An electric motor drives a pump, which moves a liquid fluorocarbon from a pipe with an inlet diameter of 13[cm] into a pipe with an outlet diameter of [8cm] at a rate of 0.15[m3/s]. The motor uses 200[kW] of electric power. The specific volume of the fluorocarbon is 0.0012 [m3/kg]. The pressure rise across the pump is 510 [kPa]. The motor efficiency is 83%. Determine the mechanical efficiency of the pump?