Design of Steel Structures MCQ Questions & Answers
1. Select the correct statement
(A) Material cost of a rivet is higher than that of a bolt
(B) Tensile strength of a bolt is lesser than that of a rivet
(C) Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings
(D) Riveting is less noisy than bolting
2. The forces acting on the web splice of a plate girder are
(A) Axial forces
(B) Shear and axial forces
(C) Shear and bending forces
(D) Axial and bending forces
3. Generally the purlins are placed at the panel points so as to avoid
(A) Axial force in rafter
(B) Shear force in rafter
(C) Deflection of rafter
(D) Bending moment in rafter
4. Which of the following sections should preferably be used at places where torsion occurs?
(A) Angle section
(B) Channel section
(C) Box type section
(D) Any of the above
5. Other conditions being same, the load factor in indeterminate structures is
(A) Equal to load factor in determinate structures
(B) More than the load factor in determinate structures
(C) Less than the load factor in determinate structures
(D) Unpredictable
6. Rivets connecting flange angles to cover plates in a plate girder are subjected to
(A) Horizontal shear only
(B) Vertical load only
(C) Both (A) and (B)
(D) None of the above
7. The effective length of a fillet weld should not be less than
(A) Two times the weld size
(B) Four times the weld size
(C) Six times the weld size
(D) Weld size
8. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate
(A) Fully by direct bearing
(B) Fully through fastenings
(C) 50% by direct bearing and 50% through fastenings
(D) 75% by direct bearing and 25% through fastenings
9. If the floor is supported at or near the bottom but top chords of a bridge is not braced, then the bridge is called
(A) Deck type
(B) Through type
(C) Half through type
(D) Double deck type
10. The elastic strain for steel is about
(A) 1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain
(B) 1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain
(C) 1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain
(D) 1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain
11. In the virtual work method, the virtual quantity is
(A) Displacement
(B) Load
(C) Slope
(D) Moment
12. In moment resistant connections, the moment resistance of riveted connection depends upon
(A) Shear in rivets
(B) Compression in rivets
(C) Tension in rivets
(D) Strength of rivets in bearing
13. The portal bracing in a truss bridge is used to
(A) Transfer load from top of end posts to bearings
(B) Keep the rectangular shape of the bridge cross-section
(C) Stiffen the structure laterally
(D) Prevent the sides-way buckling of top chord
14. The maximum permissible span of asbestos cement sheets is
(A) 650 mm
(B) 810 mm
(C) 1250 mm
(D) 1680 mm
15. Lacing bars in a steel column should be designed to resist
(A) Bending moment due to 2.5% of the column load
(B) Shear force due to 2.5% of the column load
(C) 2.5% of the column load
(D) Both (A) and (B)
16. The moment of the couple set up in a section of a beam by the longitudinal compressive and tensile force, is known as
(A) Bending moment
(B) Moment of resistance
(C) Flexural stress moment
(D) None of these
17. The thickness of the web of a mild steel plate girder is less than d/200. If only one horizontal stiffener is used, it is placed at
(A) The neutral axis of the section
(B) 2/3rd of the depth of the neutral axis from the compression flange
(C) 2/5th of the depth of the neutral axis from the compression flange
(D) 2/5th of the height of the neutral axis from tension flange
18. Shear buckling of web in a plate girder is prevented by using
(A) Vertical intermediate stiffener
(B) Horizontal stiffener at neutral axis
(C) Bearing stiffener
(D) None of the above
19. The most commonly used sections in lateral system to carry shear force in built up columns, are
(A) Rolled steel flats
(B) Rolled angles
(C) Rolled channels
(D) All the above
20. The stress in the wall of a thin cylinder subjected to internal pressure, is
(A) Hoop compression
(B) Shear
(C) Torsional shear
(D) Hoop tension