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Theory of Machine

Theory of Machine
In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is

0°
90°
270°
180°

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Theory of Machine
The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove)

cosecβ
sinβ
secβ
cosβ

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Theory of Machine
In a gear having involute teeth, the normal to the involute is a tangent to the

Base circle
Pitch circle
Addendum circle
Dedendum circle

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Theory of Machine
The arrangement is called bevel gearing, when two __________ are connected by gears.

Parallel and coplanar shafts
Parallel and non-coplanar shafts
Intersecting and coplanar shafts
Non-intersecting and non-coplanar shafts

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

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

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

Same
None of these
Less
More

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