Theory of Machine
Which of the following statement is correct as regard to the difference between a machine and a structure?

The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another
The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only
All of these
A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work

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Theory of Machine
The direction of Coriolis component of acceleration is the direction

Along the centripetal acceleration
Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
Along tangential acceleration
Along perpendicular to angular velocity

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Theory of Machine
Cam angle is defined as the angle

Through which, the cam rotates during the period in which the follower remains in the highest position
Of rotation of the cam for a definite displacement of the follower
During which the follower returns to its initial position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position

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