7. Figure 5 shows an epicyclic gear train with the following details:
A has 40 teeth external (fixed gear); B has 80 teeth internal; C-D is a compound wheel having 20
and 50 teeth (external) respectively, E-F is a compound wheel having 20 and 40 teeth (external)
respectively and G has 90 teeth (external). The arm runs at 100 rpm in clockwise direction.
Determine the speed for gears C, E, and B.
[ Ans. 300 rpm. clockwise; 400 anticlockwise; 150 rpm. clockwise]