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MCQs

Total Questions : 903 | Page 85 of 91 pages
Question 841. 1.  The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and channels on the effective section, is
  1.    1500 kg/cm2
  2.    1420 kg/cm2
  3.    1650 kg/cm2
  4.    2285 kg/cm2
 Discuss Question
Answer: Option C. -> 1650 kg/cm2
Question 842. 0. The allowable stress in axial tension for rolled I-sections and channels, is taken as
  1.    1420 kg/cm2
  2.    1500 kg/cm2
  3.    2125 kg/cm2
  4.    2285 kg/cm2
 Discuss Question
Answer: Option B. -> 1500 kg/cm2
Question 843. 2. Modified moment of inertia of sections with a single web, is equal to moment of inertia of the section about Y-Y axis at the point of maximum bending moment and is multiplied by the ratio of
  1.    area of compression flange at the minimum bending moment to the corresponding area at the point of maximum bending moment
  2.    area of tension flange at the minimum bending moment of the corresponding area at the point of maximum bending moment
  3.    total area of flanges at the maximum bending moment to the corresponding area at the point of maximum bending moment
  4.    none of these.
 Discuss Question
Answer: Option C. -> total area of flanges at the maximum bending moment to the corresponding area at the point of maximum bending moment
Question 844. 3.  According to IS : 800-1962 the permissible bending stress in steel slab plates, is
  1.    1500 kg/cm2
  2.    1420 kg/cm2
  3.    2125 kg/cm2
  4.    1890 kg/cm2.
 Discuss Question
Answer: Option D. -> 1890 kg/cm2.
Question 845. 8.  The main assumption of the method of simple design of steel frame work, is
  1.    beams are simply supported
  2.    all connections of beams, girders and trusses are vir-tually flexible
  3.    members in compression are subjected to forces applied at appropriate eccentricities
  4.    all the above.
 Discuss Question
Answer: Option D. -> all the above.
Question 846. 9.  For the steel member exposed to weather and accessible for repainting, the thickness of steel should not be less than
  1.    4 mm
  2.    6 mm
  3.    8 mm
  4.    10 mm
 Discuss Question
Answer: Option B. -> 6 mm
Question 847. 1.  For steel members not exposed to weather, the thickness of steel should not be less than
  1.    4.5 mrn
  2.    6 mm
  3.    8 mm
  4.    10 mm.
 Discuss Question
Answer: Option B. -> 6 mm
Question 848. 5.  The greatest permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to
  1.    180 t
  2.    220 t
  3.    230 t
  4.    270 t.
 Discuss Question
Answer: Option D. -> 270 t.
Question 849. 6.  The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to
  1.    150 t
  2.    160 t
  3.    170 t
  4.    180 t
 Discuss Question
Answer: Option D. -> 180 t
Question 850. 7.  The method of design of steel framework for greatest rigidity and economy in weight, is known as
  1.    simply design
  2.    semi-rigid design
  3.    fully rigid design
  4.    none of these.
 Discuss Question
Answer: Option C. -> fully rigid design

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