NCEES Study Guide 2026
Everything you need to pass the NCEES exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 NCEES Exam Format at a Glance
📚 NCEES Topics to Study (36)
✍️ Sample NCEES Questions & Answers
1. In the NCEES PE Chemical exam, what is the purpose of 'layer of protection analysis (LOPA)' in process safety?
LOPA evaluates each independent protection layer (IPL) and their probability of failure on demand to determine if the combination of safeguards reduces risk to an acceptable level.
2. In NCEES PE Electrical problems, the full-load efficiency of a transformer is calculated as:
Transformer efficiency η = Pout/(Pout + Total losses) = Pout/(Pout + P_core + P_copper).
3. In the NCEES PE Environmental exam, which metric is used to design disinfection systems using the CT concept?
CT (concentration × time) is the fundamental design metric for chemical disinfection; regulators specify CT values (in mg/L·min) required to achieve target log-inactivation of Giardia, Cryptosporidium, and viruses.
4. Which NCEES PE Structural topic involves checking that a retaining wall does not overturn about its toe?
The overturning stability check ensures the stabilizing moment from wall weight exceeds the overturning moment from retained soil pressure.
5. In NCEES PE Electrical practice, the resonant frequency of a series RLC circuit is:
Resonant frequency f₀ = 1/(2π√LC): at resonance, inductive and capacitive reactances cancel.
6. On the NCEES PE Electrical exam, the three-phase apparent power for a balanced system is:
Three-phase apparent power S = √3 × VL × IL, where VL and IL are line voltage and line current respectively.