Engine 2014: General Subjects

1. A to maintain a level in a tank vented to the atmosphere, pressurized, or operating under a vacuum
2. B to maintain a tank level where there exists a variable vapor pressure atmosphere
3. C as a square root extractor when variable ratios are present in the processing system
4. D to maintain a constant flow differential across a turbine- driven, centrifugal pump

Tip: press A-D to answer