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Theory of Machine

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

2ωv²
2ωv
ω²v
ωv

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Theory of Machine
At the nodal point in a shaft, the amplitude for torsional vibration will be

Maximum
Minimum
Zero
Infinity

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Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

tanα = c/2b
cosα = c/b
sinα = b/c
cotα = c/2b

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Both linear and angular acceleration
Only angular acceleration
No acceleration
Only linear acceleration

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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/sin β
μ₁ = μ/cos β
μ₁ = μ cos β

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Theory of Machine
A Porter governor is a

Spring loaded governor
Dead weight governor
Inertia governor
Pendulum type governor

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