Practice Test GeeksSE Engr. - Solar Energy Engineering Certification Practice Test
← All SE ENGR. Flashcard Decks

Quality Assurance Flashcards

7 cards from real SE ENGR. practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quality Assurance flashcards as text

  1. Under IEC 62446-1, which test is part of the Category 1 commissioning sequence for all PV systems?

    Answer: Insulation resistance of array circuits

    Category 1 includes protective earth continuity, polarity, string Voc/Isc, functional tests, and insulation resistance.

  2. What is the main reason module manufacturers specify a positive-only power tolerance such as 0/+5 W?

    Answer: To guarantee flash-tested power is never below nameplate rating

    Positive-only tolerance assures buyers each module delivers at least its nameplate STC power.

  3. Snail trails visible on installed modules are most commonly associated with which underlying condition?

    Answer: Cell microcracks combined with a reaction of silver paste and encapsulant

    Snail trails form along microcracks where moisture and encapsulant additives react with silver fingers, causing discoloration.

  4. Light-induced degradation (LID) in conventional p-type Czochralski silicon cells is primarily caused by which mechanism?

    Answer: Boron-oxygen complex formation

    Boron-oxygen defects form under initial light exposure in p-type Cz silicon, reducing carrier lifetime.

  5. Which certification standard addresses grid-support functions so that US inverters can demonstrate IEEE 1547-2018 compliance?

    Answer: UL 1741 SB

    UL 1741 Supplement SB tests inverters against IEEE 1547.1-2020 for IEEE 1547-2018 grid-support compliance.

  6. A control chart of daily string inverter efficiency shows seven consecutive points above the centerline, all within control limits. What should a QA engineer conclude?

    Answer: A non-random shift has likely occurred and should be investigated

    Run rules flag long runs on one side of the centerline as a likely special-cause shift even within limits.

  7. Why must irradiance and module temperature be recorded alongside field I-V curve measurements?

    Answer: To translate measured values to STC for comparison with datasheet ratings

    Field I-V data must be corrected to STC using irradiance and cell temperature to compare with rated performance.