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Total Questions : 2607 | Page 6 of 261 pages
Question 51. In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to
  1.    1 d
  2.    1.25 d
  3.    1.5 d
  4.    1.75 d
 Discuss Question
Answer: Option C. -> 1.5 d
Question 52. If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to
  1.    Diameter of bolt
  2.    0.75 × diameter of bolt
  3.    1.25 × diameter of bolt
  4.    1.5 × diameter of bolt
 Discuss Question
Answer: Option A. -> Diameter of bolt
Question 53. The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be
  1.    Same in both cases
  2.    2 times more
  3.    3 times more
  4.    4 times more
 Discuss Question
Answer: Option C. -> 3 times more
Question 54. The largest diameter of an external or internal screw thread is known as
  1.    Minor diameter
  2.    Major diameter
  3.    Pitch diameter
  4.    None of these
 Discuss Question
Answer: Option B. -> Major diameter
Question 55. The smallest diameter of an external or internal screw thread is known as
  1.    Minor diameter
  2.    Major diameter
  3.    Pitch diameter
  4.    None of these
 Discuss Question
Answer: Option A. -> Minor diameter
Question 56. When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate)
  1.    d.t.τu
  2.    πd.t.τu
  3.    π/4 × d².τu
  4.    π/4 × d² × tτu
 Discuss Question
Answer: Option B. -> πd.t.τu
Question 57. The algebraic difference between the maximum limit and the basic size is called
  1.    Lower deviation
  2.    Upper deviation
  3.    Actual deviation
  4.    Mean deviation
 Discuss Question
Answer: Option B. -> Upper deviation
Question 58. Which of the following spring is used in mechanical wrist watch?
  1.    Helical compression spring
  2.    Spiral spring
  3.    Torsion spring
  4.    Belleville spring
 Discuss Question
Answer: Option C. -> Torsion spring
Question 59. The elasticity is the property of a material which enables it to
  1.    Regains its original shape after deformation when the external forces are removed
  2.    Draw into wires by the application of a tensile force
  3.    Resists fracture due to high impact loads
  4.    Retain deformation produced under load permanently
 Discuss Question
Answer: Option A. -> Regains its original shape after deformation when the external forces are removed
Question 60. The plasticity is the property of a material which enables it to
  1.    Regain its original shape after deformation when the external forces are removed
  2.    Draw into wires by the application of a tensile force
  3.    Resist fracture due to high impact loads
  4.    Retain deformation produced under load permanently
 Discuss Question
Answer: Option D. -> Retain deformation produced under load permanently

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