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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 ratio of diameter of jet to diameter of runner is _____________
2. ____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.
3. In Pelton turbine the energy available at inlet of runner that is at outlet of nozzle is known as
4. If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.
5. In Pelton wheel, if outlet velocity angle of jet is “acute angled” then outlet whirl velocity of jet is ______________
6. The width of buckets of Pelton wheel is _________________
7. If diameter of jet is 85mm and diameter of runner is 1.5 meter then depth of buckets is ___________
8. The ratio of pitch diameter of Pelton wheel to diameter of jet is known as ___________
9. In the expression for overall efficiency of turbine, which is p/ (k*g*q*h), where “k” is known as _______
10. In Pelton turbine product of mechanical efficiency and hydraulic efficiency is known as _____________
11. The expression for hydraulic efficiency is given by
12. In which of following turbine inlet whirl velocity and inlet jet velocity are equal in magnitude?
13. Kinetic energy of jet at inlet of turbine is given as __________________
14. The power supplied at inlet of turbine in S.I units is known as_____________
15. The number of buckets of Pelton wheel is 25 and diameter of runner is 1.5meters then calculate diameter of jet is ___________
16. Tangential velocity of blade of Pelton wheel is proportional to ____________
17. Among the following which turbine has least efficiency?
18. In Pelton wheel, relative inlet velocity of jet with respect to velocity of vane is _____________
19. In Pelton ____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine.
20. The maximum efficiency of Pelton turbine is _________
21. The depth of buckets of Pelton wheel ____________
22. In Pelton turbine ___________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.
23. In Pelton turbine runner power is more when compared with power available at exit of nozzle.
24. In Pelton turbine hydraulic efficiency is product of mechanical efficiency and overall efficiency.
25. The value of coefficient of velocity is _____________