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Electronics Engineering (ECE) Board Exam 2027 Reviewer & Mock Exam Questions: Free Test

Mariano Luiz King

Mariano Luiz King · PrepPH Founder

Free Electronics Engineering (ECE) Board Exam reviewer with mock questions from across its 4 subjects. Try the free sample questions below and read the full explanation for each. No sign-up needed.

Free Electronics Engineering (ECE) Board Exam reviewer: mock questions

Questions from across the subtests, picked from core topics. Pick an answer to see whether you got it right, along with the full explanation.

  1. Question 1
    Mathematics

    Find the derivative of y = sin(3x).

    Not quite. The answer is: y' = 3cos(3x)

    By the chain rule, ddxsin⁡(3x)=cos⁡(3x)×3=3cos⁡(3x)\frac{d}{dx}\sin(3x) = \cos(3x)\times 3 = 3\cos(3x).

  2. Question 2
    Mathematics

    Find the Laplace transform of f(t) = cos(2t).

    Not quite. The answer is: s / (s² + 4)

    The standard Laplace transform pair for cosine is L{cos⁡(at)}=ss2+a2\mathcal{L}\{\cos(at)\} = \frac{s}{s^2+a^2}; with a=2a=2, this gives ss2+4\frac{s}{s^2+4}.

  3. Question 3
    General Engineering and Applied Sciences (GEAS)

    Find the future worth of ₱20,000 invested for 3 years at 10% compounded annually.

    Not quite. The answer is: ₱26,620

    FW=20000(1.10)3=20000(1.331)=₱26,620FW = 20000(1.10)^3 = 20000(1.331) = ₱26{,}620.

  4. Question 4
    Electronics Engineering

    An inverting op-amp has Rf = 100 kΩ, Rin = 10 kΩ. Find the voltage gain.

    Not quite. The answer is: -10

    Av=−RfRin=−10010=−10A_v = -\frac{R_f}{R_{in}} = -\frac{100}{10} = -10.

  5. Question 5
    Electronics Engineering

    Find the cutoff frequency of an RC low-pass filter with R = 1 kΩ, C = 0.1 μF.

    Not quite. The answer is: 1591.5 Hz

    fc=12π(1000)(0.1×10−6)=1591.5f_c = \frac{1}{2\pi(1000)(0.1\times10^{-6})} = 1591.5 Hz.

  6. Question 6
    Electronics Systems and Technologies (EST)

    Find the wavelength of a 300 MHz signal in free space (c = 3×10⁸ m/s).

    Not quite. The answer is: 1 m

    λ=c/f=(3×108)/(3×108)=1\lambda = c/f = (3\times10^8)/(3\times10^8) = 1 m.

  7. Question 7
    Electronics Systems and Technologies (EST)

    A 50 Ω line is terminated in a 100 Ω load. Find the reflection coefficient and VSWR.

    Not quite. The answer is: Γ = 0.333, VSWR = 2.0

    Γ=100−50100+50=0.333\Gamma = \frac{100-50}{100+50} = 0.333; VSWR=1+0.3331−0.333=2.0VSWR = \frac{1+0.333}{1-0.333} = 2.0.

  8. Question 8
    Electronics Systems and Technologies (EST)

    Find the channel capacity of a 3 kHz telephone channel with SNR = 1000.

    Not quite. The answer is: ≈29,900 bps

    C=3000log⁡2(1001)≈3000(9.97)≈29,900C = 3000\log_2(1001) \approx 3000(9.97) \approx 29{,}900 bps.

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Electronics Engineering (ECE) Board Exam reviewer FAQ

What subjects are on the Electronics Engineering (ECE) Board Exam?

The Electronics Engineering (ECE) Board Exam covers 4 subjects: Mathematics, General Engineering and Applied Sciences (GEAS), Electronics Engineering, and Electronics Systems and Technologies (EST). Each subject has its own weight in your overall result.

How are the Electronics Engineering (ECE) Board Exam subjects weighted?

Using the PRC weighting, Electronics Engineering carries the largest share at 30%. The full breakdown is Mathematics (20%), General Engineering and Applied Sciences (GEAS) (20%), Electronics Engineering (30%), and Electronics Systems and Technologies (EST) (30%).

How should I prioritize my Electronics Engineering (ECE) Board Exam review?

Start with the heaviest subject, Electronics Engineering, but don't ignore the others, since every subject counts toward your result. Practice with questions that explain the answer so you learn the reasoning, and track which topics you keep missing.

Where can I find the official Electronics Engineering (ECE) Board Exam schedule and requirements?

Check the Professional Regulation Commission (PRC) website at prc.gov.ph and your Board’s announcements. Schedules, requirements, and rules can change, so confirm the details there before you apply.

Do laws and regulations change on the Electronics Engineering (ECE) Board Exam?

They can. Some topics, such as laws, codes, and rates, get amended over time, so check them against the latest official issuances before the exam instead of relying on any single reviewer, including this one.

Can I practice Electronics Engineering (ECE) Board Exam questions for free on prepPH?

Yes. The sample questions on this page are free to try without an account. prepPH also has a free plan, and a Premium plan that unlocks unlimited flashcards and weak-topic breakdowns.

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