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MCQs

Total Questions : 2607 | Page 74 of 261 pages
Question 731. The maximum bending stress in a curved beam having symmetrical section always occur at the
  1.    centroidal axis
  2.    neutral axis
  3.    inside fibre
  4.    outside fibre
 Discuss Question
Answer: Option C. -> inside fibre
Answer: (c).inside fibre
Question 732. In radial bearings, the load acts __________ to the axis of rotation.
  1.    parallel
  2.    perpendicular
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> perpendicular
Answer: (b).perpendicular
Question 733. When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be
  1.    4F/ πd²
  2.    6F/ πd²
  3.    8F/ πd²
  4.    16F/ 3πd²
 Discuss Question
Answer: Option D. -> 16F/ 3πd²
Answer: (d).16F/ 3πd²
Question 734. The draw of cotter should not be more than
  1.    3 mm
  2.    6 mm
  3.    8 mm
  4.    12 mm
 Discuss Question
Answer: Option A. -> 3 mm
Answer: (a).3 mm
Question 735. The bolts of smaller diameter than M16 are not permitted in making fluid tight joints.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct
Question 736. Which of the following statement is wrong ?
  1.    The solid length of a spring is the product of total number of coils and the diameter of the wire
  2.    The spring index is the ratio of mean diameter of the coil to the diameter of the wire
  3.    The spring stiffness is the load required per unit deflection of the spring
  4.    The pitch of the coil is the axial distance between adjacent coils in the compressed state
 Discuss Question
Answer: Option D. -> The pitch of the coil is the axial distance between adjacent coils in the compressed state
Answer: (d).The pitch of the coil is the axial distance between adjacent coils in the compressed state
Question 737. In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to
  1.    increase the key length
  2.    increase the key depth
  3.    increase the key width
  4.    decrease the key length
 Discuss Question
Answer: Option A. -> increase the key length
Answer: (a).increase the key length
Question 738. Creep in belt is due to
  1.    material of the belt
  2.    material of the pulley
  3.    uneven extensions and contractions due to varying tension
  4.    all of the above
 Discuss Question
Answer: Option C. -> uneven extensions and contractions due to varying tension
Answer: (c).uneven extensions and contractions due to varying tension
Question 739. In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.
  1.    larger than
  2.    smaller than
  3.    equal to
  4.    None of these
 Discuss Question
Answer: Option B. -> smaller than
Answer: (b).smaller than
Question 740. The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be
  1.    12
  2.    14
  3.    18
  4.    24
 Discuss Question
Answer: Option C. -> 18
Answer: (c).18

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