60 to 80 r.p.m.

80 to 100 r.p.m.

100 to 200 r.p.m.

200 to 300 r.p.m.

length of pair of contact to the circular pitch

length of arc of contact to the circular pitch

length of arc of approach to the circular pitch

length of arc of recess to the circular pitch

Scott-Russell's mechanism

Hart's mechanism

Peaucellier's mechanism

all of these

increases

decreases

remains unaffected

first increases and then decreases

structure

mechanism

inversion

machine