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Theory of Machine

Theory of Machine
In S.H.M., acceleration is proportional to

Velocity
Rate of change of velocity
All of these
Displacement

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Theory of Machine
In a ball bearing, ball and bearing forms a

Turning pair
Screw pair
Spherical pair
Rolling pair

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Theory of Machine
The Coriolis component of acceleration depends upon

Velocity of slider
Both (A) and (B)
None of these
Angular velocity of the link

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Theory of Machine
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

ω² r {n/(n - 1)}
ω² r {(n + 1)/n}
ω² r {n/(n + 1)}
ω² r {(n - 1)/n}

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Theory of Machine
Elements of pairs held together mechanically is known as

Mechanical pair
Open pair
Closed pair
Rolling pair

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

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