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Theory of Machine

Theory of Machine
In a shaper mechanism, the Coriolis component of acceleration will

Exist
Not exist
None of these
Depend on position of crank

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Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Are in phase
Leads by 90°
Lags by 90°
Leads by 180°

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

Elliptical trammel
Rotary engine
Beam engine
Oldham’s coupling

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
ω². (r₁ + r₂). (1 + cos² θ)

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Theory of Machine
The two elements of a pair are said to form a _________ when they permit relative motion between them.

None of these
Open pair
Kinematic pair
Sliding 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 cos β
μ₁ = μ/sin β
μ₁ = μ/cos β
μ₁ = μ sin β

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