Puzzle

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Across
  1. 3. work producing device
  2. 5. increasing turbine work
  3. 9. less than vapour pressure
  4. 12. piston used
  5. 14. velocity is zero
  6. 15. increasing kinetic energy
Down
  1. 1. steam turbine used
  2. 2. increase efficiency
  3. 4. entropy constant
  4. 6. right angle
  5. 7. due to surging
  6. 8. use for liquid
  7. 10. do not have aerofoil blades
  8. 11. net positive suction head
  9. 13. attack is larger than design angle