MASS Practice Test
Updated October 2026Facts verified Oct 19, 2026 against Edison Electric Institute (EEI), Employment Testing Department
The MASS test is administered by individual utility companies. Your score on the MASS exam is often transferable between different utility companies that use the EEI testing standard, valid for several years. Practice with the free MASS practice test on PracticeTestGeeks (7 questions with answer explanations).
- Entergy requires at least 30 days between a first and second attempt at the same EEI test, such as MASS, and allows no more than two attempts in any 12-month period. (jobs.entergy.com)
- At Entergy, a qualifying result on an EEI test such as MASS stays on file and remains valid until the position requirements change or the test changes. (jobs.entergy.com)
- Like most EEI employment tests, the MASS test can be given on paper, on computer or at a testing center, depending on how the hiring company chooses to run it. (Edison Electric Institute (EEI), Employment Testing Department)
- EEI does not give the MASS (Power Plant Maintenance Positions Selection System) test directly to applicants; candidates take it only through an electric company they have applied to that uses it. (Edison Electric Institute (EEI), Employment Testing Department)
- At Entergy, results from EEI tests such as MASS are usually available within five business days of the test date, and EEI itself does not give results to applicants. (jobs.entergy.com)
Facts verified Oct 19, 2026 against Edison Electric Institute (EEI), Employment Testing Department. Dates that have passed are removed automatically.
MASS Exam at a Glance
| Item | Detail | Official source |
|---|---|---|
| Retake policy | 30 days between attempts; max 2 attempts in 12 months (Entergy) | jobs.entergy.com |
| Validity | Valid until the position requirements or the test change (Entergy) | jobs.entergy.com |
| Delivery | Paper, computer or testing center (chosen by the employer) | Edison Electric Institute (EEI), Employment Testing Department |
| Eligibility | Employer-invited applicants only; EEI does not test applicants directly | Edison Electric Institute (EEI), Employment Testing Department |
| Score release | Usually within 5 business days (Entergy); EEI does not send results to applicants | jobs.entergy.com |
Facts verified Oct 19, 2026 against Edison Electric Institute (EEI), Employment Testing Department. Dates that have passed are removed automatically.
Free MASS Test Study Tools
Interactive MASS Test resources on PracticeTestGeeks, free to start:
- MASS Test flashcards — review key terms and concepts card by card
- MASS Test study guide — topic-by-topic overview of what the exam covers
- MASS Test cheat sheet — one-page printable summary for last-minute review
MASS Practice Test Questions
Prepare for the MASS - Test exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
MASS Test Dig Safe Regulations
MASS Exam Questions covering Test Dig Safe Regulations. Master MASS Test concepts for certification prep.
MASS Test Equipment Components and Inspection
Free MASS Practice Test featuring Test Equipment Components and Inspection. Improve your MASS Exam score with mock test prep.
MASS Test Load Charts and Capacity
MASS Mock Exam on Test Load Charts and Capacity. MASS Study Guide questions to pass on your first try.
MASS Test MA Laws and Regulations
MASS Test Prep for Test MA Laws and Regulations. Practice MASS Quiz questions and boost your score.
MASS Test Safe Operating Procedures
MASS Questions and Answers on Test Safe Operating Procedures. Free MASS practice for exam readiness.
MASS Test Standard Hand Signals
MASS Mock Test covering Test Standard Hand Signals. Online MASS Test practice with instant feedback.
MASS Aptitude Test
MASS Practice Questions for Aptitude Test. Build confidence for your MASS certification exam.
MASS Electrical Safety and Power Line Awar...
Free MASS Test covering Electrical Safety and Power Line Awareness. Practice and track your MASS exam readiness.
MASS Test Rigging and Slings
MASS Test Prep for MASS Test Rigging and Slings. Practice MASS Quiz questions and boost your score.
MASS Mechanical Concepts
MASS Practice Questions for Mechanical Concepts. Build confidence for your MASS certification exam.
MASS Test Assembling Objects
MASS Mock Exam on Test Assembling Objects. MASS Study Guide questions to pass on your first try.
MASS Test Mathematical Usage
MASS Test Prep for Test Mathematical Usage. Practice MASS Quiz questions and boost your score.
MASS Test Power Plant Safety
MASS Mock Test covering Test Power Plant Safety. Online MASS Test practice with instant feedback.
MASS Exam Flashcards
Quick review for the Maintenance Positions Selection System
🧠What does the MASS test measure?
The MASS test measures aptitude for power plant maintenance jobs like mechanics and electricians.
START MASS PRACTICE TEST🔧What are the 4 main sections?
The four sections are Assembly, Mechanical Concepts, Reading Comprehension, and Math Usage.
GET MASS EXAM PREP⏱️How long is the MASS exam?
The total testing time is approximately 4 hours, including instructions and breaks.
REVIEW MASS QUESTIONS⚙️What is Mechanical Concepts?
It tests understanding of basic mechanical principles like gears, pulleys, and levers.
TRY MASS MOCK EXAM📖Is reading comprehension hard?
It involves reading technical passages and answering questions to test information retention.
ACCESS MASS STUDY GUIDE🔢Can I use a calculator?
No, calculators are generally not permitted on the MASS Math Usage section.
PRACTICE MASS TEST NOWMASS Exam Study Guide
This comprehensive MASS study guide helps you understand the key components of the EEI MASS test.
MASS Score Calculator
Total Scored Questions
150
105 out of 150 correct
70%
Required to Pass: ~70% (Estimated)
Since the utility company covers the MASS test fee, your only investment is in preparation materials to ensure you pass.
MASS Test Day Checklist
- ✓Valid Photo ID
- ✓Confirmation Email
- ✓Arrive 30mins Early
- ✓No Calculator (usually)
- ✓Glasses (if needed)
- ✓Comfortable Clothes
- ✓Water Bottle
- ✓Positive Mindset
Ready to Pass the MASS Exam?
Join thousands of successful candidates who used our MASS practice test to launch their careers in the power industry.
MASS Renewal Requirements
Validity
Varies
Transferable
Yes
Passing the MASS exam at one EEI-member utility often qualifies you at others, meaning you may not need to retest when changing jobs.
- +Industry-recognized credential boosts your resume
- +Higher earning potential (10-20% salary increase on average)
- +Demonstrates commitment to professional development
- +Opens doors to advanced career opportunities
- −Exam preparation requires significant time investment (4-8 weeks)
- −Certification fees can be $100-$400+
- −May require continuing education to maintain
- −Some employers may not require certification
Sample MASS Test Practice Questions
Try these questions from our free MASS Test practice tests. The correct answer and an explanation follow each question.
Why is a permit-to-work system used for high-risk maintenance tasks?
- A. To slow down production
- B. To formally document hazards, controls, and authorization before work begins
- C. To assign parking spaces
- D. To track lunch breaks
Answer: B. To formally document hazards, controls, and authorization before work begins
Permit-to-work ensures hazards are identified and controls authorized so work proceeds only under safe conditions.
If a load chart lists capacities for 'fully extended outriggers,' using mid-extended outriggers means you must:
- A. Use the lower mid-extended capacity column instead
- B. Use the same numbers
- C. Increase the rated capacity
- D. Ignore the outrigger setting
Answer: A. Use the lower mid-extended capacity column instead
Reduced outrigger spread narrows the stability base, so a separate, lower capacity column applies.
Which of the figures below is a rotation of the original figure and NOT a mirror image? (Image showing one original asymmetrical 3D object and four other 3D objects would be here)
- A. Figure A
- B. Figure B
- C. Figure C
- D. Figure D
Answer: B. Figure B
Figure B is the only object that can be achieved by rotating the original object in space. Figures A, C, and D are mirror images (or enantiomorphs), meaning their features are reversed as if seen in a mirror, and they cannot be superimposed on the original through rotation alone.
An operator has a valid Dig Safe ticket and a yellow line has been painted on the ground, indicating a natural gas pipeline. What is the mandatory procedure for digging within the 'tolerance zone' of this marking?
- A. The operator may use a small backhoe bucket if a spotter is present.
- B. Excavation must be performed using non-mechanical means, such as hand digging.
- C. Mechanical digging is permitted as long as it does not go deeper than the frost line.
- D. The gas company must be on-site to supervise any mechanical excavation.
Answer: B. Excavation must be performed using non-mechanical means, such as hand digging.
The tolerance zone is defined as the width of the utility plus 18 inches on each side. Within this zone, Massachusetts law explicitly prohibits the use of mechanized equipment to prevent damage. Excavators must use non-mechanical means, like hand tools or vacuum excavation, to carefully expose the utility.
MASS Questions and Answers
Official Resources
- Edison Electric Institute (EEI) – Industry Training & Testing: EEI's Employment Testing Consortium page, which explains that EEI does not test applicants directly; you take the MASS through the hiring utility.
- EEI Employment Test Batteries (PDF): EEI's official list of its test batteries, describing MASS as the Power Plant Maintenance Positions Selection System for jobs such as mechanic, machinist, electrician, welder and pipe fitter.
- Center for Energy Workforce Development (CEWD): a non-profit consortium of utilities and their associations that publishes energy-industry career pathway and workforce resources.
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
- eei.org — Test delivery, eligibility · verified Oct 2026
- jobs.entergy.com — Retake policy, score release, score validity · verified Oct 2026