Lakshya Education MCQs

Question: The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
Options:
A. ω². (r₁ r₂). (1 - cos² θ)
B. ω². (r₁ + r₂). (1 + cos² θ)
C. ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
D. ω². (r₁ - r₂). (1 - sin² θ)
Answer: Option C

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More Questions on This Topic :

Question 1. The pressure angle of a cam depends upon
  1.     Offset between center lines of cam and follower
  2.     Lift of follower
  3.     Angle of ascent
  4.     All of the above
Answer: Option D
Question 2. The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by
  1.     ω² R cosθ
  2.     ω² (R - r₁) cosθ
  3.     ω² (R - r₁) sinθ
  4.     ω² r₁ sinθ
Answer: Option B
Question 3. The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
  1.     ω². (r₁ r₂). (1 - cos² θ)
  2.     ω². (r₁ + r₂). (1 + cos² θ)
  3.     ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
  4.     ω². (r₁ - r₂). (1 - sin² θ)
Answer: Option C
Question 4. Sense of tangential acceleration of a link
  1.     Is same as that of velocity
  2.     Is opposite to that of velocity
  3.     Could be either same or opposite to velocity
  4.     Is perpendicular to that of velocity
Answer: Option C
Question 5. When a point moves along a straight line, its acceleration will have
  1.     Radial component only
  2.     Tangential component only
  3.     Coriolis component only
  4.     Radial and tangential components both
Answer: Option B
Question 6. Idler pulley is used
  1.     For changing the direction of motion of the belt
  2.     For applying tension
  3.     For increasing velocity ratio
  4.     All of the above
Answer: Option B

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