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At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.
The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.
Pipe friction coefficient f = 0.005 in the
Formula hf = 
Determine: (i) jet diameter (ii) Diameter of supply pipes
- a)d = 0.23 m and Dpipe = 2 m
- b)d = 0.16 m and Dpipe = 1.01 m
- c)d = 0.23 m and Dpipe = 1.01 m
- d)d = 0.16 m and Dpipe = 2 m
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
At a particular hydroelectric power plant, water available under a he...
Net available head H = Hg − Hf = 250 − 20 = 230 m Invoking the relation for specific speed,
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Power available from each machine,
∴ Number of machines
= 4.68 ; say 5 machines
Velocity of jet,
= 65.16 m/s
Tangential or peripheral velocity of bucket u = 0.46 × velocity of jet = 0.46 × 65.16 = 29.97 m/s
∴ Diameter of wheel, D =
= 0.881m
Power available from the turbine, per machine
∴ Discharge through each wheel,
Q = 
= 1.38 m3⁄s
Also, Q = Cd √2gH × area of jet ;
Hence jet diameter, d = 0.167 m
Total discharge for 5 machines = 5 × 1.38 = 6.9 m3/s
Discharge per pipe = 
= 2.3 m3/s
From the Darcy relation, loss of head
where the subscript p refers to pipe
∴ Diameter of pipe, dp = 
=1.019 m
Most Upvoted Answer
At a particular hydroelectric power plant, water available under a he...
Net available head H = Hg − Hf = 250 − 20 = 230 m Invoking the relation for specific speed,
Power available from each machine,
∴ Number of machines
= 4.68 ; say 5 machines
Velocity of jet,
= 65.16 m/s
Tangential or peripheral velocity of bucket u = 0.46 × velocity of jet = 0.46 × 65.16 = 29.97 m/s
∴ Diameter of wheel, D =
= 0.881m
Power available from the turbine, per machine
∴ Discharge through each wheel,
Q =
= 1.38 m3⁄s
Also, Q = Cd √2gH × area of jet ;
Hence jet diameter, d = 0.167 m
Total discharge for 5 machines = 5 × 1.38 = 6.9 m3/s
Discharge per pipe =
= 2.3 m3/s
From the Darcy relation, loss of head
where the subscript p refers to pipe
∴ Diameter of pipe, dp =
=1.019 m
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At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer?
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At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer?.
At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer?.
Solutions for At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
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Here you can find the meaning of At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice At a particular hydroelectric power plant, water available under a head of 250 m is delivered to the power house through three pipes each 2500 m long. Through these pipes, friction loss is estimated to be 20 m.The project is required to produce a total shaft output of 13.25 MW by installing a number of single jet Pelton wheels whose specific speed is not to exceed 38.5. The other pertinent data is Wheel speed = 650 revolutions per minute Ratio of bucket to jet speed = 0.46 Overall efficiency of the wheel = 85% For nozzle Cd = 0.94 and Kv = 0.97.Pipe friction coefficient f = 0.005 in theFormula hf = Determine: (i) jet diameter (ii) Diameter of supply pipesa) d = 0.23 m and Dpipe = 2 mb) d = 0.16 m and Dpipe = 1.01 mc) d = 0.23 m and Dpipe = 1.01 md) d = 0.16 m and Dpipe = 2 mCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
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