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Theory of Machine

Theory of Machine
The size of cam depends upon

Pitch circle
Base circle
Pitch curve
Prime circle

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Theory of Machine
The danger of breakage and vibration is maximum

None of these
Above the critical speed
Near the critical speed
Below the critical speed

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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.

Both A and B
Perpendicular
None of these
Parallel

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Theory of Machine
Relationship between the number of links (L) and number of pairs (P) is

P = 2L + 4
P = 2L - 2
P = 2L - 4
P = 2L + 2

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Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

ω²v
2ωv²
2ωv
ωv

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

Slightly less than 95 mm
45 mm
Slightly more than 95 mm
95 mm

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