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Theory of Machine

Theory of Machine
Davis steering gear consists of

Turning pairs
Rolling pairs
Sliding pairs
Higher pairs

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Theory of Machine
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be

0, 0
0, and more than co2r
cor, 0
0, and less than coV

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Theory of Machine
The Coriolis component of acceleration leads the sliding velocity by

180°
135°
90°
45°

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Theory of Machine
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

Inner edge
Corners
Outer edge
None of these

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Theory of Machine
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

1/2π
2π. √(q/I)
2π qI
(1/2π). √(q/I)

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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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