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MCQs

Total Questions : 2607 | Page 72 of 261 pages
Question 711. The process extensively used for making bolts and nuts is
  1.    hot piercing
  2.    extrusion
  3.    cold peening
  4.    cold heading
 Discuss Question
Answer: Option D. -> cold heading
Answer: (d).cold heading
Question 712. The included angle for the acme thread is 29°.
  1.    True
  2.    False
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 713. A shaft coupling should
  1.    be easy to connect or disconnect
  2.    transmit full power of the shaft
  3.    hold the shafts in perfect alignment
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 714. A screw is said to be over hauling screw, if the
  1.    friction angle is less than helix angle
  2.    friction angle is more than helix angle
  3.    friction angle is equal to helix angle
  4.    efficiency of screw is 100%
 Discuss Question
Answer: Option A. -> friction angle is less than helix angle
Answer: (a).friction angle is less than helix angle
Question 715. Oldham coupling is used to connect two shafts
  1.    which are perfectly aligned
  2.    which are not in exact alignment
  3.    which have lateral misalignment
  4.    whose axes intersect at a small angle
 Discuss Question
Answer: Option C. -> which have lateral misalignment
Answer: (c).which have lateral misalignment
Question 716. Shaft coupling is used in machinery to
  1.    introduce mechanical flexibility
  2.    introduce protection against over loads
  3.    reduce the transmission of shock loads
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 717. 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 a 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
Answer: (d).make M/I constant throughout the length of the leaf
Question 718. The size of a cam depends upon
  1.    base circle
  2.    pitch circle
  3.    prime circle
  4.    pitch curve
 Discuss Question
Answer: Option A. -> base circle
Answer: (a).base circle
Question 719. 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
Answer: (d).retain deformation produced under load permanently
Question 720. When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the
  1.    initial tension
  2.    external load applied
  3.    sum of the initial tension and external load applied
  4.    initial tension or external load, whichever is greater
 Discuss Question
Answer: Option D. -> initial tension or external load, whichever is greater
Answer: (d).initial tension or external load, whichever is greater

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