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Theory of Machine

Theory of Machine
The velocity of a body moving with simple harmonic motion is __________ at the mean position.

Maximum
None of these
Minimum
Zero

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Theory of Machine
A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism is

Not sound
Kinematically sound
Soundness would depend upon which link is kept fixed
Data is not sufficient to determine same

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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

5 links
3 links
4 links
2 links

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing)

½μWR
¾μWR
²/₃ μWR
μwr

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Theory of Machine
A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

4
5
3
2

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Theory of Machine
A kinematic chain requires at least

3 links and 4 turning pairs
4 links and 4 turning pairs
2 links and 3 turning pairs
5 links and 4 turning pairs

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