Design of Steel Structures MCQs with answers Page - 13

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Q. 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)

A

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Q. 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

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Q. Live load

  • (A) varies in magnitude
  • (B) varies in position
  • (C) is expressed as uniformly distributed load
  • (D) all the above

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Q. The maximum permissible slenderness ratio of a member carrying loads resulting from wind, is

  • (A) 180
  • (B) 200
  • (C) 250
  • (D) 300

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Q. 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

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Q. 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

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Q. 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

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Q. 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

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Q. 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

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Q. 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