A single jet Pelton wheel runs at 300 rpm under a head of 510m. The jet diameter is 200m its deflection inside the bucket is 1650 and its relative velocity is reduced by 15 % due to friction. Find (1) water horsepower (2) resultant force on the bucket (3) brake power if mechanical loses are 3% of power supplied and overall efficiency. Assume suitable values for velocity coefficient and speed ratio.