Interactive lesson
Mechanics of Materials · Mohr’s circle
This demo is a representative excerpt from a full interactive lesson, not the complete lesson.
Prep for the FE and PE exams in short daily sessions. Interactive lessons, adaptive drills and full-length practice exams in the real NCEES question formats, built by engineers who passed both exams and teach engineering.
See it in action
Try these FE Mechanical examples. This is a read-only demonstration: no study attempts, XP or personal data.
Interactive lesson
This demo is a representative excerpt from a full interactive lesson, not the complete lesson.
Method flashcard
Practice exam
Interactive demonstration · not an exam attempt
Untimed sample question
Air is compressed isentropically in a piston–cylinder device. Which property stays constant during the process?
What’s inside every exam
Eight things every PE Mentor course gives you, from the first lesson to exam morning.
01
Work through engineering ideas with diagrams and questions. Change a stress state, inspect a beam, then test what you understand.
02
Formulas, step-by-step procedures, common traps and a diagram where one helps.
1. Draw the FBD · 2. Pick a moment point · 3. ΣF = 0, ΣM = 0
Method card example03
Practice from easy to hard, with hints and worked solutions. Learn the method, not just an answer.
04
Timed sections with a break, a review screen and flag-for-review. Or take it untimed in Chill mode.
05
The formats the real exam uses, not just multiple choice.
06
Topic-by-topic breakdown and accuracy trends, so you know what to study next.
07
Earn shields by completing lessons or scoring at least 80% in quizzes, up to three stored shields. A shield covers a missed day.
08
Any modern browser on laptop, tablet or phone, in light or dark mode.
How it works
The 900-page review manual assumes you have six free months. You don't. PE Mentor gives you a focused daily session you can finish after work, structured so it compounds.
01
Choose your exam and tell us when you test. We recommend a daily goal and put it on your calendar.
02
Work through an interactive lesson, then a quiz that climbs from easy to hard. Miss one and you get hints, the first step, and a full worked solution.
03
Take full-length practice exams with timed sections, the optional break, and the same question formats NCEES uses.
04
Your readiness score is weighted by topic and difficulty. When it says ready, you can see why.
The useful difference
You’re not buying more hours of content. You’re building the judgment, recall, and confidence to work the problems in front of you.
Engineering educators who passed both exams and teach engineering
Content teams who may never have taken your exam
Readiness score earned from your performance
Progress bar of videos watched
Adaptive practice targets your weak topics
Fixed syllabus — you guess
Multiple choice, numeric, multi-select, point-and-click — like NCEES
Multiple choice only
Timed mocks with real sections, break, and review screen
Quiz with answers after each question
Step-by-step solutions that teach the method
The right letter and a sentence
Topic-by-topic breakdown, every attempt saved
A percentage
Interactive lessons where you solve, not just watch
Hours of recorded video
Streaks, XP, and ranks built for working engineers
Nothing — that’s on you
Any browser, laptop or phone
Textbooks or desktop-only portals.
Every PE Mentor plan includes the complete method. No add-ons hiding behind the fine print.
Waitlist
Register your interest in upcoming FE and PE exams.
Join the waitlistFAQ
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See the current course catalog for live FE and PE exams. If your exam isn’t open, join the waitlist.
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Manage your plan and billing from your account. For recurring plans, use the billing portal to manage cancellation; review the terms shown for your current plan. One-time plans do not renew automatically.
Learn about our approach and view published team information on the About page. We don’t list unconfirmed biographies or reviewer credentials.
No. PE Mentor is an independent study tool, not an NCEES product. These practice materials are not actual licensing-exam questions.
Yes. For FE prep, study with the current FE Reference Handbook open. For PE prep, use the references and specifications for your particular exam. Find current resources directly at NCEES.
Yes. Use a modern browser on your laptop, tablet or phone. Both light and dark modes are available.
Visit For universities to learn about the study experience and check whether a university contact is currently available. Cohort arrangements are not purchased through this page.