91.
The direction of linear velocity of any point on a link with respect to another point on the same link is

92.
In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will

93.
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

94.
Higher pairs are those which have

95.
Kinematic pairs are those which have

96.
Lower pairs are those which have

97.
Open pairs are those which have

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