1. A small air turbine is designed to work on air of 1 MPa and 40 °C to produce a power
output of 2.0 kW. The turbine, which may be assumed adiabatic with an isentropic efficiency
of 85%, discharges the air at a pressure of 100 kPa. If the exit velocity is 30 m/s, calculate
the diameter of the exit flow line