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Types of Dams: Buttress and Earthfill
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Types of Dams: Buttress and Earthfill

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Questions and Answers

What type of dams are constructed using natural materials such as soil, clay, and rock?

  • Buttress Dams
  • Massive Head Type Dams
  • Rigid Dams
  • Rock Fill Dams (correct)

    • Which type of dam is mainly made from dumped and compacted rock fill?

  • Rock Fill Dams (correct)
  • Earthen Dams
  • Deck Type Dams
  • Multiple Arch Type Dams

    • What is the characteristic of non-rigid dams in terms of materials used for construction?

  • They are built with materials like earth, rock, or timber (correct)
  • They are made of concrete or masonry
  • They rely on their own weight and strength
  • They have an impermeable core

    • Which type of dam is designed to resist water pressure through its own weight and strength?

    <p>Rigid Dams</p> Signup and view all the answers

    What is the purpose of buttresses in Buttress Dams?

    <p>To support the sloping deck</p> Signup and view all the answers

    What distinguishes rock fill dams from earthen dams?

    <p>The materials used</p> Signup and view all the answers

    What is the purpose of overflow dams?

    <p>To allow excess water to flow over the top of the dam structure</p> Signup and view all the answers

    Which of the following is true about nonoverflow dams?

    <p>They have spillways or outlets at lower levels</p> Signup and view all the answers

    What is the primary function of a reservoir?

    <p>Storing water for drinking water supply</p> Signup and view all the answers

    How is a reservoir typically formed?

    <p>By damming the outlet of a natural lake</p> Signup and view all the answers

    What is the difference between a storage reservoir and a direct supply reservoir?

    <p>Direct supply reservoirs have uncontrolled outflow</p> Signup and view all the answers

    Which of the following is an advantage of overflow dams?

    <p>Preventing flooding downstream</p> Signup and view all the answers

    What is the primary function of a dam gate known as a spillway gate?

    <p>Releasing water during high flow events</p> Signup and view all the answers

    Which component of a dam gate physically controls the flow of water?

    <p>Chute Spillway</p> Signup and view all the answers

    What is the purpose of a dam gate's operating mechanism?

    <p>Control the flow rate of water</p> Signup and view all the answers

    Which type of spillway does not have a gate to control flow?

    <p>Uncontrolled Spillway</p> Signup and view all the answers

    What type of mechanisms allow manual opening and closing of dam gates?

    <p>Manual Mechanisms</p> Signup and view all the answers

    In which type of spillway are mechanical structures or gates provided to regulate the flow rate of water?

    <p>Controlled Spillway</p> Signup and view all the answers

    What is the main purpose of spillways in a reservoir or dam?

    <p>Prevent reservoir overflow and downstream floods</p> Signup and view all the answers

    How do spillways contribute to maintaining reservoir management?

    <p>Releasing surplus water to maintain desired water levels</p> Signup and view all the answers

    What role do spillways play in preventing dam failure?

    <p>Provide a controlled outlet for water to reduce pressure</p> Signup and view all the answers

    How do spillways assist in sediment management in rivers and reservoirs?

    <p>Regulate flow to control sediment transport</p> Signup and view all the answers

    In what way can spillways be integrated into hydropower systems?

    <p>Releasing water when not needed for power generation</p> Signup and view all the answers

    What is the critical impact of spillways during periods of high inflow?

    <p>Can reduce the risk of dam failure by keeping water levels safe</p> Signup and view all the answers

    What type of mechanisms use hydraulic cylinders, pistons, or actuators to move the gate?

    <p>Hydraulic mechanisms</p> Signup and view all the answers

    What component is responsible for creating a watertight closure when the gate is closed?

    <p>Seals</p> Signup and view all the answers

    Which gate control system involves operators manually controlling gate operations using control panels, levers, or switches?

    <p>Manual control</p> Signup and view all the answers

    What is the main disadvantage of hydraulic systems mentioned in the text?

    <p>Risk of failure</p> Signup and view all the answers

    What type of gates are motorized systems often used for, according to the text?

    <p>Large gates</p> Signup and view all the answers

    In gate control systems, which type of control system uses sensors, actuators, and computerized algorithms for automatic gate positioning adjustments?

    <p>Automated control</p> Signup and view all the answers

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