MCQOPTIONS
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MCQOPTIONS
This section includes 272 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. |
A single angle in tension is connected by one leg only. If the areas of connecting and outstanding legs are respectively a and b, net effective area of the angle, is |
| A. | a - [b/{1 + 0.35 (b/a)}] |
| B. | a + [b/{1 + 0.35 (b/a)}] |
| C. | a - [b/{1 + 0.2 (b/a)}] |
| D. | a + [b/{1 + 0.2 (b/a)}] |
| Answer» C. a - [b/{1 + 0.2 (b/a)}] | |
| 2. |
If L is the overall length of a combined footing having A as its area, d being the distance between the centre of gravity of the base and centre of the base, the larger width b is |
| A. | (a/l) + (3ad/l²) |
| B. | (a/l) + (6ad/l²) |
| C. | (a/l) - (6ad/l²) |
| D. | (a/l) - (3ad/l²) |
| Answer» C. (a/l) - (6ad/l²) | |
| 3. |
With a percentage increase of carbon in steel, decreases its |
| A. | strength |
| B. | hardness |
| C. | brittleness |
| D. | ductility |
| Answer» E. | |
| 4. |
Tacking rivets in compression plates not exposed to the weather, have a pitch not exceeding 300 mm or |
| A. | 16 times the thickness of outside plate |
| B. | 24 times the thickness of outside plate |
| C. | 32 times the thickness of outside plate |
| D. | 36 times the thickness of outside plate |
| Answer» D. 36 times the thickness of outside plate | |
| 5. |
The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is |
| A. | 180 |
| B. | 200 |
| C. | 250 |
| D. | 350 |
| Answer» B. 200 | |
| 6. |
The allowable stress in axial tension is generally kept less if thickness of the member is more than |
| A. | 10 mm |
| B. | 12 mm |
| C. | 15 mm |
| D. | 20 mm |
| Answer» E. | |
| 7. |
The ratio of the span L of the filler joists to the depth d from the underside of the joist to the top of the structural concrete, should not exceed |
| A. | 60 |
| B. | 45 |
| C. | 35 |
| D. | 25 |
| Answer» D. 25 | |
| 8. |
If p and d are pitch and gross diameter of rivets, the efficiency ( ) of the riveted joint, is given by |
| A. | = p/p - d |
| B. | = p/p + d |
| C. | = p - d/p |
| D. | = p + d/p |
| Answer» D. = p + d/p | |
| 9. |
Spans of continuous fillers are considered approximately equal if the longest span does not exceed the shortest span by more than |
| A. | 5 % |
| B. | 10 % |
| C. | 15 % |
| D. | 20 % |
| Answer» D. 20 % | |
| 10. |
The maximum axial load which is just sufficient to keep a column in a small deflected shape, is called |
| A. | crippling load |
| B. | buckling load |
| C. | critical load |
| D. | all the above |
| Answer» E. | |
| 11. |
The slenderness ratio of a column is zero when its length |
| A. | is zero |
| B. | is equal to its radius of gyration |
| C. | is supported on all sides throughout its length |
| D. | is between the points of zero moments |
| Answer» E. | |
| 12. |
The bending moment for filler joists at the middle of an intermediate span, is |
| A. | wl²/10 |
| B. | - wl²/10 |
| C. | - wl²/12 |
| D. | wl²/12 |
| Answer» E. | |
| 13. |
When a load is transferred through one surface to another surface in contact, the stress is known as |
| A. | tensile stress |
| B. | compressive stress |
| C. | shearing stress |
| D. | none of these |
| Answer» E. | |
| 14. |
A simply supported beam carrying a central load, will be safe in deflection if the ratio of its span to depth, is |
| A. | < 19 |
| B. | < 24 |
| C. | > 19 |
| D. | > 24 |
| Answer» C. > 19 | |
| 15. |
Strengths of a rivet in single shearing, in bearing and in tearing are 3425 kg, 4575 kg and 5025 kg respectively. If the load in the member is 35 tonnes, the number of rivets required, is |
| A. | 10 |
| B. | 11 |
| C. | 12 |
| D. | 13 |
| Answer» E. | |
| 16. |
The permissible bearing stress in steel, is |
| A. | 1500 kg/cm2 |
| B. | 1890 kg/cm2 |
| C. | 2025 kg/cm2 |
| D. | 2340 kg/cm2 |
| Answer» C. 2025 kg/cm2 | |
| 17. |
The permissible stress in bending for rolled steel I-beams and channels, is |
| A. | 1500 kg/cm2 |
| B. | 1575 kg/cm2 |
| C. | 945 kg/cm2 |
| D. | 1650 kg/cm2 |
| Answer» E. | |
| 18. |
The distance measured along one rivet line from the centre of a rivet to the centre of adjoining rivet on an adjacent parallel rivet line, is called |
| A. | pitch of rivet |
| B. | gauge distance of rivet |
| C. | staggered pitch |
| D. | all the above |
| Answer» D. all the above | |
| 19. |
The effective length of a simply supported beam with ends restrained against torsion, and also the ends of compression flange partially restrained against lateral bending, is given by |
| A. | l = span |
| B. | l = 0.85 span |
| C. | l = 0.75 span |
| D. | l = 0.7 span |
| Answer» C. l = 0.75 span | |
| 20. |
For a rectangular section, the ratio of the maximum and average shear stresses, is |
| A. | 1.5 |
| B. | 2.0 |
| C. | 2.5 |
| D. | 3.5 |
| Answer» B. 2.0 | |
| 21. |
For the steel member exposed to weather and accessible for repainting, the thickness of steel should not be less than (accepting the webs of Indian Standard rolled steel joists and channels). |
| A. | 4 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» C. 8 mm | |
| 22. |
The average shear stress for rolled steel beam section, is |
| A. | 845 kg/cm2 |
| B. | 945 kg/cm2 |
| C. | 1025 kg/cm2 |
| D. | 1500 kg/cm2 |
| Answer» C. 1025 kg/cm2 | |
| 23. |
The maximum permissible slenderness ratio of a member carrying loads resulting from wind, is |
| A. | 180 |
| B. | 200 |
| C. | 250 |
| D. | 300 |
| Answer» D. 300 | |
| 24. |
Live load |
| A. | varies in magnitude |
| B. | varies in position |
| C. | is expressed as uniformly distributed load |
| D. | all the above |
| Answer» E. | |
| 25. |
A structural member subjected to compressive stress in a direction parallel to its longitudinal axis, is generally known as |
| A. | column |
| B. | stanchion |
| C. | post |
| D. | all the above |
| Answer» E. | |
| 26. |
If the moment of inertia of a section about its axis is and its effective sectional area is , its radius of gyration r about the axis, is |
| A. | r = i/a |
| B. | r i/a) |
| C. | r = (i/a) |
| D. | r a/i) |
| Answer» C. r = (i/a) | |
| 27. |
To the calculated area of cover plates of a built-up beam, an allowance for rivet holes to be added, is |
| A. | 10 % |
| B. | 13 % |
| C. | 15 % |
| D. | 18 % |
| Answer» C. 15 % | |
| 28. |
IS : 800 - 1971 recommends that in a splice plate the number of rivets carrying calculated shear stress through a packing greater than 6 mm thick, is to be increased by 2.5% for every |
| A. | 1.00 mm thickness of packing |
| B. | 1.50 mm thickness of packing |
| C. | 2.0 mm thickness of packing |
| D. | 2.50 mm thickness of packing |
| Answer» D. 2.50 mm thickness of packing | |
| 29. |
A riveted joint may experience |
| A. | shear failure |
| B. | shear failure of plates |
| C. | bearing failure |
| D. | all the above |
| Answer» E. | |
| 30. |
The main advantage of a steel member, is: |
| A. | its high strength |
| B. | its gas and water tightness |
| C. | its long service life |
| D. | all the above |
| Answer» E. | |
| 31. |
A compression member consisting of angle sections may be a |
| A. | continuous member |
| B. | discontinuous single angle strut |
| C. | discontinuous double angle strut |
| D. | all the above |
| Answer» E. | |
| 32. |
Secant formula for direct stress in compression, is applicable only for slenderness ratio upto |
| A. | 120 |
| B. | 130 |
| C. | 140 |
| D. | 150 |
| Answer» D. 150 | |
| 33. |
The allowable stress in axial tension for rolled I-sections and channels, is taken as |
| A. | 1420 kg/cm2 |
| B. | 1500 kg/cm2 |
| C. | 2125 kg/cm2 |
| D. | 1810 kg/cm2 |
| Answer» C. 2125 kg/cm2 | |
| 34. |
P E to be 25% of the computed value of P and E respectively, the minimum value of the factor of safety is |
| A. | 1.00 |
| B. | 0.67 |
| C. | 1.67 |
| D. | 2.67 |
| Answer» D. 2.67 | |
| 35. |
If a pair of angles placed back to back in tension are connected by one leg of each angle, the net effective area of the section, is |
| A. | a - [b/{1 + 0.35 (b/a)}] |
| B. | a + [b/{1 + 0.35 (b/a)}] |
| C. | a - [b/{1 + 0.2 (b/a)}] |
| D. | a + [b/{1 + 0.2 (b/a)}] |
| Answer» E. | |
| 36. |
When a tension member consists of two channel sections, the allowance for rivet hole is made for two holes from |
| A. | each web |
| B. | each flange |
| C. | each web or one hole from each flange whichever is more |
| D. | each web or one hole from each flange whichever is less |
| Answer» E. | |
| 37. |
A beam is defined as a structural member subjected to |
| A. | axial loading |
| B. | transverse loading |
| C. | axial and transverse loading |
| D. | none of these |
| Answer» C. axial and transverse loading | |
| 38. |
For steel members not exposed to weather, the thickness of steel should not be less than |
| A. | 4.5 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» C. 8 mm | |
| 39. |
In a fillet weld placed on the sides of the base, the metal experiences |
| A. | shear |
| B. | tension |
| C. | compression |
| D. | all the above |
| Answer» E. | |
| 40. |
The slenderness ratio of lacing bars should not exceed |
| A. | 100 |
| B. | 120 |
| C. | 145 |
| D. | 180 |
| Answer» D. 180 | |
| 41. |
The ratio of longitudinal stress to strain within elastic limit, is known as |
| A. | modulus of elasticity |
| B. | shear modulus of elasticity |
| C. | bulk modulus of elasticity |
| D. | all the above |
| Answer» B. shear modulus of elasticity | |
| 42. |
The actual thickness of butt weld as compared to the thickness of plate is usually |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the above |
| Answer» B. less | |
| 43. |
The failure of a web plate takes place by yielding if the ratio of the clear depth to thickness of the web, is less than |
| A. | 45 |
| B. | 55 |
| C. | 62 |
| D. | 82 |
| Answer» E. | |
| 44. |
The external wind pressure acting on a roof depends on |
| A. | degree of permeability of roof |
| B. | slope of roof |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» C. both (a) and (b) | |
| 45. |
The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces is |
| A. | 150 |
| B. | 180 |
| C. | 250 |
| D. | 350 |
| Answer» D. 350 | |
| 46. |
In plastic analysis, the shape factor for circular sections, is |
| A. | 1.5 |
| B. | 1.6 |
| C. | 1.697 |
| D. | none of these |
| Answer» D. none of these | |
| 47. |
The mechanism method and the statical method give |
| A. | lower and upper bounds respectively on the strength of structure |
| B. | upper and lower bounds respectively on the strength of structure |
| C. | lower bound on the strength of structure |
| D. | upper bound on the strength of structure |
| Answer» C. lower bound on the strength of structure | |
| 48. |
The range of economical spacing of trusses varies from |
| A. | l/3 to l/5 |
| B. | l/4 to 2l/5 |
| C. | l/3 to l/2 |
| D. | 2l/5 to 3l/5, where l is span |
| Answer» B. l/4 to 2l/5 | |
| 49. |
The effective length of a double angle strut with angles placed back to back and connected to both the sides of a gusset plate, by not less than two rivets, is |
| A. | 0.5 l |
| B. | 0.67 l |
| C. | 0.85 l |
| D. | 2 l |
| Answer» D. 2 l | |
| 50. |
Diameter of a bolt hole is usually taken as |
| A. | gross diameter of bolt |
| B. | nominal diameter + 1.5 mm |
| C. | nominal diameter + 2.0 mm |
| D. | nominal diameter of bolt |
| Answer» C. nominal diameter + 2.0 mm | |