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Plant Operator Selection System Test Cheat Sheet 2026

The 30 highest-yield Plant Operator Selection System Test facts, distilled from real exam questions. Print it, save it as a PDF, or study it here โ€” free, no sign-up.

Plant Operator Selection System Test exam key facts

  • The Plant Operator Selection System (POSS) battery takes about two hours to administer. Source
  • POSS component scores are combined into an index score ranging from 0 to 15, with no penalty for guessing. Source
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84 questions
30 min time limit
70% to pass
  1. 2 miles equals? yards. โ†’ 3520
  2. Which of the following cannot be the result of rotating a rectangle (that is not a square)? โ†’ A square
  3. A threaded bolt with more threads per inch (finer thread) compared to a coarser thread will: โ†’ Require more turns to advance the same distance
  4. Which of these three pulleys, numbered 1, 2, or 3, rotates the fastest? โ†’ three
  5. A pressure transmitter has a range of 0-100 psig and a 4-20 mA output. What current signal corresponds to 50 psig? โ†’ 12 mA
  6. Which of the following statements is untrue in light of the information in the passage? โ†’ Static electricity is caused by friction.
  7. A valve handle is currently pointing straight up (12 o'clock position). If it is rotated 90 degrees clockwise, where does the handle point? โ†’ 3 o'clock position
  8. A pipe with an outside diameter of 4 inches and a wall thickness of 0.5 inches has an inside diameter of: โ†’ 3 inches
  9. Which of the following best describes the purpose of a pressure relief valve in a piping system? โ†’ To prevent system pressure from exceeding a safe limit
  10. On a Process and Instrumentation Diagram (P&ID), a dashed line connecting an instrument to a control element typically represents: โ†’ An electrical or pneumatic signal
  11. A temperature drops from 212ยฐF to 98.6ยฐF. By how many degrees did it drop? โ†’ 113.4ยฐF
  12. In process control, 'cascade control' means: โ†’ Two controllers where the output of the primary sets the setpoint of the secondary
  13. A pressure gauge on a storage tank reads 50 PSIG. The local atmospheric pressure is 14.7 PSIA. What is the absolute pressure inside the tank? โ†’ 64.7 PSIA
  14. How common is static electricity, according to the passage? โ†’ It is very common.
  15. A worker earns $18.50 per hour and works 9 hours in one shift. What is the total pay for that shift? โ†’ $166.50
  16. An operator faces north and makes a 90-degree turn to the right, then another 90-degree turn to the right. What direction is the operator now facing? โ†’ South
  17. A wheel with a diameter of 2 feet has a mark painted at the very top. After the wheel rolls forward one full revolution, where is the painted mark? โ†’ At the top of the wheel again
  18. A rectangular settling pond is 200 feet long, 80 feet wide, and 6 feet deep. What is the volume in cubic feet? โ†’ 96,000 cu ft
  19. A level transmitter in a tank reads higher than the actual level. The most likely cause is: โ†’ A plugged or blocked impulse line on the low-pressure side
  20. In a steam system, which device removes condensed water (condensate) from the steam lines without allowing steam to escape? โ†’ Steam trap
  21. A grid shows: Row 1 has โ—โ—โ—‹, Row 2 has โ—โ—‹โ—‹, Row 3 has โ—‹โ—‹โ—‹. How many filled circles are in the pattern overall? โ†’ 3
  22. A technician has a 500 mL solution that is 8% acid. How many milliliters of acid does the solution contain? โ†’ 40 mL
  23. A pipe has an inside diameter of 6 inches. What is the cross-sectional area of the pipe? (Use ฯ€ โ‰ˆ 3.14) โ†’ 28.26 sq in
  24. When a pressure relief valve activates unexpectedly during normal operations, the operator's FIRST action should be to: โ†’ Notify the control room and monitor the pressure reading
  25. Which type of valve is best suited for completely stopping or fully opening flow in a pipeline, but is NOT recommended for throttling? โ†’ Gate valve
  26. A Safety Instrumented System (SIS) is designed to: โ†’ Automatically bring the process to a safe state when a dangerous condition is detected
  27. If Gear A makes one complete clockwise revolution, which of the following statements is true about Gear C? โ†’ Gear C will make less than one revolution in a clockwise direction.
  28. Which of the following figures is the 'odd one out' and does not belong with the others based on a logical pattern? โ†’ A large hexagon containing four small circles.
  29. A pipe leaks at a rate of 0.5 gallons per minute. How many gallons are lost in a 40-hour work week? โ†’ 1,200 gallons
  30. A wrench with a 12-inch handle requires 30 lb of force to turn a bolt. What force would be needed if the handle were extended to 18 inches? โ†’ 20 lb
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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. corporate.pseg.com โ€” Exam format, passing score, time limit, exam information ยท verified Nov 2026
  2. eei.org โ€” Eligibility, test delivery, score release ยท verified Oct 2026