I bought the MASS practice tests from Prephow and they were spot on. The questions drilled me hard on mechanical principles, electrical theory, print reading, and troubleshooting power plant systems. Felt totally ready walking into the real exam and passed on the first try. Worth every penny!
MASS Practice Test
Your Proven Shortcut to MASS - Power Plant Maintenance Selection System Success
Get exam-style questions, detailed explanations, and realistic timing to master the latest Edison Electric Institute (EEI). Prepare MASS practice test then walk into your Construction and Industry exam with confidence.
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How Our Practice Exam Works?
Study wherever, whenever with these quiz practice questions for MASS:
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You can choose Study Mode for course preparation and Exam Mode (timed 90-minute) for simulation.
Realistic Mix
MASS exam questions reflect both multiple-choice and scenario/performance-style prompts aligned to exam objectives.
Detailed Explanations
Every question includes a clear explanation, so you know why an answer is correct.
Domain Analytics
See strengths/weaknesses by the domains & sub-topics to focus your revision.
Reattempts
Retake MASS - Power Plant Maintenance Selection System practice exam to improve your speed and accuracy; watch your score trend toward the benchmark.
Exam Simulator
Get a feel for the real exam with our Edison Electric Institute (EEI) practice test.
Why Choose PrepHOW for MASS Practice Questions
Train the way you'll be tested. With the most clinically accurate, expertly written question bank, you’ll build the speed, accuracy, and confidence needed to pass the MASS - Power Plant Maintenance Selection System on your first attempt.
- 1. Practice & Exam modes to switch between learning and testing
- 2. Detailed answer explanations for every question
- 3. Instant scoring & feedback to show what you missed and why
- 4. Smart dashboard to track strengths, weaknesses, and progress
- 5. Study anywhere with mobile-friendly design
- 6. Updated MASS questions bank to match the latest exam changes
- 7. Free practice test to start - no credit card required
Real Exam Feel
Mock Exam/Study modes, question flagging, and instant or end-of-exam feedback.
Smarter Analytics, Faster Improvement
Trend charts so you can see when you're consistently above the passing scrore.
Quality You Can Trust
Clear, teach-back explanations with why the correct answer is right and why others aren't.
Frequently Asked Questions
What is the MASS Exam and who administers it?
The MASS (Maintenance Selection System) Exam is a pre-employment aptitude test designed by the Edison Electric Institute (EEI). Its purpose is to evaluate a candidate's aptitude and skills for maintenance positions within the electric utility industry, specifically in fossil, hydroelectric, and nuclear power plants.
What jobs does the MASS test cover?
It screens for positions like mechanic, electrician, welder, pipefitter, machinist, rigger, steelworker, instrument and control repairer, painter, and insulation worker.
How many sections are on the MASS Exam, and what are they?
The MASS exam is a paper-and-pencil, multiple-choice test typically composed of four main aptitude test batteries:
- Reading Comprehension
- Mechanical Concepts
- Assembling Objects (Spatial Ability)
- Mathematical Usage
What topics are covered on the MASS exam?
The MASS exam covers four main sections:
- Mechanical Concepts (testing understanding of tools, gears, pulleys, and physics principles)
- Reading Comprehension (evaluating the ability to interpret technical manuals and instructions)
- Mathematical Usage (focusing on algebra, fractions, decimals, and basic geometry)
- Assembling Objects (assessing spatial reasoning and visualization skills for assembling mechanical parts)
How can I prepare for the test?
Key preparation strategies include:
- Taking Prephow MASS practice tests under timed conditions
- Reviewing basic mechanical principles and physics
- Brushing up on math skills without a calculator
What is a passing score on the MASS exam?
There is no universal passing score for the MASS test. The required score varies depending on the specific job position and the company where you're applying. Your score is calculated as an index from 0-15, and each employer sets their own threshold based on the role.
Can I use a calculator on the MASS exam?
Calculators are provided during the test for the mathematical sections. You won't need to bring your own, and the test is designed to assess your problem-solving abilities with the tools you'd have on the job.
What is the difference between the MASS exam and the POSS exam?
Both are EEI aptitude tests. The MASS (Maintenance Selection System) exam is designed for maintenance positions (Electrician, Mechanic, etc.). The POSS (Plant Operator Selection System) exam is designed for plant operator positions. Some utilities may administer a combined test battery if a position has a progression path into either operations or maintenance.
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