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Theory of Machine

Theory of Machine
A slider crank chain consists of following numbers of turning and sliding pairs

2, 2
3, 1
4, 0
1, 3

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Theory of Machine
Which of the following is an example of a higher pair?

All of the listed here
Belt and rope drive
Ball and roller bearing
Toothed gearing

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Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Angular velocity of journal
Clearance between journal and bearing
Magnitude of the forces on journal
Radius of journal

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
ω². (r₁ + r₂). (1 + cos² θ)

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Theory of Machine
Klein's construction is useful to determine

Displacement of various parts
Acceleration of various parts
Angular acceleration of various parts
Velocity of various parts

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Theory of Machine
The cam and follower is an example of

Rolling pair
Sliding pair
Higher pair
Lower pair

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