MCQs

Total Questions : 2607 | Page 39 of 261 pages
Question 381. When the belt speed increases
  1.    Power transmitted increases
  2.    Power transmitted decreases
  3.    Power transmitted increases to a maximum value and then decreases
  4.    Power transmitted remains the same
 Discuss Question
Answer: Option C. -> Power transmitted increases to a maximum value and then decreases
Question 382. If a spring is cut down into two springs, the stiffness of cut springs will be
  1.    Half
  2.    Same
  3.    Double
  4.    None of the above
 Discuss Question
Answer: Option C. -> Double
Question 383. In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.
  1.    Intersecting
  2.    Non-intersecting and non-parallel
  3.    Intersecting and non-parallel
  4.    None of these
 Discuss Question
Answer: Option B. -> Non-intersecting and non-parallel
Question 384. In worm, gears, pitch lead angle is
  1.    Half the angle between two inclined faces in axial plane
  2.    The angle between the tangent to the pitch helix and the plane of rotation
  3.    The angle between the tangent to the pitch helix and an element of the cylinder
  4.    None of the above
 Discuss Question
Answer: Option B. -> The angle between the tangent to the pitch helix and the plane of rotation
Question 385. A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)
  1.    Less than 20d
  2.    Greater than 30d
  3.    Between 20d and 30d
  4.    Equal to inside diameter of pipe
 Discuss Question
Answer: Option C. -> Between 20d and 30d
Question 386. The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.
  1.    Equal to
  2.    Less than
  3.    More than
  4.    None of these
 Discuss Question
Answer: Option C. -> More than
Question 387. In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)
  1.    2 d
  2.    3 d
  3.    4 d
  4.    5 d
 Discuss Question
Answer: Option B. -> 3 d
Question 388. In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)
  1.    d + 17 mm
  2.    2d + 13 mm
  3.    2d + 20 mm
  4.    3.5 d
 Discuss Question
Answer: Option D. -> 3.5 d
Question 389. In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)
  1.    d + 17 mm
  2.    2d + 13 mm
  3.    2d + 20 mm
  4.    3.5d
 Discuss Question
Answer: Option B. -> 2d + 13 mm
Question 390. For a square key made of mild steel, the shear and crushing strength are related as
  1.    Shear strength is equal to crushing strength
  2.    Shear strength is greater than crushing strength
  3.    Shear strength is less than crushing strength
  4.    None of the above
 Discuss Question
Answer: Option A. -> Shear strength is equal to crushing strength

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