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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

0.5
2
1.5
1

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Theory of Machine
In a radial cam, the follower moves

In any direction irrespective of the cam axis
Along the cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis

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Theory of Machine
The Ackermann steering mechanism is preferred to the Davis type in automobiles because

The former is having turning pair
The former is mathematically accurate
The former is most economical
The former is most rigid

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Theory of Machine
Transmission of power from the engine to the rear axle of an automobile is by means of

Crown gear
Worm and wheel method
Compound gears
Hooke's joint

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r tanφ
(r/2) cosφ
r sinφ
r cosφ

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Theory of Machine
When the particles of a body moves perpendicular to its axis, then the body is said to have

Torsional vibration
None of these
Transverse vibration
Longitudinal vibration

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