The Fig. shows the arrangement of wheels in a compound epicyclic gear train. The sun wheel S is integral with the annular wheel A. The two arms are also integral with each other. The number of teeth on the wheels are as follows: S-24, A-96, S-30, A = 90 1. If the shaft P rotates at 1980 r.p.m., find the speed of the shaft Q, when A is fixed 2. At what speed does Q rotate, when A instead of being fixed, rotates at 198 r.p.m., in the same direction as S which is rotating at 1980 r.p.m.? . P P S A A P S