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MCQs

Total Questions : 98 | Page 10 of 10 pages
Question 91. The bending stress is ____________
  1.    Directly proportional to the distance of layer from the neutral layer
  2.    Inversely proportional to the distance of layer from the neutral layer
  3.    Directly proportional to the neutral layer
  4.    Does not depend on the distance of layer from the neutral layer
 Discuss Question
Answer: Option A. -> Directly proportional to the distance of layer from the neutral layer
Answer: (a).Directly proportional to the distance of layer from the neutral layer
Question 92. The safe stress for a hollow steel column which carries an axial load of 2100 kN is 125 MN/m². if the external diameter of the column is 30cm, what will be the internal diameter?
  1.    25 cm
  2.    26.19cm
  3.    30.14 cm
  4.    27.9 cm
 Discuss Question
Answer: Option B. -> 26.19cm
Answer: (b).26.19cm
Question 93. Consider a 250mmx15mmx10mm steel bar which is free to expand is heated from 15C to 40C. what will be developed?
  1.    Compressive stress
  2.    Tensile stress
  3.    Shear stress
  4.    No stress
 Discuss Question
Answer: Option D. -> No stress
Answer: (d).No stress
Question 94. Consider two bars A and B of same material tightly secured between two unyielding walls. Coefficient of thermal expansion of bar A is more than that of B. What are the stresses induced on increasing the temperature?
  1.    Tension in both the materials
  2.    Tension in material A and compression in material B
  3.    Compression in material A and tension in material B
  4.    Compression in both the materials
 Discuss Question
Answer: Option D. -> Compression in both the materials
Answer: (d).Compression in both the materials
Question 95. What will be the unit of compressive stress?
  1.    N
  2.    N/mm
  3.    N/mm²
  4.    Nmm
 Discuss Question
Answer: Option C. -> N/mm²
Answer: (c).N/mm²
Question 96. A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be 3 times the maximum tensile stress, centre of gravity of the section from flange side is ____________
  1.    h/2
  2.    H/3
  3.    H/4
  4.    2/3h
 Discuss Question
Answer: Option C. -> H/4
Answer: (c).H/4
Question 97. A solid circular shaft of diameter d is subjected to a torque T. the maximum normal stress induced in the shaft is ____________
  1.    Zero
  2.    16T/πd³
  3.    32T/πd³
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> 16T/πd³
Answer: (b).16T/πd³
Question 98. When a rectangular beam is loaded transversely, the maximum compressive stress develops on ____________
  1.    Bottom fibre
  2.    Top fibre
  3.    Neutral axis
  4.    Every cross-section
 Discuss Question
Answer: Option B. -> Top fibre
Answer: (b).Top fibre

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