Theory of Machine
In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, this method will

Cause withdrawing or throttling of steam
Reduce maximum opening of port to steam
All of the listed here
Reduce length of effective stroke of piston

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

Along the centripetal acceleration
Along perpendicular to angular velocity
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

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