. 3. Air flows through an insulated circular pipe at a rate of 495 kg/minute. The pressure, temperature and Mach number of air at entrance to the pipe are 0.3 MPa, 27C and 0.15 respectively. The coefficient of friction for the pipe is assumed constant and its value is 0.005. If the Mach number at exit is 0.5, determine: The diameter of the pipe ii. The length of pipe iii. Pressure and temperature of air at the exit of pipe iv. Stagnation pressure loss