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Theory of Machine

Theory of Machine
A mechanism is an assemblage of

Two links
Three links
Four or more than four links
All of these

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Theory of Machine
The frequency of oscillation of a compound pendulum is

2π. √[(kG² + h²)/gh]
(1/2π). √[(kG² + h²)/gh]
2π. √[gh/(kG² + h²)]
(1/2π). √[gh/(kG² + h²)]

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Theory of Machine
In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed

Wilson Hartnell governor
Pickering governor
Inertia governor
Hartung governor

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Theory of Machine
Tangential acceleration direction is

Opposite to angular velocity
May be any one of these
Along the angular velocity
Perpendicular to angular velocity

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Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosecφ
sinφ
cosφ
secφ

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Theory of Machine
The number of links and instantaneous centers in a reciprocating engine mechanism are

4, 5
4, 4
5, 4
4, 6

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