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Theory of Machine

Theory of Machine
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

0.5
1.5
2
1

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Theory of Machine
Which of the following is an inversion of Single slider crank chain?

Rotary engine
Oldham’s coupling
Beam engine
Elliptical trammel

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Theory of Machine
The example of rolling pair is

Lead screw of a lathe
Ball bearing and roller bearing
Ball and socket joint
Bolt and nut

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Theory of Machine
The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

Parallel
None of these
Both A and B
Perpendicular

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Theory of Machine
An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has

3 links
2 links
4 links
5 links

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Theory of Machine
The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ωr₁ sinθ
ω(R - r₁) sinθ
ω(R - r₁) cosθ
ωR cosθ

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