At Grade 1 the largest block is Inspection, Maintenance, Installation and Repair (27% of the exam).
For the technicians who keep pumps, blowers, motors, drives and mechanical plant equipment running.
Start studying Grade 1| Content area | % of the exam | |
|---|---|---|
| Inspection, Maintenance, Installation and Repair | 27 | |
| Tools and Equipment | 19 | |
| Records, Reports and SCADA | 12 | |
| Safety | 20 | |
| Communication | 12 | |
| Math | 10 |
Math: belt drive speed · an original practice item written only from publicly available sources, not a real exam question
A 1,180 rpm motor with an 8-inch sheave drives a fan through a 12-inch sheave. What speed does the fan turn?
B. 787 rpm
Driven speed = driver speed × driver diameter ÷ driven diameter = 1,180 × 8 ÷ 12 = 787 rpm. 1,770 inverts the sheave ratio (a larger driven sheave slows the load down, not up), 1,180 ignores the ratio, and 98 divides the motor speed by the driven sheave diameter alone.
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Topic coverage follows Mechanical Technologist Candidate Handbook, Version 2026.01 (California Water Environment Association, effective May 2026). Practice questions are written only from publicly available sources (that outline and the regulations and references it cites); they are not real exam questions, which are confidential. Check current application requirements, fees and exam dates on the certifying body's own page: official certification page.
Questions, flashcards, and explanations are AI-written from publicly available sources only: the exam content outlines and candidate materials each certifying body publishes without restriction, and the regulations and technical references they cite. No confidential material is used, including actual exam questions, recollections of any exam sat by the author, or any handbook or document released under a confidentiality agreement. Content is then put through repeated review — regulatory values checked against primary sources, every calculation recomputed, and errors corrected — plus spot checks by the author, who holds California water operator certifications and a California civil engineering licence. Those spot checks are sampling, not a professional review: nothing here is stamped, sealed, or offered as engineering advice, and not every item has been individually verified, so mistakes can still slip through.