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MCQs

Total Questions : 90 | Page 9 of 9 pages
Question 81. A rod 200cm long is subjected to an axial pull due to which it elongates about 2mm. Calculate the amount of strain?
  1.    0.001
  2.    0.01
  3.    0.02
  4.    0.002
 Discuss Question
Answer: Option A. -> 0.001
Answer: (a).0.001
Question 82. Some structural members subjected to a long time sustained loads deform progressively with time especially at elevated temperatures. What is such a phenomenon called?
  1.    Fatigue
  2.    Creep
  3.    Creep relaxation
  4.    Fracture
 Discuss Question
Answer: Option B. -> Creep
Answer: (b).Creep
Question 83. The property by which a body returns to its original shape after removal of the force is called __________
  1.    Plasticity
  2.    Elasticity
  3.    Ductility
  4.    Malleability
 Discuss Question
Answer: Option B. -> Elasticity
Answer: (b).Elasticity
Question 84. Find the strain of a brass rod of length 100mm which is subjected to a tensile load of 50kN when the extension of rod is equal to 0.1mm?
  1.    0.01
  2.    0.001
  3.    0.05
  4.    0.005
 Discuss Question
Answer: Option B. -> 0.001
Answer: (b).0.001
Question 85. The property of a material by which it can be beaten or rolled into thin plates is called __________
  1.    Malleability
  2.    Plasticity
  3.    Ductility
  4.    Elasticity
 Discuss Question
Answer: Option A. -> Malleability
Answer: (a).Malleability
Question 86. What is Hooke’s law for the 1-D system?
  1.    The relation between normal stress and the corresponding strain
  2.    The relation between shear stress and the corresponding strain
  3.    The relation between lateral strain and the corresponding stress
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> The relation between normal stress and the corresponding strain
Answer: (a).The relation between normal stress and the corresponding strain
Question 87. Where in the stress-strain curve, the hooke’s law is valid?
  1.    Strain hardening region
  2.    Necking region
  3.    Elastic range
  4.    Valid everywhere
 Discuss Question
Answer: Option C. -> Elastic range
Answer: (c).Elastic range
Question 88. Limit of proportionality depends upon ____________
  1.    Area of cross-section
  2.    Type of loading
  3.    Type of material
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Area of cross-section
Answer: (a).Area of cross-section
Question 89. Which of these is a non-hoookean material?
  1.    Steel
  2.    Rubber
  3.    Aluminium
  4.    Copper
 Discuss Question
Answer: Option B. -> Rubber
Answer: (b).Rubber
Question 90. The stress at which extension of a material takes place more quickly as compared to the increase in load is called ____________
  1.    Elastic point
  2.    Plastic point
  3.    Breaking point
  4.    Yielding point
 Discuss Question
Answer: Option D. -> Yielding point
Answer: (d).Yielding point

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