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Theory of Machine

Theory of Machine
Hart mechanism has

Eight links
Six links
Four links
Twelve links

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Theory of Machine
Which of the following is a spring controlled governor?

Wilson-Hartnell governor
Hartung governor
Hartnell governor
All of these

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Theory of Machine
A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents

Free vibration without damping
Free vibration with damping
Forced vibration with damping
Forced vibration without damping

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

(3/4) μ W R cosecα
(1/2) μ W R cosecα
(2/3) μ W R cosecα
μ W R cosecα

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Theory of Machine
The maximum or minimum value of the swaying couple is

± 2a (1 - c) m.ω².r
± c.m.ω².r
± a (1 - c) m.ω².r
± (a/√2) (1 - c) m.ω².r

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Theory of Machine
The stress induced in a body will be shear stress, when it is subjected to

Longitudinal vibrations
Transverse vibrations
Torsional vibrations
None of these

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