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Theory of Machine

Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n(n - 1)/2
n
n - 1
n/2

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Theory of Machine
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

Equal to
Greater than
None of these
Less than

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

Hartung governor
Wilson Hartnell governor
Inertia governor
Pickering governor

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Theory of Machine
The lower pair is a

Closed pair
Open pair
Sliding pair
Point contact pair

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Theory of Machine
A kinematic chain requires at least

2 links and 3 turning pairs
3 links and 4 turning pairs
4 links and 4 turning pairs
5 links and 4 turning pairs

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Theory of Machine
A spring controlled governor is said to be isochronous when the controlling force

Increases as the radius of rotation increases
Remain constant for all radii of rotation
Decreases as the radius of rotation increases
Increases as the radius of rotation decreases

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