collar beam |
| C. | tie-beam |
| D. | straining beam |
| Answer» C. tie-beam | |
| 23. |
The part represented by number 1 denotes _________ |
| A. | collar beam |
| B. | principal rafters |
| C. | queen posts |
| D. | qrch braces |
| Answer» C. queen posts | |
| 24. |
The part represented by number 3 denotes __________ |
| A. | collar beam |
| B. | arch braces |
| C. | rafter |
| D. | queen posts |
| Answer» C. rafter | |