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Quiz-growth arc, next bank: psychrometrics-basics grows past the page's defaultCount (10) so the engine samples a different subset each run. Add-only -- the existing ten questions are untouched; the header gains the metric-parenthetical note, the sampling note and a coverage sentence that names lesson sections rather than counting questions. New questions, each from a lesson section the ten didn't test: - psy-wet-bulb-floor (mcq, #properties): wet-bulb is the evaporative floor a cooling tower can never beat; dew point is the decoy. - psy-coil-leaving-pair (tf, #two-lock): DB + WB, not DB + RH, is the gold-standard coil leaving-air pair (the field-pairs table). - psy-cooling-dehumidification (mcq, #processes): below the entering dew point, DB, W and DP all fall -- the one process family the bank skipped. - psy-cfm-to-mass-flow (numeric, #gotchas): m = CFM * 60 / v worked by hand, 10,000 CFM at 13.5 ft3/lb -> 44,444 lb/h. - psy-pool-glass-at-spec (gotcha, #pool-widget): a pool room holding 60 % RH at 82 F still sweats 50 F glass (dew point near 67 F) -- the widget's own default state. The capstone's section heading has no id, so it anchors the widget container; noted in the header. Correct-letter distribution a1/b7/c0/d0 -> a2/b7/c1/d1. Every new temperature parenthetical, including the gotcha's 17 F (9.4 C) margin from displayed operands, is reached by metric-spans. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
controlsfreak | 590e9b9 | Commit Preview URL Branch Preview URL |
Oct 07 2026, 02:24 AM |
The refuter found that psy-cfm-to-mass-flow's metric path did not close. The prompt paints 17,000 m3/h and 0.84 m3/kg; a metric reader working those operands gets 17,000 / 0.84 = 20,238 kg/h = 44,617 lb/h, 173 lb/h off the keyed 44,444 and outside tolerance: 50, so a correct reading of the displayed numbers was marked wrong. The metric worked-example policy says the taught math must close on the displayed operands. Widen the tolerance to 250: 44,617 lands inside, while the v = 14.0 ft3/lb distractor (42,857 lb/h) stays 1,587 lb/h outside, so the question still discriminates. The prompt, answer and explain are unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Summary
Quiz-growth arc, next bank: the Psychrometrics Basics bank grows from 10 to 15 questions so it outgrows the practice page's
defaultCount(10) and each run draws a different subset. Nothing is removed: the ten existing questions are unchanged, and each of the five new ones tests a lesson section the bank had not covered yet.Changes
html/_data/quizzes/psychrometrics-basics.jsis the only file changed.psy-wet-bulb-floor#properties: wet-bulb is the evaporative floor (the cooling-tower number); dew point is the decoypsy-coil-leaving-pair#two-lock: the field-pairs table. DB + WB, not DB + RH, is the gold standard for a coil leaving-air readingpsy-cooling-dehumidification#processes: cooling with dehumidification. DB, W and DP all fall, and the path heads toward the apparatus dew pointpsy-cfm-to-mass-flow#gotchas: the specific-volume callout'sṁ = CFM · 60 / vworked by hand (stays in IP units, with a metric aside)psy-pool-glass-at-spec#pool-widget: a room holding 60 % RH at 82 °F (27.8 °C) still sweats 50 °F (10.0 °C) glass, because its dew point is near 67 °F (19.4 °C). This is the widget's default statepsychro-engine.js(the engine the lesson's widget runs). Every temperature parenthetical uses the displayed operands, andmetric-spanschecks them.Does This Air Sweat the Windows?) has no id. Its question deep-links#pool-widget, the widget container, and the header comment says so. No ids were added to the lesson.Owner: if you have a field gotcha of your own on psychrometrics, such as a dew-point call that bit a job, feel free to swap it in for any of these five.
Test plan
npm run buildis cleantests/quiz-banks.spec.js: 42/42 passedtests/metric-spans.spec.js: 3/3 passedtests/link-integrity.spec.js: 4/4 passed. This includes the learnMore fragment check, which resolves#pool-widgettests/smoke.spec.js -g "psychrometrics basics": 3/3 passed (practice page, lesson page, pool-widget sweep)npm run metric-lint(report-only): no finding for this bankRefuter fixes applied
psy-cfm-to-mass-flow: tolerance widened from 50 to 250 lb/h (commit 590e9b9). The metric path did not close before this fix. A reader working the painted metric operands gets 17,000 m³/h ÷ 0.84 m³/kg = 20,238 kg/h, which is 44,617 lb/h. That is 173 lb/h off the keyed 44,444, so ±50 marked a correct answer wrong, against the metric worked-example rounding policy. With ±250, 44,617 is accepted. The v = 14.0 ft³/lb distractor (42,857 lb/h) is still 1,587 lb/h outside the band, so the question still separates the two readings. The prompt, the answer and the explain are unchanged, and the explain's "about 20,200 kg/h" still holds (44,444 lb/h = 20,160 kg/h).tests/quiz-banks.spec.js+tests/metric-spans.spec.js+tests/link-integrity.spec.js: 49/49 passed.Merge authority
Quiz bank renders into a live practice page → owner merges.
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