Answer / c.s

4 rotation

Answer / jayaraj

(np-na/ns-na)=-(zs/zp)
(np-na/0-na)=-(100/25)(assume sun gear to be fixed)
[(-np/na)+1]=-4
np/na=5
if na=1
then np=5
where
np=No of rotation of planet gear
ns=No of rotation of sun gear
na=rotation of arm,
zs and zp are number of teeth on sun and planet gears
respectively

Answer / asirraja

4 rotation

Answer / siddu

4 rotation,

Answer / palash

4+1=5

Answer / syam

4 times

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