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Theory of Machine

Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Lags by 90°
Leads by 180°
Are in phase
Leads by 90°

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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

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

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Theory of Machine
If the pressure angle is __________, a reciprocating follower will jam in its bearings.

Too small
Small
Too large
Large

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Theory of Machine
Cylindrical cams can be classified as

None of these
Circular
Tangent
Reciprocating

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Theory of Machine
An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has

4 links
5 links
3 links
2 links

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Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

At the origin
Below the origin
Any one of these
Above the origin

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