# Cam and Follower Quiz | Cam and Follower Objective Type Questions and Answers

Questions
21 The pressure angle of a cam depends upon
A angle of ascent
B lift of follower
C offset between centre lines of cam and follower
D all of the mentioned

22 Angle of ascent of cam is defined as the angle
A through which the cam rotates during the period in which the follower remains in highest position
B moved by the cam from the instant the follower begins to rise, till it reaches its highest position
C during which the follower returns to its initial position
D of rotation of the cam for a definite displacement of the follower

Answer: moved by the cam from the instant the follower begins to rise, till it reaches its highest position
23 Cam size depends upon
A outer circle
B pitch circle
C base circle
D prime circle

24 The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by
A ω2×OQtanθ
B ω2×OQ
C ω2×OQsinθ
D ω2×OQcosθ

25 The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by
A (R-r1)(1-cosθ)
B R(1-sinθ)
C R(1-cosθ)
D (R-r1)(1-sinθ)

26 The linear velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
A ωr1+r2)sinθsec2θ
B ω(r1+r2)cosθcosec2θ
C ω(r1-r2)sinθ
D ω(r1-r2)cosθ

27 Which of the following displacement diagrams should be chosen for better dynamic performance of a cam-follower mechanism ?
A cycloidal motion
B parabolic motion
C simple hormonic motion
D none of the mentioned

28 For high speed engines, the cam follower should move with
A cycloidal motion
B uniform velocity
C uniform acceleration and retardation
D simple harmonic motion

29 For low and moderate speed engines, the cam follower should move with
A simple harmonic motion
B cycloidal motion
C uniform velocity
D uniform acceleration and retardation

30 Ofset is provided to a cam follower mechanism to
A avoid jerk
B accelerate
C minimise the side thrust
D None of the above

31 A radial follower is one
A that reciprocates in the guides
B that oscillates
C in which the follower translates along an axis passing through the cam centre of rotation.
D none of the mentioned

Answer: that reciprocates in the guides
32 The cam follower generally used in automobile engines is
A spherical faced follower
B roller follower
C knife edge follower
D flat faced follower