EEI CAST flashcards
EEI CAST · Build recall with a focused review session.
20 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Perpendicular moment arm
- The shortest perpendicular distance from the pivot to the force’s line of action, used to calculate the moment rather than an arbitrary lever length.
- Ideal mechanical advantage
- The ratio of load force to effort force in the stated lossless model, which exchanges force and distance without creating energy.
- Simple idler gear
- An intermediate gear that transmits motion and affects direction without changing the overall first-to-last ratio in the specified simple gear train.
- Passage-supported inference
- A conclusion justified by the actual supplied text and its conditions, rather than by an attractive outside assumption or invented workplace policy.
- First-class lever
- An arrangement with the pivot between effort and load, whose actual force advantage depends on the stated perpendicular moment arms.
- Second-class lever
- An ideal lever arrangement with the load between pivot and effort, exchanging effort force and movement distance under its stated geometry.
- Third-class lever
- An arrangement with effort between pivot and load, commonly favoring movement range or speed rather than reducing the required ideal effort force.
- Gear ratio
- A stated relation between input and output motion determined by the applicable tooth counts and arrangement, with direction and losses assessed separately.
- Belt no-slip model
- A simplifying relationship between pulley pitch diameters and rotational speeds that assumes compatible contact and neglects actual slip or belt losses.
- Perpendicular force component
- The portion of a force relevant to a specified direction or moment calculation, rather than automatically using the whole force magnitude.
- Unit conversion
- A change of numerical representation preserving the same physical quantity, requiring powers of the conversion factor for area and volume.
- Rate relationship
- A comparison of quantity change with time that requires consistent units and the stated assumptions about whether the rate stays constant.
- Drawing scale
- The ratio relating view size to represented size, which must not override an explicitly specified physical dimension on a technical drawing.
- Center distance
- A specified separation between the relevant centers, which should not be confused with an outside edge-to-edge distance or an arbitrary sketch length.
- Ideal work balance
- Equality of supplied input and output work in the stated lossless machine model, explaining why a force advantage does not create energy.
- Frictional resistance
- A contact-dependent opposition modeled under stated conditions, distinct from a force that has one universal value regardless of normal load and surface state.
- Sequence condition
- A stated prerequisite or ordering relationship that must be preserved when answering from an instruction rather than silently omitted for convenience.
- Relevant exception
- A condition in a supplied passage that limits its general instruction and must be considered before selecting an apparently broad summary.
- Magnitude check
- A rough comparison of a calculated result with plausible scales and units, useful for detecting a misplaced factor or inconsistent conversion.
- Compound gear shaft
- A common shaft carrying different gears whose combined ratios must be followed explicitly rather than treated as a simple freely turning idler.