Pelton Wheel - I | Attempts: 366 - Quiz, Trivia & Questions

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| By Manish Singh

Manish Singh

Community Contributor

Quizzes Created: 2 | Total Attempts: 548

| Attempts: 366

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1/15 Questions

The width of Pelton wheel should be 5 times the diameter of jet.
- A) True
- B) False

About This Quiz

Explore the Pelton Wheel's design through this quiz titled 'Pelton Wheel - I'. Assess key aspects like bucket dimensions, jet ratios, and runner diameters. Ideal for learners and professionals in mechanical engineering, enhancing understanding of Pelton Wheel mechanics.

2.

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
Correct Answer

A. A) 1.2 times diameter of jet

Explanation

Answer: a
Explanation: To obtain Pelton wheel of higher efficiency, depth of buckets is specified as 1.2 times diameter of jet by considering several experimental observations.

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3.

In most of cases the value of jet ratio is _______________
- A) 10
- B) 11
- C) 12
- D) 13
Correct Answer

A. C) 12

Explanation

Answer: c
Explanation: Jet ratio is 12 because in most of Pelton turbines diameter of runner is 12 times the diameter of jet.

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4.

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
Correct Answer

A. A) 15 + D/2d

Explanation

Answer: a
Explanation: To obtain Pelton wheel of higher efficiency, number of buckets is specified as 15 + D/2d by considering several experimental observations.

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5.

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
Correct Answer

A. D) 102mm

Explanation

Answer: d
Explanation: The expression for measuring depth of buckets is 1.2*diameter of jet, which is 1.2*85=102mm.

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6.

Find the pitch diameter of runner 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
Correct Answer

A. A) 1.25 meters

Explanation

Answer: a
Explanation: Expression for jet ratio is m=D/d which is 10*0.125= 1.25 meters.

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7.

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
Correct Answer

A. D) All of the mentioned

Explanation

Answer: d
Explanation: In design of Pelton wheel we determine diameter of jet, diameter of runner, Width of buckets, Depth of buckets, Number of buckets on runner.

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8.

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
Correct Answer

A. B) Jet ratio

Explanation

Answer: b
Explanation: The ratio of pitch diameter of Pelton wheel to diameter of jet is known as jet ratio.

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9.

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
Correct Answer

A. D) 425mm

Explanation

Answer: d
Explanation: The expression for measuring width of buckets is 5*diameter of jet, which is 5*85=425mm.

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10.

____________ 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
Correct Answer

A. A) Number of jets

Explanation

Answer: a
Explanation: Total discharge is sum of individual discharges hence, by dividing total rate of flow through the turbine by rate of flow through single jet we get number of jets.

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11.

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
Correct Answer

A. B) 75mm

Explanation

Answer: b
Explanation: The expression for measuring number of buckets is 15 + diameter of runner/2 times diameter of jet by using this expression we get diameter of jet as 75mm.

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12.

The ratio of diameter of jet to diameter of runner is _____________
- A) 1:3
- B) 1:6
- C) 1:5
- D) 3:4
Correct Answer

A. B) 1:6

Explanation

Answer: b
Explanation: To obtain Pelton wheel of higher efficiency, diameter of runner is 5 times diameter of jet by considering several experimental observations.

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13.

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
Correct Answer

A. D) 25

Explanation

Answer: d
Explanation: The expression for measuring number of buckets is 15 + diameter of runner/2 time’s diameter of jet, which are 15 + 1.5/2*0.085.

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14.

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
Correct Answer

A. D) 5 times diameter of jet

Explanation

Answer: d
Explanation: To obtain Pelton wheel of higher efficiency, width of buckets is specified as 5 times diameter of jet by considering several experimental observations.

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15.

Turbines installed at Bhakra Nangal are.
- A) pelton wheels
- B) Francis turbines
- C) Kaplan turbines
- D) propeller turbines
Correct Answer

A. A) pelton wheels

Explanation

Answer: a
Explanation: pelton wheels

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Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
Mar 26, 2020

Quiz Created by
Manish Singh

Pelton Wheel - I

The width of Pelton wheel should be 5 times the diameter of jet.

Quiz Preview

The depth of buckets of Pelton wheel ____________

In most of cases the value of jet ratio is _______________

Number of buckets on runner of Pelton wheel is given by expression? (D-diameter of runner and d- diameter of jet)

If diameter of jet is 85mm and diameter of runner is 1.5 meter then depth of buckets is ___________

Find the pitch diameter of runner D, if jet ratio m and diameter of jet d are given as 10 and 125mm.

Design of Pelton wheel means the following data is to be determined

The ratio of pitch diameter of Pelton wheel to diameter of jet is known as ___________

If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.

____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.

6. The number of buckets of Pelton wheel is 25 and diameter of runner is 1.5meters then calculate diameter of jet is ___________

The ratio of diameter of jet to diameter of runner is _____________

If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate number of buckets on Pelton wheel approximately

The width of buckets of Pelton wheel is _________________

Turbines installed at Bhakra Nangal are.