Bac STI2D - independent subject practice case studies
Bac STI2D - independent subject practice · Put your knowledge to work in context.
This independent study page provides practice for Bac STI2D - independent subject practice. Its editorial learning areas include Engineering models, drawings, evidence and project decisions; Materials, testing and selection; Building systems, load paths, heat and moisture; Energy, thermal machines and environmental assessment; Electrical circuits, machines and digital logic; Measurement, feedback, PLC and automation; Computing Systems; Calculus; Algebra and Functions; Physical chemistry, amounts, reactions and equilibria. The Bac STI2D - independent subject practice case studies are 6 cases and about 2,018 words.
1A supplied energy and budget comparison
A fictional school compares two low-voltage demonstration systems that provide the same measured service under the exercise conditions. System A draws two hundred watts for three hours, while System B draws one hundred fifty watts for four hours.
205 words, about 1 min2Measurement resolution and a specified requirement
A fictional design team receives a component drawing with a stated acceptance interval and an instrument report. One instrument displays more decimal places than another, but its calibration record is missing.
198 words, under 1 min3A model and a drawing disagree
A fictional engineering group analyzes a classroom support frame and a sensor mounting plate. The spreadsheet uses one span length while the latest drawing shows a different dimension.
188 words, under 1 min4A documented sensor model and a design choice
A fictional classroom project compares two sensing arrangements for an energy-monitoring model. Both arrangements use a supplied linear input-output relation, but one has a larger full-scale range and coarser increments.
197 words, under 1 min5The Memory Hierarchy Upgrade Committee
A high school robotics team runs a simulation on 40 single-board computers. Each board has a 32 KB L1 cache with a 1-cycle hit time, a unified L2 cache with a 10-cycle hit time, and 100-cycle main memory.
609 words, about 3 min6Strain-Gauge Calibration: Least Squares After a Suspect Reading
A calibration technician records a strain gauge's output y (mV) at five known loads x (kN): (1, 2.10), (2, 3.95), (3, 6.10), (4, 7.85), (5, 10.20). The intended model is y = a + bx.
621 words, about 3 min