PE ECC Exam: Topics, Weights, and Study Plan

The PE Electrical and Computer: Electronics, Controls, and Communications exam, usually shortened to PE ECC, is one of the focused PE Electrical and Computer exams. It blends classic electronics, analog and digital control systems, instrumentation, signal processing, electromagnetics and fiber optics, and communications into a single 85-question exam. Because it is brand new for April 2026, there is very little study material written specifically for it yet, so the most reliable plan is to study straight from the official topic weights.

Practice Coverage by Topic

The weights above come from the NCEES specification. The table below is ours: how many questions our PE ECC bank actually carries for each official topic, how many distinct subtopics they cover, and what share are rated hard.

Official topic	NCEES questions	Practice questions	Per exam question	Subtopics	Rated hard
Circuit Analysis and Design	10–15	92	7.4	82	30%
Measurement and Instrumentation	5–8	53	8.2	45	32%
Safety and Reliability	5–8	44	6.8	37	41%
Signal Processing	5–8	53	8.2	46	38%
Digital Systems	7–11	61	6.8	47	39%
Electromagnetics and Fiber Optics	5–8	52	8	46	42%
Electronic Components	6–9	61	8.1	56	46%
Electronics Circuits	7–11	67	7.4	57	43%
Analog and Digital Control Systems	8–12	73	7.3	64	37%
Communication Techniques	4–6	42	8.4	33	43%
Noise and Interference	4–6	41	8.2	34	54%
Communications Systems	4–6	42	8.4	35	43%

Circuit Analysis and Design is the largest topic at 10–15 questions. Safety and Reliability and Digital Systems have the thinnest coverage relative to weight, at 6.8 practice questions per exam question. About 38% of our ECC questions are alternate-format — drag-and-drop, point-and-click, and fill-in-the-blank — against 10–22% in every other discipline we cover. That reflects when this bank was built rather than a prediction of how many you will meet, so treat it as extra rehearsal with the formats.

Counts are from the live PE ECC bank (681 questions) as of 2026-10-07, matched to the official topic names in the current NCEES specification. Difficulty ratings are ours, not NCEES.

Worked Examples

Four problems from the highest-weight ECC topics - circuit analysis, control, digital timing and op-amp design - each worked through: the setup, the arithmetic, the calculator keystrokes, and the reference section the relation sits in.

Example 1 of 4Circuit Analysis and DesignRC High-Pass Magnitude

A first-order RC high-pass filter has cutoff frequency 200 Hz. At an input frequency of 2.0 kHz, the magnitude ratio |V_out/V_in| is most nearly:

1. A. 0.995
2. B. 0.707
3. C. 0.100
4. D. 0.010

Show the answer and worked solution

Answer: A. 0.995

Worked solution

1. Step 1: Normalised frequency: r = f/f_c = 2000/200 = 10.
2. Step 2: |V_out/V_in| = r/√(1+r²) = 10/√(101) = 0.995. Well above cutoff a high-pass approaches unity, which is the sense check.

Why other options are wrong: Option B (0.707) is the value at cutoff, where r = 1. Option C (0.100) applies the low-pass relation 1/√(1+r²) instead, which at r = 10 gives 0.0995. Option D (0.010) squares that.

On the TI-36X Pro:

Frequency ratio: 2000 ÷ 200 enter 10. Magnitude: 10 ÷ √(1 + 10 x²) enter 0.995.

Reference lane: Circuit Analysis and Design > Filters

Example 2 of 4Analog and Digital Control SystemsRamp Tracking Error

A unity-feedback type-1 control system has velocity error constant Kv = 25 s^-1. The steady-state error to a unit ramp is most nearly:

1. A. 25
2. B. 5.0
3. C. 0
4. D. 0.040

Show the answer and worked solution

Answer: D. 0.040

Worked solution

1. Step 1: The input is a unit ramp, and a type-1 system tracks a ramp with finite error.
2. Step 2: e_ss = 1/K_v = 1/25 = 0.040.

Why other options are wrong: Option A (25) reports K_v itself rather than its reciprocal. Option B (5.0) is neither K_v nor 1/K_v. Option C (0) is the ramp error of a type-2 system, or the step error of this one; a type-1 system tracks a ramp with a finite offset, which is the whole point of the question.

On the TI-36X Pro:

Ramp error: 1 ÷ 25 enter 0.040.

Reference lane: Analog and Digital Control Systems > Steady-State Error

Example 3 of 4Digital SystemsSynchronous Timing

A synchronous path has clock-to-Q delay 1 ns, combinational delay 8 ns, and setup time 2 ns. Ignoring skew and jitter, the maximum clock frequency is most nearly:

1. A. 125 MHz
2. B. 90.9 MHz
3. C. 11 MHz
4. D. 1.0 GHz

Show the answer and worked solution

Answer: B. 90.9 MHz

Worked solution

1. Step 1: Minimum period is the sum of all three: 1 + 8 + 2 = 11 ns.
2. Step 2: f_max = 1/11 ns = 90.9 MHz.

Why other options are wrong: Option A (125 MHz) is 1/8 ns, counting only the combinational delay and dropping both the clock-to-Q and the setup time. Option C (11 MHz) reads the 11 ns period straight off as a frequency. Option D (1.0 GHz) is 1/1 ns, the clock-to-Q delay alone.

On the TI-36X Pro:

Minimum period: 1 + 8 + 2 enter 11 ns. Frequency: 1 ÷ 11E-9 enter 90.9 MHz.

Reference lane: Digital Systems > Timing Analysis

Example 4 of 4Electronics CircuitsInverting Amplifier Gain

An inverting op-amp stage uses R_in=11 kΩ, R_f=33 kΩ, and V_in=0.40 V. The output drives an ADC with a 1.0 V magnitude limit. Determine the ideal output and limit status.

1. A. -0.13 V; below the ADC limit
2. B. +1.20 V; exceeds the ADC limit
3. C. -1.00 V; exactly at the ADC limit
4. D. -1.20 V; exceeds the ADC limit by 0.20 V

Show the answer and worked solution

Answer: D. -1.20 V; exceeds the ADC limit by 0.20 V

Worked solution

1. Step 1: Compute the resistor ratio.
2. Step 2: R_f/R_in=33/11=3.
3. Step 3: Apply the inverting sign: A_v=-3.
4. Step 4: Compute output: V_o=-3(0.40)=-1.20 V.
5. Step 5: Compare magnitude with the ADC limit: 1.20-1.0=0.20 V, so the limit is exceeded.

Why other options are wrong: A uses reciprocal gain, B misses inversion, and C reports the limit instead of the output.

On the TI-36X Pro:

33 ÷ 11 enter 3, apply inverting sign. -3 × 0.40 enter -1.20 V. 1.20 - 1.0 enter 0.20 V over limit.

Reference lane: Electronics Circuits > Operational Amplifiers

These are PE ECC practice questions from our bank, not official NCEES items. Keystrokes are for the TI-36X Pro; the Casio fx-115ES PLUS differs in the memory and solver keys. Reference lanes name the topic to open in your exam’s NCEES PE reference handbook or in the design standards supplied with it; they are study lanes, not handbook section numbers. Confirm the handbook and code editions for your exam date in MyNCEES.

What Is the PE ECC Exam?

PE ECC certifies depth on the electronics, controls, and communications side of electrical and computer engineering. It is not the same exam as PE Power (which leans on the NEC and power-system codes) or PE Computer Engineering (which leans on architecture, software, and networks). If your work involves analog and digital circuit design, embedded and control systems, instrumentation, RF and communications, or signal processing, ECC is usually the right fit. Passing a PE exam, combined with your state's experience requirement, is the final step to a Professional Engineer license.

What Changed in April 2026?

NCEES offers the Electrical and Computer discipline as separate, focused exams rather than one broad test. Electronics, Controls, and Communications is the focused exam for candidates in that lane, effective beginning with the April 2026 administration. Two practical consequences for your prep:

• Study from the new blueprint, not old "PE Electrical and Computer" material. Older review books and question sets written for the broad exam will not match the current 12-topic ECC weighting.
• First national pass-rate data is now in. The NCEES July 2026 table reports the first ECC cohort at 63% first-time and 52% repeat, encouraging for a brand-new exam. It is still young with a modest examinee population, so treat your own topic coverage and timed-practice scores as the primary signal alongside that early national figure.

Because so little ECC-specific material exists yet, candidates who build their plan directly around the official topic weights below have a real advantage.

Official PE ECC Topic Weights (April 2026)

These are the 12 official topics and their question-count ranges from the NCEES specification. The percentage column is each topic's share of the 85-question exam (rounded), and "Priority" groups the topics by how much exam weight they carry.

Ranges are set by NCEES; the exact number of questions per topic varies by form. Use the ranges to budget study time, not to predict an exact count.

Highest-Return Topics

The four High-priority topics, Circuit Analysis and Design, Analog and Digital Control Systems, Digital Systems, and Electronics Circuits, carry 32–49 of the 85 questions (roughly 40–55%). If your study time is limited, these are the highest-return areas:

• Circuit Analysis and Design (10–15): DC/AC analysis, phasors and impedance, transient (RC/RL) response, Thevenin/Norton equivalents, resonance, and op-amp configurations. This is the single largest topic; make it automatic.
• Analog and Digital Control Systems (8–12): closed-loop transfer functions, stability (Routh-Hurwitz, gain/phase margin, root locus), time-response metrics (settling time, percent overshoot), and sampled/z-domain control.
• Digital Systems (7–11): Boolean logic and minimization, combinational vs. sequential design, flip-flops and state machines, setup/hold timing and slack, and basic embedded/PLC logic.
• Electronics Circuits (7–11): small-signal models, gain and bandwidth, active filters, comparators, rectifiers and power supplies, and thermal/heat-sink limits.

The Medium tier (Electronic Components, Measurement & Instrumentation, Safety & Reliability, Signal Processing, Electromagnetics & Fiber Optics) adds another large block, and the three Foundational communications topics round out the exam. Don't skip them, but earn your high-tier points first.

A 16-Week PE ECC Study Plan

Budget about 200 hours: hand-checked study-hour reports from 116 PE passers (2024–2026) put the median there. PE ECC supplies no design codes, only its reference handbook. The next exam date is April 14, 2027 (NCEES Examinee Guide, May 2026), so count back from it: at about 12–13 hours a week, the 16-week version below starts in late December 2026. Front-load the high-weight topics:

1. Week 1: Diagnose and set up: a short placement diagnostic, 10-minute warm-ups with the reference handbook, and calculator practice for complex numbers and scientific notation.
2. Weeks 2–6: High-tier core: Circuit Analysis & Design, Electronics Circuits, Digital Systems, and Control Systems, weakest first according to the diagnostic. A 90-minute session holds about 6 problems, or 3 Hard ones.
3. Week 7: First full simulation: 85 questions on the exam clock (about 40% of the way through), then review: about 13–14 hours in all.
4. Weeks 8–9: Medium tier and communications: Electronic Components, Measurement & Instrumentation, Signal Processing, Electromagnetics & Fiber Optics, and Safety & Reliability; then Communication Techniques, Noise & Interference, and Communications Systems (link budgets, noise figure, modulation, Shannon capacity). Hold about 20% of each topic’s time for 2–3 spaced revisits.
5. Weeks 10–13: Mixed timed practice: time-boxed sets with the electronic reference open, about a quarter of attempts re-working earlier misses, and a second full simulation. Rehearse classifying each prompt into its topic lane before you search.
6. Weeks 14–16: Hard sets, final simulation, taper: Hard and challenge sets on your weakest topics, a final full simulation about 7 days before the exam, then 3 days of light review with no new material.

Practice with the reference open from day one. On a closed-book electronic-reference exam, knowing where a formula lives is as valuable as knowing the formula. Our companion PE ECC reference-navigation guide drills exactly that.

Test-Day Strategy and Common Mistakes

With 85 questions in an 8.5-hour testing window, you average roughly 6 minutes per question; some take 2 minutes, others 10. On a brand-new exam with limited published pass-rate history, disciplined pacing and clean setup matter even more.

What to do on test day

• Prioritize by weight. Score the high-tier topics first: Circuit Analysis, Analog & Digital Control Systems, Digital Systems, and Electronics Circuits are 40–55% of the exam.
• Work in passes. First pass: bank every question you can solve confidently in a few minutes; flag long calculations and unfamiliar lookups. Second pass: spend the remaining time on the flagged problems. Never leave a blank; a guess is 25%.
• Use the scheduled break. Eat, hydrate, and reset; second-half fatigue errors are preventable.
• Draw the model before you compute. Sketch the circuit, the measurement chain (sensor → conditioning → ADC), the timing path, the control loop, or the link. Most ECC traps are setup errors, not arithmetic.
• Master one approved calculator. Practice your equation solver, complex-number mode, and matrix entry on a TI-36X Pro or Casio fx-115/991 until it is automatic. See our calculator guide.

The most common mistakes to avoid

1. Mixing dB and linear. The single biggest ECC error is noise figure, gain, and link-budget problems that mix decibel and linear arithmetic. Keep them in separate steps and convert deliberately.
2. Op-amp configuration and sign errors. Inverting vs. non-inverting gain, the virtual-ground assumption, and the feedback sign trip people up. Identify the topology before applying a gain formula.
3. Confusing open-loop and closed-loop in control problems. Stability lives in the closed-loop characteristic equation; check gain/phase margin and pole locations, not the open-loop plant alone.
4. Sampling and Nyquist slips. Forgetting the Nyquist criterion, mis-spacing DFT bins, or ignoring aliasing before the ADC are common signal-processing traps.
5. Cascade noise and gain errors. Use the Friis relation for a multi-stage receiver; the first stage dominates the noise figure, so don't add stage noise figures in dB.
6. Bit rate vs. symbol rate vs. coded bit rate. In communications problems, keep information rate, FEC code rate, and bits-per-symbol straight (e.g., QPSK carries 2 coded bits/symbol).
7. Slow reference navigation. The exam is closed-book with an electronic reference. Practice classifying each prompt into its topic lane and searching with specific terms so you're not hunting under time pressure.

PE ECC Practice Questions

The fastest way to find your weak lanes is to work real ECC problems with full solutions. Our free set gives 20 exam-style PE ECC questions, multiple-choice plus alternate item types, with step-by-step solutions and calculator steps, scored by topic so you can see where to focus.

Frequently Asked Questions

Disclaimer: This guide is an independent educational resource and is not affiliated with, endorsed by, or sponsored by NCEES. The "PE" exam and "NCEES" are trademarks of the National Council of Examiners for Engineering and Surveying. Exam specifications and reference materials can change; always refer to the official NCEES website and your MyNCEES account for current exam information.