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Theory of Machine

Theory of Machine
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Dedendum
Working depth
Addendum
Clearance

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Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Clearance between journal and bearing
Radius of journal
Angular velocity of journal
Magnitude of the forces on journal

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Theory of Machine
The direction of linear velocity of any point on a link with respect to another point on the same link is

None of the listed here
At 45° to the link joining the points
Perpendicular to the link joining the points
Parallel to the link joining the points

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Theory of Machine
Typewriter constitutes

Mechanism
Machine
Inversion
Structure

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Theory of Machine
When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

Higher pair
Force-closed pair
Lower pair
Self-closed pair

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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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