An oil pump is drawing 29500 W of electric power while pumping oil with density 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 0.11 m and 0.15 m, respectively. If the pressure rise of oil in the pump is measured to be 253000 Pa and the motor efficiency is 90 percent, determine the mechanical efficiency of the pump. Take the kinetic energy correction factor to be 1.05.