11.3 A compressor has an air mass flow rate of 180 kg/s. The fuel flow rate in the burner is 6 kg/s. The flow areas are A₁ = 1 m², A3 = 0.14 m². Compressor total pressure ratio is 11 and e₁ = 0.9. The fuel heating value is QR = 42,000 kJ/kg, burner efficiency and total pressure ratio are n₁ = 0.99 and л=0.95, respectively. mo 2 3 4 A4 ω=2πΝ m₁ ■FIGURE P11.3 Assuming M22 = 0.5, T₁₂ = 300 K and M24 = 1.0, Calculate (a) T4/T12 (b) P14/P12 (c) A4 in m²