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GATE 2020: Theory of Machine Quiz 5

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Question 1

Which among the following is not a rotating cam-translating follower?

Question 2

Consider a rotating disk cam and a translating roller follower with zero offset. Which one of the following pitch curves, parameterized by t, lying in the interval 0 to 2 π, is associated with the maximum translation of the follower during one full rotation of the cam rotating about the center at (x,y) = (0,0)?

Question 3

For SHM motion of cam & follower, the maximum velocity of the follower is, where , h= rise of follower, = angle turned by crank, ф= crank rotation for maximum follower displacement.

Question 4

In a cam design, the rise motion is given by a simple harmonic motion (SHM) where h is total rise, θ is camshaft angle, β is the total angle of the rise interval. The jerk is given by

Question 5

For a cam having simple motion described as simple harmonic motion having ascent-dwell1-descent-dwell2 nature, if the angle for ascent is 65 angle for descent is 85 and dwell1 is 50 find the angle for dwell2 in degree.

Question 6

A constant velocity follower is having a cam profile rotating with a velocity of 40 rad/s. the lift of the cam is 80 mm. and there is no dwell between the ascent and descent of the cam. Find the velocity of the follower at the mid stroke during descent in m/s.( angle of descent is 120)
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