POSS: Mathematical Usage Flashcards
7 cards from real Plant Operator Selection System Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 POSS: Mathematical Usage flashcards as text
A storage tank has a volume of 800 cubic feet. If 1 cubic foot holds approximately 7.48 gallons, about how many gallons does the tank hold?
Answer: 5,984 gallons
800 × 7.48 = 5,984 gallons.
A plant runs for 16 hours a day, 5 days a week. How many hours does it operate in a 4-week month?
Answer: 320 hours
16 × 5 × 4 = 320 hours per month.
If pressure reads 45 PSI and must be reduced by 40%, what is the new reading?
Answer: 27 PSI
45 × 0.40 = 18; 45 − 18 = 27 PSI.
Three workers split a bonus of $1,245 equally. How much does each receive?
Answer: $415
$1,245 ÷ 3 = $415 each.
A pipe delivers 12.5 gallons per minute. How long will it take to fill a 500-gallon tank?
Answer: 40 minutes
500 ÷ 12.5 = 40 minutes.
A meter reads 2,376 kWh at the start of the month and 3,015 kWh at the end. How many kWh were used?
Answer: 639 kWh
3,015 − 2,376 = 639 kWh.
A rectangular basin measures 50 feet long, 20 feet wide, and 8 feet deep. What is its volume in cubic feet?
Answer: 8,000 cubic feet
50 × 20 × 8 = 8,000 cubic feet.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
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
- corporate.pseg.com — Exam format, passing score, time limit, exam information · verified Nov 2026
- eei.org — Eligibility, test delivery, score release · verified Oct 2026