Steam Turbines Basics Quiz
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Questions and Answers

What is the main function of a steam turbine?

  • Convert heat energy to mechanical energy (correct)
  • Convert steam to high-pressure steam
  • Direct high velocity steam onto shaft-mounted disks
  • Convert mechanical energy to heat energy

    • In which direction does the steam flow in most steam turbines?

  • Radial direction around the shaft
  • Perpendicular to the shaft
  • Axial direction (parallel to the shaft) (correct)
  • Opposite to the direction of the shaft rotation

    • What is the main difference between impulse and reaction turbines?

  • The type of steam used in the turbines
  • The shape of the nozzles in the turbines
  • How the steam expands through the turbine (correct)
  • The speed at which the steam flows through the turbine

    • What is the function of stationary nozzles in an impulse turbine?

    <p>To convert thermal energy into mechanical energy</p> Signup and view all the answers

    What is the purpose of the moving blades in a steam turbine?

    <p>To convert heat energy into mechanical energy</p> Signup and view all the answers

    What is the purpose of the stationary nozzles in a steam turbine?

    <p>To change the direction of the steam flow and transmit an impulse force to the moving blades</p> Signup and view all the answers

    How do impulse turbine blades differ from reaction turbine blades?

    <p>Impulse turbine blades allow steam pressure to drop, while reaction turbine blades do not</p> Signup and view all the answers

    What is the function of the bearings in a steam turbine?

    <p>To support and guide the rotor shaft</p> Signup and view all the answers

    What is the purpose of sealing glands in a steam turbine?

    <p>To prevent leakage of steam from the wheel case along the shaft</p> Signup and view all the answers

    Why is it important for the top half of the casing of a steam turbine to be removable without disturbing other parts or piping connections?

    <p>To allow for easy inspection and maintenance</p> Signup and view all the answers

    What happens to the velocity of steam as it moves through the impulse rotors?

    <p>It decreases while the pressure remains constant</p> Signup and view all the answers

    What is the primary function of the condenser in a steam power plant?

    <p>To provide a source of boiler feedwater</p> Signup and view all the answers

    What happens to the pressure of steam as it moves into the reaction rotors?

    <p>It reduces in each moving rotor wheel</p> Signup and view all the answers

    What is the purpose of superheating the steam in a boiler?

    <p>To provide high-energy steam for driving a turbine</p> Signup and view all the answers

    Why is a high vacuum produced in the condenser important for a steam power plant?

    <p>To produce more work and a higher degree of efficiency</p> Signup and view all the answers

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