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MCQs

Total Questions : 98 | Page 3 of 10 pages
Question 21. A composite bar have four sections each of length 100mm, 150mm, 200mm, 250mm. When force is applied, all the sections causes an elongation of 0.1mm. What will the resultant strain in the bar?
  1.    0.0012
  2.    0.00154
  3.    0.00256
  4.    0.0020
 Discuss Question
Answer: Option C. -> 0.00256
Answer: (c).0.00256
Question 22. A brass bar, having cross sectional area of 100mm², is subjected to axial force of 50kN. The length of two sections is 100mm and 200mm respectively. What will be the total elongation of bar if E = 1.05 x 10⁵ N/mm² ?
  1.    1.21mm
  2.    2.034mm
  3.    2.31mm
  4.    1.428mm
 Discuss Question
Answer: Option D. -> 1.428mm
Answer: (d).1.428mm
Question 23. A composite bar having two sections of cross-sectional area 100mm² and 200mm² respectively. The length of both the sections is 100mm. What will be the total elongation of bar if it is subjected to axial force of 100kN and E = 10⁵ N/mm²?
  1.    1.0
  2.    1.25
  3.    1.5
  4.    2.0
 Discuss Question
Answer: Option C. -> 1.5
Answer: (c).1.5
Question 24. Three sections in a beam are of equal length of 100mm. All three sections are pulled axially with 50kN and due to it elongated by 0.2mm. What will be the resultant strain in the beam?
  1.    0.002
  2.    0.004
  3.    0.006
  4.    0.020
 Discuss Question
Answer: Option C. -> 0.006
Answer: (c).0.006
Question 25. Two sections in a bar of length 10cm and 20cm respectively are pulled axially. It causes an elongation of 0.2mm and 0.4mm respectively in each section. What will be the resultant strain in the bar?
  1.    0.004
  2.    0.002
  3.    0.003
  4.    0.006
 Discuss Question
Answer: Option A. -> 0.004
Answer: (a).0.004
Question 26. A bar shown in diagram is subjected to load 160kN. If the stress in the middle portion Is limited to 150N/mm², what will be the diameter of the middle portion?A Bar Shown In Diagram Is Subjected To Load 160kN. If The St...
  1.    3.456 cm
  2.    3.685 cm
  3.    4.524 cm
  4.    4.124 cm
 Discuss Question
Answer: Option B. -> 3.685 cm
Answer: (b).3.685 cm
Question 27. A bar shown in the diagram below is subjected to load 160kN. If the stress in the middle portion Is limited to 150N/mm², what will be the length of the middle portion, if the total elongation of the bar is to be 0.2mm? Take E = 2.1 x 10⁵ N/mm².A Bar Shown In The Diagram Below Is Subjected To Load 160kN....
  1.    18.45cm
  2.    17.24cm
  3.    16.45cm
  4.    20.71cm
 Discuss Question
Answer: Option D. -> 20.71cm
Answer: (d).20.71cm
Question 28. A bar is subjected to a tensile load of 150kN. If the stress in the middle portion is limited to 160 N/mm², what will be the diameter of the middle portion of the total elongation of the bar is 0.25cm (E= 2 x 10⁵)?A Bar Is Subjected To A Tensile Load Of 150kN. If The Stress...
  1.    3cm
  2.    3.45cm
  3.    3.85cm
  4.    4cm
 Discuss Question
Answer: Option B. -> 3.45cm
Answer: (b).3.45cm
Question 29. A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. what will be the value of P necessary for equilibrium?A Member ABCD Is Subjected To Points Load P₁=45kN, P₂, P...
  1.    350kN
  2.    365kN
  3.    375kN
  4.    400kN
 Discuss Question
Answer: Option B. -> 365kN
Answer: (b).365kN
Question 30. A tensile rod of 40kN is acting on a rod of diameter 40mm and of length 4m. a bore of diameter 20mm is made centrally on the rod. To what length the rod should be bored so that the total extension will increase 30% under the same tensile load if E = 2×10⁵ N/mm²?A Tensile Rod Of 40kN Is Acting On A Rod Of Diameter 40mm An...
  1.    2m
  2.    2.7m
  3.    3.2m
  4.    3.6m
 Discuss Question
Answer: Option D. -> 3.6m
Answer: (d).3.6m

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