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Theory of Machine

Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

10
34
20
30

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Theory of Machine
A circular bar moving in a round hole is an example of

Partially constrained motion
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion

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

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Theory of Machine
A rigid body possesses ________degrees of freedom

Four
Two
One
Six

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Theory of Machine
In a spring controlled governor, when the controlling force ____ as the radius of rotation increases, it is said to be a stable governor.

Increases
None of the listed here
Decreases
Remains constant

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Theory of Machine
Throw of a cam is the maximum distance of the follower from

Pitch circle
Prime circle
Root circle
Base circle

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