MCQ Steel Structures

MCQ Steel Structures

Q1. The minimum pitch for rivets as per IS 800 is:

2.5 times the nominal diameter 3 times the nominal diameter 1.5 times the nominal diameter 2 times the nominal diameter

Q2. The phenomenon of sudden failure in slender compression members is called:

Yielding Buckling Shear Crippling

Q3. Which type of connection is preferred for members subjected to dynamic loads?

Riveted connection Welded connection Bolted connection Glued connection

Q4. The effective length of a compression member with both ends fixed is:

0.7L 0.5L L 2L

Q5. The connection resisting both shear and axial tension in bolts is:

Bearing type Friction type Combined connection Expansion bolt

Q6. Lacing in a built-up column is provided to:

Reduce buckling length Increase axial capacity Hold components together Increase lateral stiffness

Q7. Which method is commonly used for field welding?

Gas welding Submerged arc welding Shielded metal arc welding Resistance welding

Q8. Which of the following sections is best for a long compression member?

Angle section Circular hollow section I-section Tee-section

Q9. Which code governs design and construction of steel structures in India?

IS 456 IS 800 IS 875 IS 1893

Q10. Lug angles are used in steel structures to:

Transfer load from gusset plate Increase bolt strength Provide lateral support Improve aesthetics

Q11. The weakest plane in a fillet weld is along:

Throat Leg Toe Face

Q12. The yield stress of Fe410 grade structural steel is:

250 MPa 310 MPa 410 MPa 500 MPa

Q13. Which of the following stress combinations is used for limit state of collapse?

Dead load only Dead load + Live load Dead load + Live load + Wind/Earthquake Live load only

Q14. The most economical section for a cantilever beam subjected to uniform loading is:

Rectangular section I-section Circular section Hollow square section

Q15. Which test is carried out on structural steel to assess ductility?

Tensile test Izod test Charpy test Shear test

Q16. The plastic modulus of a section is the ratio of:

Plastic moment to yield stress Elastic moment to yield stress Ultimate moment to yield stress Section modulus to factor of safety

Q17. In welded connections, intermittent welds are provided when:

Full-length weld weakens member Cost reduction is necessary Heat effects need control All of the above

Q18. The failure of a tension member due to rupture occurs at:

Net section Gross section Shear plane Mid-length

Q19. As per IS 800, the maximum permissible slenderness ratio for a tension member is:

350 400 250 180

Q20. The minimum edge distance for bolt holes as per IS 800 is:

1.7 times the bolt diameter 1.5 times the bolt diameter 2.0 times the bolt diameter 1.25 times the bolt diameter

Q21. The slenderness ratio of a column is defined as:

Effective length divided by its radius of gyration Actual length divided by its depth Effective length divided by area Actual length divided by breadth

Q22. In steel structures, lateral torsional buckling occurs in:

Compression members Tension members Flexural members None of the above

Q23. The minimum thickness of gusset plates as per IS 800 is:

4 mm 6 mm 8 mm 10 mm

Q24. Lug angles are typically used in:

Tension members Compression members Columns Purlins

Q25. The most suitable type of weld for joining thin sheets is:

Fillet weld Slot weld Plug weld Spot weld

Q26. The value of partial safety factor for loads as per IS 800 for limit state of strength is:

1.5 1.0 2.0 1.2

Q27. Riveted connections are classified based on:

Type of load transfer Number of rivets Rivet head type Length of rivet

Q28. The standard value of yield stress for Fe250 steel is:

410 MPa 250 MPa 500 MPa 215 MPa

Q29. Which of the following improves lateral stability in steel beams?

Web stiffeners Side plates Lateral restraints Doubling the flange thickness

Q30. Which welding process uses a continuously fed consumable wire?

Shielded Metal Arc Welding Submerged Arc Welding Oxy-acetylene welding Resistance welding

Q31. Which type of stress is primarily induced in the flange of an I-section beam under bending?

Shear stress Axial stress Bending stress Torsional stress

Q32. The purpose of web stiffeners in steel beams is to:

Increase bending resistance Prevent web buckling Increase flange thickness Reduce flange stress

Q33. In a bolted connection, the failure due to bearing occurs at:

Bolt shank Edge of the bolt hole Plate thickness Plate edge

Q34. In steel construction, cleats are used to:

Connect secondary beams to main beams Provide lateral restraints Increase slenderness Reinforce gusset plates

Q35. The most economical beam cross-section for resisting bending is:

Rectangular section I-section T-section Hollow circular section

Q36. Which of the following is a semi-rigid connection in steel structures?

Welded joint Bolted connection Riveted joint All of these

Q37. The partial safety factor for material strength in steel design (limit state) is:

1.10 1.25 1.50 1.00

Q38. Which connection type resists both shear and moment efficiently?

Simple connection Moment connection Pin connection Flexible connection

Q39. The typical end condition of a column affecting its effective length is:

Hinged at both ends Fixed at both ends Fixed-hinged All of these

Q40. In a tension member with bolted joints, net sectional area is calculated by:

Deducting hole areas from gross area Adding bolt area to gross area Using gross area only Considering effective length only

Q41. Which IS code is used for the general construction of steel structures in India?

IS 456 IS 800 IS 3370 IS 1893

Q42. The maximum permissible slenderness ratio for a compression member carrying dead load and superimposed load is:

180 250 350 400

Q43. The minimum edge distance for hand-driven rivets as per IS codes is:

1.5 times the hole diameter 2.5 times the rivet diameter 3 times the hole diameter 1.7 times the rivet diameter

Q44. Which of the following is used to increase the lateral stability of steel columns?

Lacing Gusset plates Bracing All of these

Q45. Bolted connections failing in bearing will primarily show:

Shearing of bolts Elongation of bolt holes Buckling of plate Tearing of plate

Q46. In a welded joint, throat thickness is:

The size of the weld The minimum distance from the root to the face of weld Length of weld Depth of weld penetration

Q47. The yield strength of Fe410 steel grade is:

250 MPa 410 MPa 200 MPa 360 MPa

Q48. The limiting slenderness ratio for members carrying load with wind/seismic forces only is:

180 250 350 400

Q49. Which type of weld is typically used to join two plates placed edge to edge?

Butt weld Fillet weld Slot weld Spot weld

Q50. As per IS 800, the partial safety factor for steel strength is:

1.15 1.10 1.50 1.00

Q51. In a steel beam, lateral torsional buckling is prevented by:

Providing web stiffeners Reducing span Lateral restraints at compression flange Increasing flange thickness

Q52. The effective length of a simply supported steel column is:

0.7L 1.0L 2.0L 0.5L

Q53. The connection formed by placing two plates parallel to each other and welding along their edges is called:

Fillet weld Plug weld Slot weld Butt weld

Q54. Which factor majorly influences the slenderness ratio of a steel column?

Length and least radius of gyration Width of flange Thickness of web Bolt hole diameter

Q55. For compression members, the slenderness ratio should generally not exceed:

180 250 350 400

Q56. In welded connections, intermittent welds are generally used for:

Aesthetic appearance Heat control and economy Increasing thickness Preventing bending

Q57. The term 'block shear failure' in tension members refers to:

Shearing along the bolt line and tearing at end Crushing of bolts Buckling of plate Tension yielding of plate

Q58. What is the most effective shape for resisting torsion in steel members?

I-section T-section Circular hollow section Channel section

Q59. In steel construction, 'gusset plates' are primarily used for:

Floor slab support Connecting members at a joint Lateral bracing Purlin support

Q60. Fillet weld size is governed by:

Thickness of thinner part Thickness of thicker part Total weld length Number of weld runs

Q61. The type of bolt commonly used in steel structures where repeated load reversal occurs is:

Black bolt HSFG bolt Foundation bolt Carriage bolt

Q62. As per IS 800, the partial safety factor for load combinations involving wind/seismic forces is:

1.2 1.5 1.0 1.3

Q63. When a plate girder is subjected to large shear forces, it is economical to:

Increase flange area Increase web thickness Provide web stiffeners Increase overall depth

Q64. Weld symbol positioned on the continuous line in a welding drawing represents:

Weld on arrow side Weld on other side Weld on both sides No weld

Q65. The most effective connection type for transferring axial tension in a steel tie member is:

Riveted connection Fillet weld connection Full penetration butt weld HSFG bolted connection