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134+ Free ECE Board Exam Practice Questions

Prepare for the PRC Electronics Engineer Licensure Examination exam with instant access — no signup required.

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2026 Statistics

Key Facts: ECE Board Exam Exam

4

Exam Subjects

PRC TOS

70%

Passing Average

PRC

61.62%

Mar 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 weighted as Mathematics 20%, General Engineering and Applied Sciences (GEAS) 20%, Electronics Engineering 30%, and Electronic Systems and Technologies (EST) 30%. Candidates must obtain a 70% weighted general average with no grade below 50%. In the March 2026 administration, 1,692 of 2,746 examinees passed for a 61.62% passing rate. 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 test your ECE Board Exam exam readiness. 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.

Assessment

Question count not published by the exam provider

Time Limit

Two-day examination schedule

Passing Score

70% weighted general average, no grade below 50%

Exam Fee

PRC examination fee (verify current amount on prc.gov.ph) (Professional Regulatory Board of Electronics Engineering (PRC))

ECE Board Exam Exam Content Outline

20%

Mathematics

Algebra, trigonometry, analytic geometry, differential and integral calculus, differential equations, complex numbers, probability and statistics, Laplace, Fourier, Z-transforms, vector analysis

20%

General Engineering and Applied Sciences (GEAS)

Physics, chemistry, materials, mechanics, engineering economics and management, computer programming, ECE laws and ethics under RA 9292

30%

Electronics Engineering

DC and AC circuits, network theorems, electromagnetics, semiconductor devices, amplifiers, op-amps, filters, logic circuits, microprocessors, control systems

30%

Electronic Systems and Technologies (EST)

Communications and modulation, transmission lines, antennas, wave propagation, microwave, fiber optics, satellite, digital and data communications, wireless and broadcasting

How to Pass the ECE Board Exam Exam

What You Need to Know

  • Passing score: 70% weighted general average, no grade below 50%
  • Assessment: Question count not published by the exam provider
  • Time limit: Two-day examination schedule
  • Exam fee: PRC examination fee (verify current amount on prc.gov.ph)

Keys to Passing

  • 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 Study Tips from Top Performers

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
8Track a 70% target per subject since no grade may fall below 50%

Frequently Asked Questions

What is the ECE board exam pass rate?

Pass rates vary by administration. In the March 2026 Electronics Engineer Licensure Examination, 1,692 of 2,746 examinees passed for a 61.62% passing rate, according to the Professional Regulation Commission. Passing requires a 70% weighted general average with no subject grade below 50%.

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, requiring additional qualifying experience and an interview or technical-report assessment rather than the 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.