second inversion of double slider crank chain
third inversion of double slider crank chain
second inversion of single slider crank chain
third inversion of slider crank chain
is same as that of velocity
is opposite to that of velocity
could be either same or opposite to velocity
is perpendicular to that of velocity
two links
three links
four links or more than four links
all of the above
2
3
4
5
closed pair
open pair
mechanical pair
rolling pair