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MCQs

Total Questions : 735 | Page 71 of 74 pages
Question 701. 4.  For structural analysis, Maxwell's reciprocal theorem can be applied to :
  1.    plastic structures
  2.    elastic structures
  3.    symmetrical structures
  4.    all the above.
 Discuss Question
Answer: Option B. -> elastic structures
Question 702. 5. For structural analysis of forces, the method refers to
  1.    moment-area-theorem
  2.    three-moment equation Maxwell's reciprocal theorem
  3.    a fixed ended beam carrying a concentrated load at the
  4.    none of these.
 Discuss Question
Answer: Option A. -> moment-area-theorem
Question 703. 7.  The tensile force required to cause an elongation of 0.045 mm in a steel rod of 1000 mm length and 12 mm diameter, where E = 2 x 106 kg/cm2.is
  1.    166 kg
  2.    102 kg
  3.    204 kg
  4.    74 kg
 Discuss Question
Answer: Option B. -> 102 kg
Question 704. 6. Influence lines are drawn for structures
  1.    of any type
  2.    statically determinate
  3.    (b) pin-jointed truss
  4.    none of these.
 Discuss Question
Answer: Option A. -> of any type
Question 705. 8. For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value of Poisson's ratio is
  1.    0.15
  2.    0.2
  3.    0.25
  4.    0.40.
 Discuss Question
Answer: Option C. -> 0.25
Question 706. 0.  During a tensile test on a ductile material
  1.    nominal stress at fracture is higher than the ultimate stress
  2.    true stress at fracture is higher than the ultimate stress
  3.    true stress at fracture is the same as the ultimate stress
  4.    none of these.
 Discuss Question
Answer: Option B. -> true stress at fracture is higher than the ultimate stress
Question 707. 9.  The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is
  1.    1/4
  2.    ?
  3.    1/16
  4.    15/16
 Discuss Question
Answer: Option D. -> 15/16
Question 708. 1.  A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum shear force in the wooden log is
  1.    50 N at each end
  2.    50 N at the centre
  3.    100 N at the centre
  4.    none of these,
 Discuss Question
Answer: Option C. -> 100 N at the centre
Question 709. 2.  A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be three times the maximum tensile stress, centre of gravity of the section from flange side is
  1.    h/4
  2.    h/3
  3.    h/2
  4.    2/3 h.
 Discuss Question
Answer: Option A. -> h/4
Question 710. 3. While testing a cast iron beam (2.5 cm x 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is :
  1.    960 kg/cm2
  2.    980 kg/cm2
  3.    1000 kg/cm2
  4.    1200 kg/cm2.
 Discuss Question
Answer: Option A. -> 960 kg/cm2

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