Question: In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by
A.Decreasing the cross-section area of bar
B.Increasing the cross-section area of bar
C.Remain unaffected with cross-section area
D.Would depend upon other factors
Answer: Option A

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Question 1. A bolt of uniform strength can be developed by
  1.    Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
  2.    Keeping the core diameter smaller than the diameter of the unthreaded portion
  3.    Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
  4.    None of the above
Answer: Option A
Question 2. The shock absorbing capacity of a bolt can be increased by
  1.    Tightening it properly
  2.    Increasing shank diameter
  3.    Grinding the shank
  4.    Making shank diameter equal to core diameter of thread
Answer: Option D
Question 3. The power transmitted by the belt drive can be increased by
  1.    Increasing the initial tension in the belt
  2.    Dressing the belt to increase the coefficient of friction
  3.    Increasing wrap angle by using idler pulley
  4.    All of the above methods
Answer: Option D
Question 4. The cam follower generally used in automobile engines is
  1.    Knife edge follower
  2.    Flat faced follower
  3.    Spherical faced follower
  4.    Roller follower
Answer: Option C
Question 5. 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
Answer: Option A
Question 6. The ratio of endurance limit in shear to the endurance limit in flexure is
  1.    0.33
  2.    0.4
  3.    0.5
  4.    0.55
Answer: Option D

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