Design of Steel Structures Objective Questions - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. 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

2. 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

3. 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

4. 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

5. 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

6. The risk coefficient k, depends on
(A) Mean probable design life of structures
(B) Basic wind speed
(C) Both (A) and (B)
(D) None of the above

7. For eccentrically loaded columns, the bending factor is
(A) Cross-sectional area of column/Radius of gyration
(B) Radius of gyration/Cross-sectional area of column
(C) Cross-sectional area of column/Section modulus of the section
(D) Section modulus of the section/Cross-sectional area of column

8. The net area of round bars to resist the tension, is the area of cross section at
(A) Mid-section
(C) Difference of (a) and (b)
(D) None of these

9. The bracing between two columns of a steel tank will be designed to resist
(A) Horizontal shear due to wind or earthquake only
(B) Horizontal, shear due to wind or earthquake + 2.5% of column loads
(C) Column loads + 2.5% of horizontal shear due to wind or earthquake
(D) Column loads + full horizontal shear due to wind or earthquake

10. A column splice is used to increase
(A) Length of the column
(B) Strength of the column
(C) Cross-sectional area of the column
(D) None of these

11. A beam may be designed as a cased beam if
(A) Section is of double open channel form with the webs not less than 40 mm apart
(B) Overall depth and width of the steel section do not exceed 750 and 450 mm respectively
(C) Beam is solidly encased in concrete with 10 mm aggregate having 28 days strength 160 kg/cm2
(D) All the above

12. The bracing provided in the plane of end posts is called
(A) Sway bracing
(B) Portal bracing
(C) Top lateral bracing
(D) Bottom lateral bracing

13. In a built up beam actual bending compressive stress fbc is given by (when y1 is the distance of the edge of the beam from the neutral axis).
(A) fbc = (M/Ixx) × y1
(B) fbc = (Ixx/M) × y1
(C) fbc = (Ixx/M) + y1
(D) fbc = (M/Ixx) + y1

14. If the thickness of a structural member is small as compared to its length and width, it is classified as
(A) One dimensional
(B) Two dimensional
(C) Three dimensional
(D) None of these

15. The statical method of plastic analysis satisfies
(A) Equilibrium and mechanism conditions
(B) Equilibrium and plastic moment conditions
(C) Mechanism and plastic moment conditions
(D) Equilibrium condition only

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