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Theory of Machine

Theory of Machine
The lower pairs are _________ pairs.

Self-closed
Force-closed
Friction closed
None of these

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Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

Steam lap
Lead
Exhaust lap
None of these

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Theory of Machine
Which of the following is a lower pair?

Ball and socket i
Both (A) and (B) above
Cam and follower
Piston and cylinder

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Theory of Machine
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

ω √(r² - x²)
ω² √(r² - x²)
ω √(x² - r²)
ω² √(x² - r²)

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Theory of Machine
The motion of a shaft in a circular hole is an example of

Completely constrained motion
Successfully constrained motion
Incompletely constrained motion
None of these

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Theory of Machine
The size of cam depends upon

Pitch curve
Pitch circle
Base circle
Prime circle

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