Hydraulic Machines Questions and Answers – Design of Pelton Wheel

This set of Hydraulic Machines Multiple Choice Questions & Answers (MCQs) focuses on “Design of Pelton Wheel”.

1. Design of Pelton wheel means the following data is to be determined.
a) Width of buckets
b) Depth of buckets
c) Number of buckets
d) All of the mentioned
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2. The width of buckets of Pelton wheel is _________________
a) 2 times diameter of jet
b) 3 times diameter of jet
c) 4 times diameter of jet
d) 5 times diameter of jet
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3. The depth of buckets of Pelton wheel ____________
a) 1.2 times diameter of jet
b) 1.3 times diameter of jet
c) 1.4 times diameter of jet
d) 1.5 times diameter of jet
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4. The ratio of pitch diameter of Pelton wheel to diameter of jet is known as ___________
a) Speed ratio
b) Jet ratio
c) Velocity ratio
d) Co-efficient of velocity
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5. Find the diameter of jet D, if jet ratio m and diameter of jet d are given as 10 and 125mm.
a) 1.25 meters
b) 1.5 meters
c) 2 meters
d) 1.2 meters
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6. The number of buckets of Pelton wheel is 25 and diameter of runner is 1.5meters then calculate diameter of jet is ___________
a) 80mm
b) 75mm
c) 90mm
d) 82mm
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7. In most of cases the value of jet ratio is _______________
a) 10
b) 11
c) 12
d) 13
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8. Number of buckets on runner of Pelton wheel is given by expression? (D-diameter of runner and d- diameter of jet)
a) 15 + D/2d
b) 15 + 3D/2d
c) 15 + D/d
d) 15 + 2D/d
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9. ____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.
a) Number of jets
b) Diameter of jets
c) Velocity of jets
d) Speed ratio
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10. If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.
a) 400mm
b) 500mm
c) 420mm
d) 425mm
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11. If diameter of jet is 85mm and diameter of runner is 1.5 meter then depth of buckets is ___________
a) 100mm
b) 105mm
c) 106mm
d) 102mm
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12. If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate number of buckets on Pelton wheel approximately
a) 20
b) 22
c) 23
d) 25
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13. The width of Pelton wheel should be 5 times the diameter of jet?
a) True
b) False
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14. The ratio of diameter of jet to diameter of runner is _____________
a) 1:3
b) 1:6
c) 1:5
d) 3:4
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Sanfoundry Global Education & Learning Series – Hydraulic Machines.

To practice all areas of Hydraulic Machines, here is complete set of 1000+ Multiple Choice Questions and Answers.