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MCQs

Total Questions : 2607 | Page 80 of 261 pages
Question 791. A cotter joint is used to connect two __________ rods.
  1.    co-axial
  2.    perpendicular
  3.    parallel
  4.    None of these
 Discuss Question
Answer: Option A. -> co-axial
Answer: (a).co-axial
Question 792. The product of the diametral pitch and circular pitch is equal to
  1.    1
  2.    1/π
  3.    π
  4.    π x number of teeth
 Discuss Question
Answer: Option C. -> π
Answer: (c).π
Question 793. The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.
  1.    one-fourth
  2.    one-third
  3.    one-half
  4.    double
 Discuss Question
Answer: Option B. -> one-third
Answer: (b).one-third
Question 794. According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than
  1.    d
  2.    1.5 d
  3.    2 d
  4.    2.5 d
 Discuss Question
Answer: Option C. -> 2 d
Answer: (c).2 d
Question 795. The pitch diameter is the __________ diameter of an external or internal screw thread.
  1.    effective
  2.    smallest
  3.    largest
  4.    None of these
 Discuss Question
Answer: Option A. -> effective
Answer: (a).effective
Question 796. The springs mostly used in machinery have spring index less than 3.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> Incorrect
Answer: (b).Incorrect
Question 797. 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.    x d2τu
  4.    x d2 x tτu
 Discuss Question
Answer: Option B. -> πd.t.τu
Answer: (b).πd.t.τu
Question 798. A plate with a circular hole in the centre is subjected to a pull of P. The maximum stress induced at the edge of the hole is three times of the nominal stress.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct
Question 799. The cold working of metals is carried out __________ the recrystallisation temperature.
  1.    above
  2.    below
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> below
Answer: (b).below
Question 800. When percentage of carbon in steel is increased, the ductility of steel decreases.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct

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