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Free Practice Questions for ECE Board Exam

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Key Facts: ECE Board Exam Exam

4

Exam Subjects

PRC TOS

70%

Passing Rating per Subject

PRC

47.33%

Oct 2026 Pass Rate

PRC 2026

RA 9292

Governing Law

Philippines

30%

Top Subject Weight

PRC TOS

2 days

Exam Schedule

PRC

The ECE board exam tests four subjects of 100 items each, weighted as Mathematics 20%, General Engineering and Applied Sciences (GEAS) 20%, Electronics Engineering 30%, and Electronic Systems and Technologies (EST) 30%. RA 9292 requires a rating of at least 70% in each subject, with one removal exam for subjects rated 60% to below 70% when most subjects are passed. In the October 2026 administration, 1,106 of 2,337 examinees passed (47.33%). The exam covers everything from calculus and RA 9292 ethics to circuits, communications, antennas, and fiber optics.

Sample ECE Board Exam Practice Questions

Try these sample questions to review concepts for the ECE Board Exam exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 134+ question experience with AI tutoring.

1In the ECE board exam Mathematics subject, what is the value of the imaginary unit j raised to the fourth power (j^4)?
A.-1
B.j
C.1
D.-j
Explanation: Since j = sqrt(-1), j^2 = -1, j^3 = -j, and j^4 = (j^2)^2 = (-1)^2 = 1. The powers of j cycle with a period of four, returning to 1 every fourth power.
2What is the derivative of f(x) = sin(2x) with respect to x?
A.cos(2x)
B.-2cos(2x)
C.2cos(2x)
D.2sin(2x)
Explanation: Applying the chain rule, the derivative of sin(u) is cos(u) times du/dx. With u = 2x, du/dx = 2, so d/dx[sin(2x)] = 2cos(2x).
3The Laplace transform of the unit step function u(t) is which of the following?
A.1
B.1/s^2
C.1/s
D.s
Explanation: The Laplace transform integrates u(t)e^(-st) from 0 to infinity, giving 1/s for s greater than 0. This is a fundamental transform pair used heavily in circuit and control-system analysis on the ECE exam.
4A 3x3 matrix has a determinant of zero. What does this indicate about the matrix?
A.It is orthogonal
B.It is symmetric
C.It is singular and has no inverse
D.Its eigenvalues are all positive
Explanation: A determinant of zero means the matrix is singular, so its inverse does not exist and its rows or columns are linearly dependent. This is important when solving systems of linear equations, which may then have no unique solution.
5Two dice are rolled. What is the probability that the sum of the two faces equals 7?
A.1/9
B.1/12
C.1/6
D.5/36
Explanation: There are 6 favorable outcomes that sum to 7 (1-6, 2-5, 3-4, 4-3, 5-2, 6-1) out of 36 equally likely outcomes, giving 6/36 = 1/6. A sum of 7 is the most probable result when rolling two fair dice.
6In a designed experiment, what is the variable deliberately changed by the investigator called?
A.Response variable
B.Uncontrolled confounding variable
C.Factor or independent variable
D.Random experimental error
Explanation: A factor, or independent variable, is deliberately varied so its effect on a measured response can be studied. Controlled design, randomization, and replication help separate factor effects from experimental error and confounding.
7What is the general solution form for the first-order linear differential equation dy/dx + Py = Q, where P and Q are functions of x?
A.y = Q/P
B.y = e^(Px)
C.y multiplied by the integrating factor equals the integral of Q times the integrating factor
D.y = integral of (Q - P) dx
Explanation: The standard method multiplies through by the integrating factor e^(integral of P dx), making the left side an exact derivative. Then y times the integrating factor equals the integral of Q times that same integrating factor, plus a constant.
8For the vector field F = 2x ax + 3y ay + 4z az, what is the divergence of F?
A.5
B.7
C.9
D.12
Explanation: The divergence is the sum of the matching partial derivatives: div F = d(2x)/dx + d(3y)/dy + d(4z)/dz = 2 + 3 + 4 = 9.
9What is the magnitude of the complex number 3 + 4j?
A.7
B.12
C.5
D.1
Explanation: The magnitude (modulus) of a + bj is sqrt(a^2 + b^2) = sqrt(3^2 + 4^2) = sqrt(9 + 16) = sqrt(25) = 5. This forms a 3-4-5 right triangle in the complex plane.
10The integral of 1/x dx is equal to which of the following?
A.x^2/2 + C
B.-1/x^2 + C
C.ln|x| + C
D.1/(x^2) + C
Explanation: The integral of 1/x is the natural logarithm of the absolute value of x plus a constant, ln|x| + C. This is the one exception to the power rule, which fails for an exponent of -1.

About the ECE Board Exam Exam

The PRC Electronics Engineer Licensure Examination, also called the ECE board exam, is the objective written board examination for the Registered Electronics Engineer (RECE) under Republic Act No. 9292, the Electronics Engineering Law of 2004. It is administered by the Professional Regulatory Board of Electronics Engineering under the Professional Regulation Commission across four subjects. The exam is distinct from the separate Electronics Technician (RECT) examination and from the higher Professional Electronics Engineer (PECE) assessment.

Exam sponsor: Professional Regulatory Board of Electronics Engineering (PRC). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

400 questions

Time Limit

Two-day examination schedule

Passing Score

70% in each subject; one removal exam for subjects rated 60% to below 70% if most subjects are passed

Exam / Certification Fees

PRC examination fee (verify current amount on prc.gov.ph)

Exam sponsor website

Reported exam pass rate: 47.33%. October 2026 administration: 1,106 of 2,337 examinees passed (PRC) This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20%

Mathematics

Differential and integral calculus, differential equations with Laplace transforms, advanced engineering mathematics (complex numbers, series and transforms, numerical methods), engineering data analysis, vector analysis for electromagnetics, Z-transforms and convolution, and feedback and control systems

20%

General Engineering and Applied Sciences (GEAS)

Chemistry, physics, engineering economics, engineering management, technopreneurship, materials science, computer programming, environmental science and engineering, ECE laws, contracts, ethics, standards and safety under RA 9292, and CAD

30%

Electronics Engineering

DC and AC circuits, electromagnetics, electronic devices and circuits, circuit analysis and design, electronic systems and design, logic circuits and switching theory, microprocessors and microcontrollers, and feedback and control systems

30%

Electronic Systems and Technologies (EST)

Signals and signal processing, principles of communications (noise, AM, FM, radio receivers, pulse and digital modulation), digital communications and multiplexing, transmission lines, wave propagation, antennas, waveguides and fiber optics, electronic systems and design, and data communications

Preparing for the ECE Board Exam Exam

What You Need to Know

  • Passing score: 70% in each subject; one removal exam for subjects rated 60% to below 70% if most subjects are passed
  • Exam length: 400 questions
  • Time limit: Two-day examination schedule
  • Exam / certification fees: PRC examination fee (verify current amount on prc.gov.ph) Official sources

Using Our Practice Resources

  • Work through all 134 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

ECE Board Exam: Suggested Study Strategy

1Prioritize Electronics Engineering and EST, which together carry 60% of the exam weight
2Build a solid mathematics base early since calculus and transforms support every subject
3Memorize key ECE law and ethics provisions of RA 9292 for the GEAS subject
4Master core formulas: Ohm's law, decibels, modulation index, wavelength, and resonance
5Practice communications topics: AM/FM, transmission lines, antennas, and fiber optics
6Drill timed multiple-choice sets to improve pacing across the two-day schedule
7Review semiconductor device fundamentals, amplifier configurations, and digital logic
8Aim for at least 70% in every subject: RA 9292 requires it, and a subject rated 60% to below 70% can be retaken only once, in a removal exam

Frequently Asked Questions

What is the ECE board exam pass rate?

Pass rates vary by administration. In the October 2026 Electronics Engineers Licensure Examination, 1,106 of 2,337 examinees passed (47.33%), according to the Professional Regulation Commission; the March 2026 rate was 61.62%. RA 9292 requires a passing rating of 70% in each subject, and a candidate who passes most subjects but rates 60% to below 70% in the rest may take one removal examination.

What subjects are covered in the ECE board exam?

The exam covers four subjects per the PRC Table of Specifications: Mathematics (20%), General Engineering and Applied Sciences or GEAS (20%), Electronics Engineering (30%), and Electronic Systems and Technologies or EST (30%). Together these span calculus, applied sciences, ECE law, circuits, semiconductor devices, communications, antennas, and fiber optics.

What is the difference between the RECE and PECE?

The Registered Electronics Engineer (RECE or ECE) is earned by passing the objective written board examination covered here. The Professional Electronics Engineer (PECE) is the highest tier under RA 9292: an ECE needs at least seven years of experience (two in responsible charge of significant engineering work), certifications from three PECEs, membership in the accredited professional organization, and an en banc oral interview by the Board instead of a written board exam.

What law governs the ECE board exam?

Republic Act No. 9292, the Electronics Engineering Law of 2004, governs the registration, licensing, and practice of electronics engineers and technicians in the Philippines. It created the Professional Regulatory Board of Electronics Engineering under the PRC, which prepares the syllabi and administers the licensure examinations.

Who is eligible to take the ECE board exam?

Applicants must be Filipino citizens (or qualified reciprocity applicants) of good moral character who hold a Bachelor of Science in Electronics Engineering from a CHED-recognized program and secure PRC eligibility approval. No prior work experience is required for the RECE written examination.

How should I study for the ECE board exam?

Build a strong mathematics foundation first, since calculus, complex numbers, and transforms recur throughout. Then drill the high-weight Electronics Engineering and EST subjects, which together make up 60% of the exam, while reviewing GEAS topics and RA 9292 ethics. Timed practice on multiple-choice questions and past board coverage helps with pacing and recall.