Puzzle

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