Design of Steel Structures

161. Rolled steel angle sections are classified as

  1. Equal angles
  2. Unequal angles
  3. Bulb angles
  4. All the above

Correct answer: (D)
All the above

162. Rolled steel beams are designated by Indian Standard series and its

  1. Weight per metre and depth of its section
  2. Depth of section and weight per metre
  3. Width of flange and weight per metre
  4. Weight per metre and flange width

Correct answer: (B)
Depth of section and weight per metre

163. Rolled steel beams are:

  1. Mainly used to resist bending stress
  2. Used as independent sections to resist compressive stress
  3. Used as independent sections to resist tensile stress
  4. All the above

Correct answer: (D)
All the above

164. Rolled steel Tee-sections are used

  1. As columns
  2. With flat strips to connect plates in steel rectangular tanks
  3. As built up sections to resist axial tension
  4. None of these

Correct answer: (B)
With flat strips to connect plates in steel rectangular tanks

165. Secant formula for direct stress in compression, is applicable only for slenderness ratio upto

  1. 120
  2. 130
  3. 140
  4. 150

Correct answer: (C)
140

166. Select the correct statement

  1. Material cost of a rivet is higher than that of a bolt
  2. Tensile strength of a bolt is lesser than that of a rivet
  3. Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings
  4. Riveting is less noisy than bolting

Correct answer: (C)
Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings

167. Shape factor is a property which depends

  1. Only on the ultimate stress of the material
  2. Only on the yield stress of the material
  3. Only on the geometry of the section
  4. Both on the yield stress and ultimate stress of material

Correct answer: (C)
Only on the geometry of the section

168. Shear buckling of web in a plate girder is prevented by using

  1. Vertical intermediate stiffener
  2. Horizontal stiffener at neutral axis
  3. Bearing stiffener
  4. None of the above

Correct answer: (A)
Vertical intermediate stiffener

169. Slenderness ratio of a compression member is

  1. Moment of inertia/Radius of gyration
  2. Effective length/Area of cross-section
  3. Radius of gyration/Effective length
  4. Radius of gyration/ Area of cross-section

Correct answer: (C)
Radius of gyration/Effective length

170. Spans of continuous fillers are considered approximately equal if the longest span does not exceed the shortest span by more than

  1. 5 %
  2. 10 %
  3. 15 %
  4. 20 %

Correct answer: (C)
15 %

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