Question
The three main types of these devices are axial flow, centrifugal, and positive displacement. For 10 points each:
[10e] Name these devices that mechanically move or transfer energy to a fluid. Homeowners prevent basement flooding during rainstorms by using these devices to transfer water out of a sump basin.
ANSWER: pumps [accept sump pumps]
[10m] A principle cause of routine wear-and-tear to pumps is this phenomenon in which a sudden large pressure drop below the vapor pressure is followed by energy release via shock waves when the pressure is increased.
ANSWER: cavitation [prompt on, but DO NOT REVEAL, head loss]
[10h] This quantity measures the tendency of a pump to resist cavitation. This value is the difference between the suction-side and vapor values of a quantity calculated as pressure over the product of fluid density and little g.
ANSWER: net positive suction head [or NPSH; prompt on partial answers that include “head”]
<Billy Busse, Physics>
Summary
| 2023 Chicago Open | 08/05/2023 | Y | 9 | 14.44 | 100% | 33% | 11% |
Data
| I would prefer not to | The Catastrophic Implosion of Packet Sub | 10 | 0 | 10 | 20 |
| Curse you, Periplus the Platypus! | Saint Peter Andre 3000 | 10 | 10 | 0 | 20 |
| The Plague (anime)" was redirected to: "Oran High School Host Club | I prefer really not to speak. If I speak I’m in big trouble | 10 | 0 | 0 | 10 |
| Don't be Afraid, the Clown's Afraid Too | Quasicrystal Silence | 10 | 0 | 0 | 10 |
| remembrance of lost time | The Canadians | 10 | 0 | 0 | 10 |
| Teach Us to Outgrow Our Ladness | The anti-STOON-dahl cabal (the tall Keyal et al.) | 10 | 10 | 0 | 20 |
| Romanos IV Diogenes’ Macaroni Grill | Team Name Think Detail | 10 | 10 | 0 | 20 |
| wave2: trimming membership codes 9655377758gp | Hang et al., Robert Browning | 10 | 0 | 0 | 10 |
| In Search of Things Past | [moderator voice] yes that is so tenpointscore! is your team feeling bonuspilled? | 10 | 0 | 0 | 10 |