Question Detail
For low head and high discharge, the hydraulic turbine used is
Options
- Option A: Kaplan turbine
- Option B: Francis turbine
- Option C: Pelton wheel
- Option D: Jonual turbine
Correct Answer
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<p>Kaplan turbine</p>
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Solution & Explanation
{"type":"technical","methodBadge":"Concept & Principle","explanation":"The Kaplan turbine is an axial flow reaction turbine specifically designed for low-head and high-discharge conditions. It utilizes adjustable runner blades that allow it to maintain high efficiency across a wide range of flow rates.","workingPrinciple":"The turbine operates on the reaction principle where water flows axially through the runner. As water passes through the adjustable blades, a pressure drop occurs, transferring kinetic and potential energy to the runner. The pitch of the blades can be adjusted dynamically based on the flow rate to maintain optimal hydraulic efficiency.","diagramSvg":"Adjustable BladesWater Flow (Axial)","keyFormulas":["$N_s = \\frac{N\\sqrt{P}}{H^{5/4}}$ тАФ Specific speed formula for turbine classification","$Q = A \\cdot v$ тАФ Discharge continuity equation"],"keyPoints":["Kaplan turbine is an axial flow reaction turbine.","Suitable for heads below 30 meters.","High specific speed allows for large volume handling.","Features adjustable runner blades for variable load efficiency."],"advantages":["High efficiency at partial loads.","Compact design for low-head sites.","Capable of handling very high flow rates."],"disadvantages":["Complex design due to moving runner blades.","Prone to cavitation at high velocities.","Not suitable for high-head applications."],"applications":["Run-of-river power plants.","Low-head hydroelectric irrigation projects."],"comparisonTable":[{"feature":"Head Type","option1":"Low Head","option2":"High Head","label1":"Kaplan","label2":"Pelton"},{"feature":"Flow Type","option1":"Axial","option2":"Tangential","label1":"Kaplan","label2":"Pelton"}],"additionalInfo":["Kaplan turbine is a propeller-type turbine with adjustable blades.","Francis turbine is used for medium heads (30-300m).","Pelton wheel is an impulse turbine used for high heads (>300m)."],"answer":"A is correct тАФ The Kaplan turbine is specifically engineered for low-head and high-discharge hydraulic conditions.","correctedOptions":["\n\n\nKaplan turbine\n\n\n","\n\n\nFrancis turbine\n\n\n","\n\n\nPelton wheel\n\n\n","\n\n\nJonual turbine\n\n\n"],"coreConcepts":["Axial Flow Reaction Turbine","Specific Speed ($N_s$)","Head and Discharge relationship"],"crossTopicTip":"Remember the hierarchy of head: Pelton (High), Francis (Medium), Kaplan (Low). Specific speed increases as head decreases."}
Question (Hindi)
рдХрдо рд╣реЗрдб (low head) рдФрд░ рдЙрдЪреНрдЪ рдбрд┐рд╕реНрдЪрд╛рд░реНрдЬ (high discharge) рдХреЗ рд▓рд┐рдП, рдЙрдкрдпреЛрдЧ рдХреА рдЬрд╛рдиреЗ рд╡рд╛рд▓реА рд╣рд╛рдЗрдбреНрд░реЛрд▓рд┐рдХ рдЯрд░рдмрд╛рдЗрди рд╣реИ
Options (Hindi)
