Theory of Machine
Angle of ascent of cam is defined as the angle

Through which the cam rotates during the period in which the follower remains in highest position
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
Of rotation of the cam for a definite displacement of the follower

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Theory of Machine
The inversion of a mechanism is

Changing of a higher pair to a lower pair
Obtained by fixing different links in a kinematic chain
Obtained by reversing the input and output motion
Turning its upside down

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Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

Efficiency of machines as well as structures is below 100 %
Machines modify movement and work, whereas structures modify forces
Machines transmit mechanical work, whereas structures transmit forces
In machines, relative motion exists between its members, whereas same does not exist in case of structures

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