Agenerator is to be driven by a small pelton wheel with a head of 91.5m at inlet to the nozzle and discharge of 0.04m^3/s. the wheel rotates at 720rpm a n d the velocity coefficient of the nnozzle is 0.98. if the efficiency of the wheel (based on the energy available at entry to the nozzle) is 80 per cent and the ratio of bucket speed to jet speed is0.46, determine the wheel-to-.jet-di meter ratio at the centre-line of the buckets, and the speed of the wheel. what is the dimensionless power specific speed of the wheel?