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MCQs

Total Questions : 53 | Page 4 of 6 pages
Question 31. A tensile load of 50kN is gradually applied to a circular bar of 5cm diameter and 5m long. What is the strain energy absorbed by the rod (E = 200GPa)?
  1.    14 N-m
  2.    15.9 N-mm
  3.    15.9 N-m
  4.    14 N-mm
 Discuss Question
Answer: Option C. -> 15.9 N-m
Answer: (c).15.9 N-m
Question 32. The strain energy stored in a specimen when stained within the elastic limit is known as __________
  1.    Resilience
  2.    Plasticity
  3.    Malleability
  4.    Stain energy
 Discuss Question
Answer: Option A. -> Resilience
Answer: (a).Resilience
Question 33. A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5m long. What is the strain energy in the rod if the load is applied suddenly (E = 2×10⁵ N/mm²)?
  1.    143.23 N-m
  2.    140.51 N-m
  3.    135.145 N-m
  4.    197.214 N-m
 Discuss Question
Answer: Option A. -> 143.23 N-m
Answer: (a).143.23 N-m
Question 34. The ability of a material to absorb energy when elastically deformed and to return it when unloaded is called __________
  1.    Elasticity
  2.    Resilience
  3.    Plasticity
  4.    Strain resistance
 Discuss Question
Answer: Option B. -> Resilience
Answer: (b).Resilience
Question 35. The maximum strain energy stored at elastic limit is __________
  1.    Resilience
  2.    Proof resilience
  3.    Elasticity
  4.    Malleability
 Discuss Question
Answer: Option B. -> Proof resilience
Answer: (b).Proof resilience
Question 36. A tensile load of 60kN is suddenly applied to a circular bar of 4cm and 5m length. What will be the strain energy absorbed by the rod if E=2×10⁵ N/mm²?
  1.    140.5 N-m
  2.    100 N-m
  3.    197.45 N-m
  4.    143.2 N-m
 Discuss Question
Answer: Option D. -> 143.2 N-m
Answer: (d).143.2 N-m
Question 37. A tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm. What will be the instantaneous stress in bar?
  1.    100 N/mm²
  2.    120 N/mm²
  3.    150 N/mm²
  4.    250 N/mm²
 Discuss Question
Answer: Option D. -> 250 N/mm²
Answer: (d).250 N/mm²
Question 38. 2 tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy absorbed in the bar if E=1×10⁵ N/mm²?
  1.    312.5 N-m
  2.    314500 N-mm
  3.    1250 N-m
  4.    634 N-m
 Discuss Question
Answer: Option C. -> 1250 N-m
Answer: (c).1250 N-m
Question 39. A steel rod is 2m long and 50mm in diameter. An axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous elongation produced in the rod if E=22GN/m²?
  1.    0.0097 mm
  2.    1.0754 mm
  3.    1.6354 mm
  4.    1.0186 mm
 Discuss Question
Answer: Option D. -> 1.0186 mm
Answer: (d).1.0186 mm
Question 40. A steel rod is 2m long and 50mm in diameter. A axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous stress induced in the rod?
  1.    101.89 N/mm²
  2.    94.25 N/mm²
  3.    130.45 N/mm²
  4.    178.63 N/mm²
 Discuss Question
Answer: Option A. -> 101.89 N/mm²
Answer: (a).101.89 N/mm²

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