Design of Steel Structures MCQ - Set 03 - ObjectiveBooks

Design of Steel Structures MCQ - Set 03

Practice Test: Question Set - 03

1. Lug angle is
    (A) Used with single angle member
    (B) Not used with double angle member
    (C) Used with channel member
    (D) All the above

2. Compression members composed of two channels back-to-back and separated by a small distance are connected together by riveting so that the minimum slenderness ratio of each member between the connections, does not exceed
    (A) 40
    (B) 50
    (C) 60
    (D) 70

3. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of
    (A) 75 t2/h
    (B) 125 t3/h2
    (C) 125 t2/h
    (D) 175 t2/h
Where, t = the web thickness in mm and h = the outstand of stiffener in mm

4. When the upper column does not provide full bearing area over lower column, the column splice is provided with the following assumption
    (A) Bearing plate is assumed as a short beam to transmit the axial load to the lower column section
    (B) Axial load is assumed to be taken by flanges
    (C) Load transmitted from the flanges of upper column and reactions from the flanges of lower columns are equal and form a couple
    (D) All the above

5. For the economical design of a combined footing to support two equal column loads, the projections of beams in lower tier are kept such that bending moment under column is equal to
    (A) Bending moment at the centre of the beam
    (B) Half the bending moment at the centre of the beam
    (C) Twice the bending moment at the centre of the beam
    (D) None of these

6. The allowable shear stress in the web of mild steel beams decreases with
    (A) Decrease in h/t ratio
    (B) Increase in h/t ratio
    (C) Decrease in thickness
    (D) Increase in height
Where 'h' is height and ‘t’ is thickness

7. On eccentrically loaded columns, the equivalent axial load may be obtained by
    (A) Adding the axial load, eccentric load, the product of the bending moment due to eccentric load and the appropriate bending factor
    (B) Adding the axial load and eccentric load and subtracting the product of bending moment and appropriate bending factor
    (C) Dividing the sum of axial load and eccentric load by the product of the bending moment and appropriate bending factor
    (D) None of these

8. Stiffeners are used in a plate girder
    (A) To reduce the compressive stress
    (B) To reduce the shear stress
    (C) To take the bearing stress
    (D) To avoid bulking of web plate

9. As compared to field rivets, the shop rivets are
    (A) Stronger
    (B) Weaker
    (C) Equally strong
    (D) Any of the above

10. A fillet weld whose axis is parallel to the direction of the applied load, is known as
    (A) Diagonal filler weld
    (B) End fillet weld
    (C) Side fillet weld
    (D) All the above

11. In a truss girder of a bridge, a diagonal consists of mild steel flat 4001.S.F. and carries a pull of 80 tonnes. If the gross-diameter of the rivet is 26 mm, the number of rivets required in the splice, is
    (A) 6
    (B) 7
    (C) 8
    (D) 9

12. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
    (A) Black bolt
    (B) Ordinary unfinished bolt
    (C) Turned and fitted bolt
    (D) High strength bolt

13. Factor of safety is the ratio of
    (A) Yield stress to working stress
    (B) Tensile stress to working stress
    (C) Compressive stress to working stress
    (D) Bearing stress to working stress

14. The size of a butt weld is specified by the effective throat thickness which in the case of incomplete penetration, is taken as
    (A) ½ of the thickness of thicker part
    (B) ¾ of the thickness of thicker part
    (C) ¾ of the thickness of thinner part
    (D) 7/8 of the thickness of thinner part

15. The best arrangement to provide unified behaviour in built up steel columns is by
    (A) Lacing
    (B) Battening
    (C) Tie plates
    (D) Perforated cover plates

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