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Which of the following water turbines does not require a draft tube?
- a)Propeller turbine
- b)Pelton turbine
- c)Kaplan turbine
- d)Francis turbine
Correct answer is option 'B'. Can you explain this answer?
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Which of the following water turbines does not require a draft tube?a)...
Ans. (b)
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Which of the following water turbines does not require a draft tube?a)...
Water Turbines and Draft Tube
Water turbines are machines that convert the energy of falling water into rotational mechanical energy. They are used in hydroelectric power plants for the generation of electricity. A draft tube is a component of a water turbine that reduces the velocity of water leaving the turbine and converts the kinetic energy into pressure energy. It is an important component of a water turbine as it helps in improving the efficiency of the turbine.
Types of Water Turbines
There are different types of water turbines available that are used for different types of water flows. The following are the types of water turbines:
1. Propeller Turbine: A propeller turbine is a type of water turbine that is used for low head and high flow rates. It consists of a rotor with a number of blades that are similar to those of a ship's propeller. It is commonly used in hydroelectric power plants.
2. Pelton Turbine: A Pelton turbine is a type of water turbine that is used for high head and low flow rates. It consists of a wheel with a number of buckets around its circumference. Water is directed onto the buckets, which causes the wheel to rotate.
3. Kaplan Turbine: A Kaplan turbine is a type of water turbine that is used for medium head and medium flow rates. It consists of a propeller-like rotor that is surrounded by a set of adjustable blades. The blades can be adjusted to optimize the turbine's performance.
4. Francis Turbine: A Francis turbine is a type of water turbine that is used for low to medium head and medium flow rates. It consists of a runner with curved blades that are arranged around a central hub. Water enters the turbine through a spiral casing and is directed onto the blades.
Turbines and Draft Tube
A draft tube is not required for a Pelton turbine as it is designed to operate without a draft tube. The buckets of a Pelton turbine are designed to redirect the water jet after it has passed through them. This redirection of the water jet causes a pressure drop that creates a partial vacuum behind the buckets. This partial vacuum helps to increase the efficiency of the turbine without the need for a draft tube.
Water turbines are machines that convert the energy of falling water into rotational mechanical energy. They are used in hydroelectric power plants for the generation of electricity. A draft tube is a component of a water turbine that reduces the velocity of water leaving the turbine and converts the kinetic energy into pressure energy. It is an important component of a water turbine as it helps in improving the efficiency of the turbine.
Types of Water Turbines
There are different types of water turbines available that are used for different types of water flows. The following are the types of water turbines:
1. Propeller Turbine: A propeller turbine is a type of water turbine that is used for low head and high flow rates. It consists of a rotor with a number of blades that are similar to those of a ship's propeller. It is commonly used in hydroelectric power plants.
2. Pelton Turbine: A Pelton turbine is a type of water turbine that is used for high head and low flow rates. It consists of a wheel with a number of buckets around its circumference. Water is directed onto the buckets, which causes the wheel to rotate.
3. Kaplan Turbine: A Kaplan turbine is a type of water turbine that is used for medium head and medium flow rates. It consists of a propeller-like rotor that is surrounded by a set of adjustable blades. The blades can be adjusted to optimize the turbine's performance.
4. Francis Turbine: A Francis turbine is a type of water turbine that is used for low to medium head and medium flow rates. It consists of a runner with curved blades that are arranged around a central hub. Water enters the turbine through a spiral casing and is directed onto the blades.
Turbines and Draft Tube
A draft tube is not required for a Pelton turbine as it is designed to operate without a draft tube. The buckets of a Pelton turbine are designed to redirect the water jet after it has passed through them. This redirection of the water jet causes a pressure drop that creates a partial vacuum behind the buckets. This partial vacuum helps to increase the efficiency of the turbine without the need for a draft tube.
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Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer?
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Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer?.
Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following water turbines does not require a draft tube?a)Propeller turbineb)Pelton turbinec)Kaplan turbined)Francis turbineCorrect answer is option 'B'. Can you explain this answer?.
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