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MCQs

Total Questions : 65 | Page 3 of 7 pages
Question 21. The steel plate is bent into a circular path of radius 10 metres. If the plate section be 120 mm wide and 20 mm thick, then calculate the maximum bending stress. [Consider Young’s modulus = 200000 N/mm²].
  1.    350 N/mm²
  2.    400 N/mm²
  3.    200 N/mm²
  4.    500 N/mm²
 Discuss Question
Answer: Option C. -> 200 N/mm²
Answer: (c).200 N/mm²
Question 22. What is the section modulus (Z) for a rectangular section?
  1.    bd²/6
  2.    a³/6
  3.    bD³-bd³
  4.    D⁴-d⁴
 Discuss Question
Answer: Option A. -> bd²/6
Answer: (a).bd²/6
Question 23. The bending stress in a beam is ______ to bending moment.
  1.    Less than
  2.    Directly proportionate
  3.    More than
  4.    Equal
 Discuss Question
Answer: Option B. -> Directly proportionate
Answer: (b).Directly proportionate
Question 24. To what radius an Aluminium strip 300 mm wide and 40mm thick can be bent, if the maximum stress in a strip is not to exceed 40 N/mm². Take young’s modulus for Aluminium is 7×10⁵ N/mm².
  1.    45m
  2.    52m
  3.    35m
  4.    65m
 Discuss Question
Answer: Option C. -> 35m
Answer: (c).35m
Question 25. _________ of a beam is a measure of its resistance against deflection.
  1.    Strength
  2.    Stiffness
  3.    Deflection
  4.    Slope
 Discuss Question
Answer: Option B. -> Stiffness
Answer: (b).Stiffness
Question 26. The hoop stress is also known as ______
  1.    Parametrical stress
  2.    Surface stress
  3.    Circumferential stress
  4.    Lateral stress
 Discuss Question
Answer: Option C. -> Circumferential stress
Answer: (c).Circumferential stress
Question 27. The ____ of strongest beam that can be cut out of a circular section of diameter D.
  1.    Load
  2.    Size
  3.    material
  4.    cross section
 Discuss Question
Answer: Option B. -> Size
Answer: (b).Size
Question 28. A Steel rod 200 mm diameter is to be bent into a circular arc section. Find radius of curvature. Take f = 120N/mm² & E = 2×10⁵ N/mm².
  1.    134m
  2.    166m
  3.    162m
  4.    174m
 Discuss Question
Answer: Option B. -> 166m
Answer: (b).166m
Question 29. The moment which resists the external bending is called ______
  1.    Moment of shear
  2.    Tolerating moment
  3.    Moment of resistance
  4.    Maximum bending moment
 Discuss Question
Answer: Option C. -> Moment of resistance
Answer: (c).Moment of resistance
Question 30. ______ strength is caused by a moment of resistance offered by a section.
  1.    Shear
  2.    Flexural
  3.    Axial
  4.    Longitudinal
 Discuss Question
Answer: Option B. -> Flexural
Answer: (b).Flexural

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