Steam Turbines Basics Quiz
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Questions and Answers

What is the primary function of steam turbines?

  • Convert mechanical energy to electrical energy
  • Convert electrical energy to mechanical energy
  • Convert heat energy to mechanical energy (correct)
  • Convert mechanical energy to heat energy

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

  • Tangential direction away from the shaft
  • Vertical direction along the shaft
  • Radial direction around the shaft
  • Axial direction (parallel to the shaft) (correct)

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

  • The direction of steam flow through the turbine
  • The type of blades attached to the shaft
  • The method of pressure drop and velocity increase of the steam (correct)
  • The shape of the steam nozzles

    • What do the stationary passages of an impulse turbine consist of?

    <p>Stationary nozzles</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 happens to the velocity of steam as it moves into the reaction rotors?

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

    What important role does the condenser serve in a steam power plant?

    <p>All of the above</p> Signup and view all the answers

    When steam is exhausted from the low-pressure turbine to a condenser, what transformation occurs?

    <p>Steam transforms back into water (condensate)</p> Signup and view all the answers

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

    <p>It is taken advantage of at reduced pressure and increased volume</p> Signup and view all the answers

    What is the purpose of a boiler feed pump in a steam power plant?

    <p>To raise the pressure above the boiler pressure</p> Signup and view all the answers

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

    <p>To change the direction of the steam onto the rotor blades</p> Signup and view all the answers

    In a reaction turbine, how does the steam transmit a reaction force to the blades?

    <p>By causing a back thrust on the blading</p> Signup and view all the answers

    What is momentum in the context of steam turbines?

    <p>The product of mass times velocity</p> Signup and view all the answers

    How are impulse blades designed when fitted into a blade wheel?

    <p>To minimize steam pressure drop as the steam passes through</p> Signup and view all the answers

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

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

    What material are the blades made of in a steam turbine?

    <p>Stainless steel</p> Signup and view all the answers

    What does the rotor consist of in a steam turbine?

    <p>Forged steel disc</p> Signup and view all the answers

    How are bearings designed in a steam turbine for easy removal without disturbing other parts?

    <p>They have a split sleeve design</p> Signup and view all the answers

    The top half of the casing in a steam turbine can be removed without disturbing other parts or piping connections. True or False?

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

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