Question
Download Solution PDFWhich of the following is the best suitable range of working head of Kaplan turbine?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Kaplan Turbine
- A Kaplan turbine is a type of reaction turbine specifically designed for low-head and high-flow applications. It is a propeller-type turbine with adjustable blades, which allows it to operate efficiently under varying water flow conditions. It is one of the most commonly used turbines in hydroelectric power plants where the available water head is relatively low.
Working Head Range:
- The Kaplan turbine is best suited for a working head range of 5 to 70 meters. This is because it is designed to harness energy from water at low to medium heads while maintaining high efficiency. The adjustable blades of the Kaplan turbine allow it to adapt to changing water flow conditions, making it highly versatile for such applications.
Working Principle:
- The Kaplan turbine operates on the principle of reaction and dynamic action of water. Water enters the turbine through a scroll casing and is directed onto the runner blades by guide vanes. The adjustable guide vanes control the flow of water, ensuring optimal efficiency. The water’s pressure energy is converted into mechanical energy as it flows through the turbine, causing the runner to rotate. The rotation of the runner drives the generator, which converts mechanical energy into electrical energy.
Features of Kaplan Turbine:
- Adjustable Blades: The runner blades of the Kaplan turbine are adjustable, allowing the turbine to maintain high efficiency across a wide range of water flow conditions.
- Reaction Turbine: It operates as a reaction turbine, meaning the water’s pressure energy is partially converted into kinetic energy before it reaches the runner.
- Low-Head Application: It is specifically designed for low-head applications, making it ideal for rivers and dams with small elevation differences.
- High Flow Rate: The Kaplan turbine is capable of handling large volumes of water, making it suitable for high-flow conditions.
Last updated on Jul 15, 2025
-> SJVN Executive Trainee Written Exam date is out, The computer based exam will be held on 10th, 14th August 2025.
->SJVN Executive Trainee recruitment 2025 application form has been released. Applicants can apply for the SJVN recruitment 2025 Executive Trainee till May 18.
->SJVN Limited has announced the recruitment notification for the position of Executive Trainee 2025.
->A total of 114 vacancies are available for the SJVN Executive Trainee Recruitment across various disciplines such as Civil, Mechanical, Electrical, Environment, Electronics & Communication, and more.
->The selection process of SJVN Executive Trainee recruitment 2025, as per the previous notification, includes a Computer-Based Test, Group Discussion, and Personal Interview.
->Once selected, candidates will be required to sign a service agreement bond of Rs. 10,00,000/- (Rs. 7,50,000/- for SC/ST/PWD candidates), committing to complete the prescribed training and serve the company for a minimum of 3 years.
->Candidates must refer to the SJVN Executive Trainee Previous Year Papers and boost their preparation for the exam.