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Theory of Machine

Theory of Machine
A cam with a roller follower would constitute following type of pair

Close pair
Higher pair
Open pair
Lower pair

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Theory of Machine
Angular acceleration of a link can be determined by dividing the

Tangential component of acceleration with length of link
Resultant acceleration with length of link
All of these
Centripetal component of acceleration with length of link

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Theory of Machine
Which one of the following can completely balance several masses revolving in different planes on a shaft?

Two equal masses in any two planes
A single mass in one of the planes of the revolving masses
A single mass in different planes
Two masses in any two planes

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Theory of Machine
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

1/2π
(1/2π). √(q/I)
2π qI
2π. √(q/I)

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Theory of Machine
The pressure angle of a cam depends upon

Offset between center lines of cam and follower
Lift of follower
All of these
Angle of ascent

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Theory of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by

μ₁ = μ cos β
μ₁ = μ sin β
μ₁ = μ/cos β
μ₁ = μ/sin β

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