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MCQs

Total Questions : 53 | Page 2 of 6 pages
Question 11. What will be the amount of axial pull be applied on a a 4cm diameter bar to get an instantaneous stress value of 143 N/mm²?
  1.    50kN
  2.    60kN
  3.    70kN
  4.    80kN
 Discuss Question
Answer: Option B. -> 60kN
Answer: (b).60kN
Question 12. What is strain energy?
  1.    The work done by the applied load In stretching the body
  2.    The strain per unit volume
  3.    The force applied in stretching the body
  4.    The stress per unit are
 Discuss Question
Answer: Option A. -> The work done by the applied load In stretching the body
Answer: (a).The work done by the applied load In stretching the body
Question 13. What will be the instantaneous stress produced in a bar 10cm² in area ans 4m long by the sudden application of tensile load of unknown magnitude, if the extension of the bar due to suddenly applied load is 1.35mm if E = 2×10⁵ N/mm²?
  1.    67.5 N/mm²
  2.    47 N/mm²
  3.    55.4 N/mm²
  4.    78.5 N/mm²
 Discuss Question
Answer: Option A. -> 67.5 N/mm²
Answer: (a).67.5 N/mm²
Question 14. What is the strain energy stored in a body when the load is applied gradually?
  1.    σE/V
  2.    σE²/V
  3.    σV²/E
  4.    σV²/2E
 Discuss Question
Answer: Option D. -> σV²/2E
Answer: (d).σV²/2E
Question 15. What is the relation between maximum stress induced due to gradual load to maximum stress the sudden load?
  1.    Maximum stress in gradual load is equal to the maximum stress in sudden load
  2.    Maximum stress in gradual load is half to the maximum stress in sudden load
  3.    Maximum stress in gradual load is twice to the maximum stress in sudden load
  4.    Maximum stress in gradual load is four times to the maximum stress in sudden load
 Discuss Question
Answer: Option B. -> Maximum stress in gradual load is half to the maximum stress in sudden load
Answer: (b).Maximum stress in gradual load is half to the maximum stress in sudden load
Question 16. A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy in the bar if E=1×10⁵ N/mm²?
  1.    312.5 N-m
  2.    314500 N-mm
  3.    245.5 N-m
  4.    634 N-m
 Discuss Question
Answer: Option A. -> 312.5 N-m
Answer: (a).312.5 N-m
Question 17. A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the strain energy absorbed by the rod if E=1×10⁵ N/mm²?
  1.    100 N-m
  2.    132 N-m
  3.    148 N-m
  4.    143.2 N-m
 Discuss Question
Answer: Option D. -> 143.2 N-m
Answer: (d).143.2 N-m
Question 18. A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm. What will be the stress in bar?
  1.    100 N/mm²
  2.    120 N/mm²
  3.    125 N/mm²
  4.    150 N/mm²
 Discuss Question
Answer: Option C. -> 125 N/mm²
Answer: (c).125 N/mm²
Question 19. A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the stress in the rod if E=1×10⁵ N/mm²?
  1.    1.19mm
  2.    2.14mm
  3.    3.45mm
  4.    4.77mm
 Discuss Question
Answer: Option D. -> 4.77mm
Answer: (d).4.77mm
Question 20. A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5cm long. What will be the stress in the rod if E=1×10⁵ N/mm²?
  1.    47.746 N/mm²
  2.    34.15 N/mm²
  3.    48.456 N/mm²
  4.    71.02 N/mm²
 Discuss Question
Answer: Option A. -> 47.746 N/mm²
Answer: (a).47.746 N/mm²

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