Question: In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. this is done
A. Because of difficulty in manufacturing cam profile
B. Because of loose contact of follower with cam surface
C. In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
D. Because the uniform velocity motion is a partial parabolic motion
Answer: Option C

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More Questions on This Topic :

Question 1. The hooke's joint consists of:
  1.     Two forks
  2.     One fork
  3.     Three forks
  4.     Four forks
Answer: Option A
Question 2. A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 n/mm. the critical damping coefficient of this system is
  1.     1.4 N-s/m
  2.     18.52 N-s/m
  3.     52.92 N-s/m
  4.     529.2 N-s/m
Answer: Option C
Question 3. The relation between the controlling force (fc) and radius of rotation (r) for a stable spring controlled governor is
  1.     Fc = ar + b
  2.     Fc = ar - b
  3.     Fc = ar
  4.     Fc = a/r + b
Answer: Option B
Question 4. The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = displacement of the particle from mean position)
  1.     ω √(x² - r²)
  2.     ω √(r² - x²)
  3.     ω² √(x² - r²)
  4.     ω² √(r² - x²)
Answer: Option B
Question 5. The maximum value of the pressure angle in case of cam is kept as
  1.     10°
  2.     14°
  3.     20°
  4.     30°
Answer: Option D
Question 6. A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. the two gears are connected by an arm. the number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is
  1.     2
  2.     3
  3.     4
  4.     5
Answer: Option C

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