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Theory of Machine

Theory of Machine
A cam mechanism imparts following motion

Rotating
Oscillating
All of these
Reciprocating

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Theory of Machine
The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω² R cosθ
ω² r₁ sinθ
ω² (R - r₁) cosθ
ω² (R - r₁) sinθ

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Theory of Machine
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

Isochronous
Unstable
Stable
None of these

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

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

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Theory of Machine
The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is

Less than 2
Equal to 2
Greater than 2
Equal to 1

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Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

W CE / CS
W CE / 2CS
W CS / 2CE
2 W CE / CS

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