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Theory of Machine

Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

34
30
20
10

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Theory of Machine
The lead screw of a lathe with nut forms a

Turning pair
Rolling pair
Screw pair
Sliding pair

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Theory of Machine
In its simplest form, a cam mechanism consists of following number of links

4
3
1
2

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

2πk/r. √(g/l)
r/2πk. √(l/g)
2πr/k. √(g/l)
r/2πk. √(g/l)

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Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Addendum
Working depth
Clearance
Dedendum

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Theory of Machine
The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

Parallel to each other
Perpendicular to each other
Inclined at 45°
Opposite to each other

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