Geothermal Energy and Spray Valve Width Quiz
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Questions and Answers

What type of pump is designed to be installed underground, similar to a deepwell pump?

  • Booster pump
  • Submersible pump (correct)
  • Horizontal split case pump
  • Vertical shaft turbines pump
  • What is an underground formation that contains sufficient saturated permeable material to yield significant quantities of water?

  • Ground water
  • Aquifer (correct)
  • Well water
  • Wet pit
  • What type of enclosure is kept partially filled with water by an open body of water such as a pond, lake, or stream?

  • Aquifer
  • Well water
  • Ground water
  • Wet pit (correct)
  • Where does the water come from in a system where the well is driven into water-bearing subsurface strata?

    <p>Ground water</p> Signup and view all the answers

    In a pump system, what component imparts velocity to the liquid due to centrifugal force?

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

    Which part of a pump system protects the shaft as it passes through the stuffing box?

    <p>Shaft sleeve</p> Signup and view all the answers

    What is the bypass factor in the text referring to?

    <p>A dry-cooling tower setup</p> Signup and view all the answers

    Which type of device takes advantage of the Earth's interior temperature for heating and cooling?

    <p>Geothermal heat pumps</p> Signup and view all the answers

    Which term refers to the minimum fluid energy required at the pump for satisfactory operation?

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

    What is the name of the spring that shoots jets of hot water and steam into the air?

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

    What does the NPSHA represent in fluid mechanics?

    <p>Velocity head</p> Signup and view all the answers

    What is the power seat width of a spray valve?

    <p>1/16 in.</p> Signup and view all the answers

    How does throttling the input line to a pump affect cavitation?

    <p>Both increase cavitation</p> Signup and view all the answers

    Up to what pressure range are traditional reciprocating pumps with pistons and rods typically suitable?

    <p>2000 psi</p> Signup and view all the answers

    Which device automatically governs or controls the speed of an engine?

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

    What does EER stand for and represent in terms of efficiency?

    <p>Energy efficient ratio</p> Signup and view all the answers

    What pressure range are plunger pumps typically suitable for?

    <p>2000 psi</p> Signup and view all the answers

    Which of the following represents a reversed Rankine vapor cycle?

    <p>Vapor refrigeration cycle</p> Signup and view all the answers

    What is the recommended average temperature difference for coolers and chillers in water operations?

    <p>3 to 11 C</p> Signup and view all the answers

    To avoid freezing problems, what should be the temperature of the entering refrigerant?

    <p>Above -2 C</p> Signup and view all the answers

    What is the recommended minimum velocity for horizontal suction lines to carry oil back to the compressor?

    <p>3.8 m/s</p> Signup and view all the answers

    Which type of turbine is best suited for low heads, high rotational speeds, and larger flow rates?

    <p>Axial flow turbines</p> Signup and view all the answers

    Approximately what angle limits the deflected jet from interfering with the incoming jet?

    <p>165 deg.</p> Signup and view all the answers

    Which of the following terms refers to weight per unit volume?

    <p>Weight density</p> Signup and view all the answers

    What term is used to describe blowing the exhaust product out with the air-fuel mixture?

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

    In what form of supercharging do exhaust gases drive the supercharger?

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

    What is the term for the maximum speed of the turbine under no load and no governing?

    <p>Runaway speed</p> Signup and view all the answers

    Which statement is false when gasoline is used as diesel fuel?

    <p>Addition of lubrication oil to gasoline worsens the situation</p> Signup and view all the answers

    What is an advantage of hydro-plants among the following options?

    <p>Modern hydro generators give high efficiency over a considerable load range, improving the system</p> Signup and view all the answers

    What do we call the whole area behind a dam that drains into a stream or river where the dam is located?

    <p>Catchment area</p> Signup and view all the answers

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