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RVUNL ME || Theory of Machines || Quiz 4
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Question 1
Match list I (terms) with list II (definition) and select the correct answer using the codes given below the lists:
List I
A) Base circle
B) Trace point
C) Pitch point
D) Prime circle
List II
I. Smallest circle that can be draw from the centre of cam and tangent to pitch curve
II. Smallest circle that can be draw from the centre of cam through the pitch points
III. Point on pitch curve having the maximum pressure angle
IV. Point on pitch curve having the minimum pressure angle
V. Smallest circle that can be draw to the cam profile
VI. Reference point on follower and used to generate pitch curve
Codes:
A B C D
List I
A) Base circle
B) Trace point
C) Pitch point
D) Prime circle
List II
I. Smallest circle that can be draw from the centre of cam and tangent to pitch curve
II. Smallest circle that can be draw from the centre of cam through the pitch points
III. Point on pitch curve having the maximum pressure angle
IV. Point on pitch curve having the minimum pressure angle
V. Smallest circle that can be draw to the cam profile
VI. Reference point on follower and used to generate pitch curve
Codes:
A B C D
Question 2
The cam moves with a 300rpm, and has a least radius of 5cm. If the cam lifts the follower through 3.75cm when the cam attends 90 degree rotation in SHM. Determine the max. velocity of the follower during descent.
Question 3
A high value of pressure angle is not desirable for a cam for which of the following reason_____?
Question 4
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
)
) Question 5
Which of the following type follower program is preferred for automobile applications ________?
Question 6
The equation of velocity of follower which is starting from rest and have a constant acceleration is given by:
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