Answering anyone of the question is fine

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11. Figure P5.11 shows two alternative diagrams for a high-pressure-ratio, high-hub-tip-ratio, single-stage axial air compressor. Give two advantages of each diagram relative to the other. (Both have equal blade velocity and equal enthalpy rise.) STATOR ROTOR STATOR ROTOR Figure P5.11
10. Find the flow coefficient that would be required if an axial-compressor stage of 50-percent reaction must have a theoretical pressure-rise coefficient no greater than 0.5. The work coefficient, &c Aho/u>, is to be 1.0.
7. Sketch the velocity diagrams for the constant-axial-velocity, constant-peripheral-velocity tur- bine and compressor (axial) stages listed in table P5.7. Also sketch in the approximate shapes of the stator and rotor blades. Fill in the missing numbers in table P5.7. ACL تد۵ م W2 W C3 Wy o as STATOR ROTOR STATOR ROTOR Figure P5.7 Table P5.7 R an da dy W2/W Turbine (T) or Compressor (C) Diagram т T T 0% 70° 60 20 50% 70 0 0 0° 0.3 50% 20 0° -0.5 -0.5 0.75 с 70 0°
3. Identify apparently desirable and undesirable features and sketch the approximate rotor and stator configurations of the velocity diagrams in figure P5.3. The following sketch is given as an example of what is wanted: Star FORO! Example diagram P5.3 Desirable features are (W../ww) acceptable rotor and stator. Undesirable features are high swirl velocity after both rotor and stator, high relative velocity into stator might lead to high-Mach-number problems. 254 Ch. 5. Energy transfer in turbomachines (a) Axial turbine (b) Axial compressor us (C) Axial turbine (d) Radial compressor Figure P5.3