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MCQs

Total Questions : 2607 | Page 3 of 261 pages
Question 21. The bending moment ‘m’ and a torque ‘t’ is applied on a solid circular shaft. if the maximum bending stress equals to maximum shear stress developed, then ‘m’ is equal to
  1.     T/2
  2.     1 T
  3.     2 T
  4.     4 T
 Discuss Question
Answer: Option A. ->  T/2
Question 22. The bending moment ‘m’ and a torque ‘t’ is applied on a solid circular shaft. if the maximum bending stress equals to maximum shear stress developed, then ‘m’ is equal to
  1.     T/2
  2.     1 T
  3.     2 T
  4.     4 T
 Discuss Question
Answer: Option A. ->  T/2
Question 23. Euler’s formula for a mild steel column is not valid if the slenderness ratio is
  1.     90
  2.     60
  3.     120
  4.     100
 Discuss Question
Answer: Option B. ->  60
Question 24. Euler’s formula for a mild steel column is not valid if the slenderness ratio is
  1.     90
  2.     60
  3.     120
  4.     100
 Discuss Question
Answer: Option B. ->  60
Question 25. The helix angle for single helical gears ranges from
  1.    10° to 15°
  2.    15° to 20°
  3.    20° to 35°
  4.    35° to 50°
 Discuss Question
Answer: Option C. -> 20° to 35°
Question 26. In thrust bearings, the load acts
  1.    Along the axis of rotation
  2.    Parallel to the axis of rotation
  3.    Perpendicular to the axis of rotation
  4.    In any direction
 Discuss Question
Answer: Option A. -> Along the axis of rotation
Question 27. The strap end of a connecting rod of steam engine is joined by
  1.    Gib of cotter joint
  2.    Sleeve and cotter joint
  3.    Spigot socket cotter joint
  4.    Knuckle joint
 Discuss Question
Answer: Option A. -> Gib of cotter joint
Question 28. For steel, the ultimate strength in shear as compared to ultimate strength in tension is
  1.    1/2
  2.    1/3
  3.    1/4
  4.    2/3
 Discuss Question
Answer: Option D. -> 2/3
Question 29. Failure of a material is called fatigue when it fails
  1.    At the elastic limit
  2.    Below the elastic limit
  3.    At the yield point
  4.    Below the yield point
 Discuss Question
Answer: Option D. -> Below the yield point
Question 30. The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to
  1.    Obtain variable moment of inertia (I) in each leaf
  2.    Permit each leaf to act as an overhanging beam
  3.    Have variable bending moment (M) in each leaf
  4.    Make M/I constant throughout the length of the leaf
 Discuss Question
Answer: Option D. -> Make M/I constant throughout the length of the leaf

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