Turbines and Pumps

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Across
  1. 7. Cup-shaped blades mounted on the periphery of a Pelton wheel.
  2. 10. Centrifugal pump with multiple impellers on one shaft.
  3. 11. Gradually expanding pipe at a reaction turbine exit.
  4. 13. Device that converts pressure energy into a high-velocity jet in a Pelton wheel.
  5. 14. Tangential flow impulse turbine for high heads.
  6. 15. Large pipe conveying water from the reservoir to the turbine.
  7. 16. Inward radial flow reaction turbine for medium heads.
  8. 21. Lowest rotational speed needed for a pump to start delivering water.
  9. 22. Rotating part of a centrifugal pump with backward-curved vanes.
Down
  1. 1. Sealed pump-motor unit designed to operate completely underwater.
  2. 2. Constant-speed pump curves plotting head, power, and efficiency against discharge.
  3. 3. Spiral casing surrounding a centrifugal pump impeller.
  4. 4. Axial flow reaction turbine with adjustable vanes for low heads.
  5. 5. Turbine type using both pressure and kinetic energy at the inlet.
  6. 6. Impeller arrangement in a multistage pump used to deliver a very high discharge.
  7. 8. VANES Stationary or adjustable blades directing water smoothly onto a reaction turbine runner.
  8. 9. Rotating wheel of a turbine on which vanes or buckets are mounted.
  9. 12. Turbine type using only kinetic energy at the inlet.
  10. 17. Formation and collapse of vapor bubbles due to low pressure.
  11. 18. Impeller arrangement in a multistage pump used to produce a very high head.
  12. 19. Net positive suction head preventing cavitation.
  13. 20. Conical needle inside a nozzle used to regulate water flow in a Pelton wheel.
  14. 23. Filling the pump casing and suction pipe with liquid before starting.