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Hydraulic Machines Practice Test: Pelton Turbine
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Pelton Turbine topics include: Pelton turbine velocity diagrams, pelton turbines work, pelton turbine efficiency and pelton wheel design. A Pelton turbine is a type of hydroelectric turbine that converts water's kinetic energy into mechanical energy. Lester A. Pelton invented it in 1880 during the gold rush.  Pelton turbines are used in hydroelectric plants to generate electricity. They are suitable for sites with heads greater than 300 meters and when water energy is available at high head and low flow rate.  Pelton turbines are characterized by their spoon-shaped buckets that capture the... Show more
Hydraulic Machines Practice Test: Pelton Turbine
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25 Questions

1. The depth of buckets of Pelton wheel ____________
2. In Pelton turbine the ratio of volume available at shaft of turbine and power supplied at the inlet of the turbine is _______
3. In Pelton turbine hydraulic efficiency is product of mechanical efficiency and overall efficiency.
4. If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.
5. Calculate work done by jet per second on the runner where, discharge=0.7cubic meters/s, inlet and outlet whirl velocities be 23.77 and 2.94?
6. Velocity triangles are used to analyze ____________
7. Find the diameter of jet D, if jet ratio m and diameter of jet d are given as 10 and 125mm.
8. The expression for water power in Pelton wheel is ________________
9. In which of following turbine inlet and outlet blade velocities of vanes are equal?
10. In Pelton wheel, relative inlet velocity of jet with respect to velocity of vane is _____________
11. The width of Pelton wheel should be 5 times the diameter of jet?
12. The maximum efficiency of Pelton turbine is _________
13. Kinetic energy of jet at inlet of turbine is given as __________________
14. If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate number of buckets on Pelton wheel approximately
15. The hydraulic efficiency of Pelton turbine will be maximum when blade velocity is equal to _______
16. The value of coefficient of velocity is _____________
17. In Pelton turbines the expression for power delivered at inlet to runner is given by __________
18. Among the following which turbine has least efficiency?
19. Tangential velocity of blade of Pelton wheel is proportional to ____________
20. Design of Pelton wheel means the following data is to be determined.
21. In Pelton turbine inlet velocity of jet is 85.83m/s, inlet and outlet whirl velocities be 85.83 and 0.143 and blade velocity be 38.62 then its hydraulic efficiency is ___________
22. ____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.
23. The work done per unit weight of water jet striking runner blades of Pelton turbine is given by expression ______________
24. In Pelton wheel, if outlet velocity angle of jet is “right angled” then outlet whirl velocity of jet is __________
25. The width of buckets of Pelton wheel is _________________