Pressure-Test Records: Time Windows, Gauge Readings and Data Limits

Pressure-Test Records: Time Windows, Gauge Readings and Data Limits

Original quantitative learning practice in English. All 24 questions are included. Four supplied cases exercise six related calculation targets; they form one topic, not four separate tests. Every question includes the complete initial data. Use the stated model and retain intermediate precision. Choose one answer. Learning target: 20/24, not an official pass mark. This bank covers the calculation topic in its title; it is not a complete professional examination, design approval or operating instruction.
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A supplied training log records a gauge pressure 260 kPa at t=0 min, 257 kPa at t=10 min, and 253 kPa at t=30 min. For arithmetic only assume linear change between adjacent readings. A separate reference gauge correction is -1 kPa added to every reading. The exercise comparison rule permits at most 5 kPa decrease over the FULL 30-minute interval. No operating procedure, actual test pressure, leak diagnosis or fire-system acceptance standard is supplied. Calculate the corrected final reading in kPa. Keep intermediate values unrounded; round the final result to four decimal places if necessary.