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MCQs

Total Questions : 2607 | Page 82 of 261 pages
Question 811. A parallel sunk key, made of steel, is equally strong in shearing and crushing.
  1.    Yes
  2.    No
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> No
Answer: (b).No
Question 812. In designing a key, it is assumed that the distribution of forces along the length of key
  1.    varies linearly
  2.    is uniform throughout
  3.    varies exponentially, being more at the torque-input end
  4.    varies exponentially, being less at the torque-input end
 Discuss Question
Answer: Option B. -> is uniform throughout
Answer: (b).is uniform throughout
Question 813. In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.
  1.    True
  2.    False
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 814. The bearing characteristic number in a hydrodynamic bearing depends upon
  1.    length, width and load
  2.    length, width and speed
  3.    viscosity, speed and load
  4.    viscosity, speed and bearing pressure
 Discuss Question
Answer: Option D. -> viscosity, speed and bearing pressure
Answer: (d).viscosity, speed and bearing pressure
Question 815. In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.
  1.    equal to
  2.    twice
  3.    three times
  4.    four times
 Discuss Question
Answer: Option D. -> four times
Answer: (d).four times
Question 816. The difference between the upper limit and lower limit of a dimension is called
  1.    nominal size
  2.    basic size
  3.    actual size
  4.    tolerance
 Discuss Question
Answer: Option D. -> tolerance
Answer: (d).tolerance
Question 817. A jam nut is a locking device in which
  1.    a thinner nut is tightened down over a thicker or main nut and the main nut is tightened against the thinner nut by loosening
  2.    a slot is cut in line with the centre of each face and a split pin passes through two slots in the nut and a hole in the bolt, so that a positive lock is obtained unless the pin shears
  3.    a slot is cut about half way through the nut and a small screw is tightened between the nut and the bolt in order to produce more friction
  4.    the bottom cylindrical portion is recessed to receive the tip of the locking set screw
 Discuss Question
Answer: Option A. -> a thinner nut is tightened down over a thicker or main nut and the main nut is tightened against the thinner nut by loosening
Answer: (a).a thinner nut is tightened down over a thicker or main nut and the main nut is tightened against the thinner nut by loosening
Question 818. A locking device extensively used in automobile industry is a
  1.    jam nut
  2.    castle nut
  3.    sawn nut
  4.    ring nut
 Discuss Question
Answer: Option B. -> castle nut
Answer: (b).castle nut
Question 819. A key way lowers
  1.    the strength of the shaft
  2.    the rigidity of the shaft
  3.    both the strength and rigidity of the shaft
  4.    the ductility of the shaft
 Discuss Question
Answer: Option C. -> both the strength and rigidity of the shaft
Answer: (c).both the strength and rigidity of the shaft
Question 820. A tapered key which fits in a key way in the hub and is flat on the shaft, is known as
  1.    feather key
  2.    gib-head key
  3.    wood ruff key
  4.    flat saddle key
 Discuss Question
Answer: Option D. -> flat saddle key
Answer: (d).flat saddle key

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