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Theory of Machine

Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

Involute
A straight line
Cycloidal
A circle

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Theory of Machine
When two links are connected by a pin joint, their instantaneous center lies

At the center of curvature
On their point of contact
At the center of circle
At the pin joint

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Theory of Machine
The periodic time of one oscillation for a simple pendulum is

2π. √(l/g)
(1/2π). √(g/l)
2π. √(g/l)
(1/2π). √(l/g)

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Theory of Machine
The secondary unbalanced force is __________ the primary unbalanced force.

1/n times
One-half
n times
Two-third

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Theory of Machine
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

Maximum and zero
Minimum and maximum
Zero and maximum
Zero and minimum

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Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

sinα = b/c
cosα = c/b
cotα = c/2b
tanα = c/2b

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