30 Questions
What type of pump is designed to be installed underground, similar to a deepwell pump?
Submersible pump
What is an underground formation that contains sufficient saturated permeable material to yield significant quantities of water?
Aquifer
What type of enclosure is kept partially filled with water by an open body of water such as a pond, lake, or stream?
Wet pit
Where does the water come from in a system where the well is driven into water-bearing subsurface strata?
Ground water
In a pump system, what component imparts velocity to the liquid due to centrifugal force?
Impeller
Which part of a pump system protects the shaft as it passes through the stuffing box?
Shaft sleeve
What is the bypass factor in the text referring to?
A dry-cooling tower setup
Which type of device takes advantage of the Earth's interior temperature for heating and cooling?
Geothermal heat pumps
Which term refers to the minimum fluid energy required at the pump for satisfactory operation?
NPSHR
What is the name of the spring that shoots jets of hot water and steam into the air?
Geyser
What does the NPSHA represent in fluid mechanics?
Velocity head
What is the power seat width of a spray valve?
1/16 in.
How does throttling the input line to a pump affect cavitation?
Both increase cavitation
Up to what pressure range are traditional reciprocating pumps with pistons and rods typically suitable?
2000 psi
Which device automatically governs or controls the speed of an engine?
Governors
What does EER stand for and represent in terms of efficiency?
Energy efficient ratio
What pressure range are plunger pumps typically suitable for?
2000 psi
Which of the following represents a reversed Rankine vapor cycle?
Vapor refrigeration cycle
What is the recommended average temperature difference for coolers and chillers in water operations?
3 to 11 C
To avoid freezing problems, what should be the temperature of the entering refrigerant?
Above -2 C
What is the recommended minimum velocity for horizontal suction lines to carry oil back to the compressor?
3.8 m/s
Which type of turbine is best suited for low heads, high rotational speeds, and larger flow rates?
Axial flow turbines
Approximately what angle limits the deflected jet from interfering with the incoming jet?
165 deg.
Which of the following terms refers to weight per unit volume?
Weight density
What term is used to describe blowing the exhaust product out with the air-fuel mixture?
Scavenging
In what form of supercharging do exhaust gases drive the supercharger?
Turbocharging
What is the term for the maximum speed of the turbine under no load and no governing?
Runaway speed
Which statement is false when gasoline is used as diesel fuel?
Addition of lubrication oil to gasoline worsens the situation
What is an advantage of hydro-plants among the following options?
Modern hydro generators give high efficiency over a considerable load range, improving the system
What do we call the whole area behind a dam that drains into a stream or river where the dam is located?
Catchment area
Test your knowledge on geothermal energy devices, heat pumps, geysers, and spray valve measurements in this quiz. Questions include identifying geothermal devices, understanding geysers, and determining spray valve widths.
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