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MCQs

Total Questions : 98 | Page 8 of 10 pages
Question 71. Does the value of stress in each section of a composite bar is constant or not?
  1.    It changes in a relationship with the other sections as well
  2.    It changes with the total average length
  3.    It is constant for every bar
  4.    It is different in every bar in relation with the load applied and the cross sectional area
 Discuss Question
Answer: Option D. -> It is different in every bar in relation with the load applied and the cross sectional area
Answer: (d).It is different in every bar in relation with the load applied and the cross sectional area
Question 72. Identify which factor may cause a lowered body temperature:
  1.    Infection
  2.    Stress
  3.    Shock
  4.    Exercise
 Discuss Question
Answer: Option C. -> Shock
Answer: (c).Shock
Question 73. If a bar of two different length are in a line and P load is acting axially on them then what will be the change in length of the bar if the radius of both different lengths is same?
  1.    P/E x (L₁ + L₂)
  2.    PA/E x (L₁ + L₂)
  3.    P/EA x (L₁ + L₂)
  4.    E/PA x (L₁ + L₂)
 Discuss Question
Answer: Option C. -> P/EA x (L₁ + L₂)
Answer: (c).P/EA x (L₁ + L₂)
Question 74. A bar having two sections of cross sectional area of 100mm² and 200mm² respectively. The length of both the sections is 200mm. What will be the total strain in the bar if it is subjected to axial force of 100kN and E = 10⁵ N/mm²?
  1.    0.010
  2.    0.015
  3.    0.020
  4.    0.030
 Discuss Question
Answer: Option B. -> 0.015
Answer: (b).0.015
Question 75. If a bar of sections of two different length and different diameters are in a line and P load is acting axially on them then what will be the change in length of the bar?
  1.    P/E x (L₁ + L₂)
  2.    P/E x (A₁/L₁ + A₂/ L₂)
  3.    P/E x (L₁/A₁ + L₂/A₂)
  4.    E/P x (L₁/A₁ + L₂/A₂)
 Discuss Question
Answer: Option C. -> P/E x (L₁/A₁ + L₂/A₂)
Answer: (c).P/E x (L₁/A₁ + L₂/A₂)
Question 76. A composite bar of two sections of each of length 100mm, 150mm. When force is applied, all the sections causes an elongation of 0.1mm. What will the resultant strain in the bar?
  1.    0.0016
  2.    0.00154
  3.    0.00256
  4.    0.0020
 Discuss Question
Answer: Option A. -> 0.0016
Answer: (a).0.0016
Question 77. If the given forces P₁, P₂, P₃, P₄ and P₅ which are co planar and concurrent are such that the force polygon does not close, then the system will
  1.    Be in equilibrium
  2.    Always reduce to a resultant force
  3.    Always reduce to a couple
  4.    Always be in equilibrium and will always reduce to a couple
 Discuss Question
Answer: Option B. -> Always reduce to a resultant force
Answer: (b).Always reduce to a resultant force
Question 78. A brass bar, having cross sectional area of 150mm², is subjected to axial force of 50kN. What will be the total strain of bar if E= 1.05 x 104 N/mm²?
  1.    0.062mm
  2.    0.025mm
  3.    0.068mm
  4.    0.054mm
 Discuss Question
Answer: Option D. -> 0.054mm
Answer: (d).0.054mm
Question 79. The stress which acts in a direction perpendicular to the area is called ____________
  1.    Shear stress
  2.    Normal stress
  3.    Thermal stress
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Normal stress
Answer: (b).Normal stress
Question 80. Which type of stress does in a reinforcement bar is taken by the concrete?
  1.    Tensile stress
  2.    Compressive stress
  3.    Shear stress
  4.    Bending stress
 Discuss Question
Answer: Option B. -> Compressive stress
Answer: (b).Compressive stress

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