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Theory of Machine

Theory of Machine
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

2
1.5
0.5
1

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Theory of Machine
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

To start the locomotive quickly
Minimize the effect of secondary forces
Have perfect balancing
Minimize the effect of primary forces

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Theory of Machine
A watt's governor can work satisfactorily at speeds from

80 to 100 r.p.m.
100 to 200 r.p.m.
60 to 80 r.p.m.
200 to 300 r.p.m.

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Theory of Machine
A mechanism is an assemblage of

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

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Theory of Machine
Which gear is used for connecting two coplanar and intersecting shafts?

None of these
Helical gear
Spur gear
Bevel gear

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Theory of Machine
Which type of gear train is used in clock mechanism to join hour hand and minute hand?

Compound gear train
Epicyclic gear train
Simple gear train
Reverted gear train

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