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Theory of Machine

Theory of Machine
The velocity of a body moving with simple harmonic motion is __________ at the mean position.

Maximum
None of these
Zero
Minimum

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Theory of Machine
When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

Compound pendulum
Torsional pendulum
Simple pendulum
Second's pendulum

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Theory of Machine
A ball and a socket forms a

Screw pair
Spherical pair
Rolling pair
Turning pair

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Theory of Machine
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Greater than
Equal to
None of these
Less than

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r² + R²) cosφ]/2
[(r + R) sinφ]/2
[(r + R) cosφ]/2
[(r² + R²) sinφ]/2

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Theory of Machine
A mechanism consisting of four links is called a __________ mechanism.

Simple
Binary
None of these
Compound

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