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MCQs

Total Questions : 2607 | Page 48 of 261 pages
Question 471. When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
  1.    Short bearing
  2.    Long bearing
  3.    Medium bearing
  4.    Square bearing
 Discuss Question
Answer: Option D. -> Square bearing
Question 472. Factor of safety for fatigue loading is the ratio of
  1.    Elastic limit to the working stress
  2.    Elastic limit to the yield point
  3.    Endurance limit to the working stress
  4.    Young's modulus to the ultimate tensile strength
 Discuss Question
Answer: Option C. -> Endurance limit to the working stress
Question 473. A bench vice has following type of threads
  1.    Metric
  2.    Square
  3.    Buttress
  4.    Acme
 Discuss Question
Answer: Option D. -> Acme
Question 474. Crowning on pulley helps
  1.    In decreasing the slip of the belt
  2.    In increasing the slip of the belt
  3.    To keep the belt in centre on a pulley while it is in motion
  4.    To increase pulley life
 Discuss Question
Answer: Option C. -> To keep the belt in centre on a pulley while it is in motion
Question 475. Applications in which stresses are encountered in one direction only uses following type of threads
  1.    Metric
  2.    Buttress
  3.    Acme
  4.    Square
 Discuss Question
Answer: Option B. -> Buttress
Question 476. According to Indian standard specifications, 100 H6/g5 means that the
  1.    Basic size is 100 mm
  2.    Actual size is 100 mm
  3.    Difference between the actual size and basic size is 100 mm
  4.    None of the above
 Discuss Question
Answer: Option A. -> Basic size is 100 mm
Question 477. The railway carriage couplings have
  1.    Square threads
  2.    Acme threads
  3.    Knuckle threads
  4.    Buttress threads
 Discuss Question
Answer: Option D. -> Buttress threads
Question 478. Gear box is used
  1.    To produce torque
  2.    For speed reduction
  3.    To obtain variable speeds
  4.    To increase efficiency of system
 Discuss Question
Answer: Option C. -> To obtain variable speeds
Question 479. The centre distance between two meshing involute gears is equal to
  1.    Sum of base circle radii/cosφ
  2.    Difference of base circle radii/cosφ
  3.    Sum of pitch circle radii/cosφ
  4.    Difference of pitch circle radii/cosφ
 Discuss Question
Answer: Option A. -> Sum of base circle radii/cosφ
Question 480. 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

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