dMAT Electrical Engineering Module: Exam Format & Key Topics

The dMAT has introduced a Battery Science and Technology in Engineering subject module for applicants to RWTH Aachen's MSc in the same field, and Electrical Engineering is one of five disciplines tested. If your undergraduate degree is in EEE, ECE, or a related electrical stream and you have been assigned this module, you need to prepare for the dMAT Electrical Engineering section for your university application. 

This guide covers the dMAT Electrical Engineering Section, including the exact syllabus, exam format, and study preparation tips.

Key Highlights:

• The dMAT Electrical Engineering section is for applicants with a Bachelor’s degree in Electrical Engineering, or a closely related electrical field, applying to RWTH Aachen’s MSc in Battery Science and Technology in Engineering.
• The Electrical Engineering section of the dMAT exam consists of one Basic Task and two Advanced Tasks, covering Fourier Series, resistor networks, and System Analysis.
• Key topics in the dMAT Electrical Engineering section include periodic signals and Fourier Series, Ohm’s law and resistor networks, Laplace transforms, transfer functions, and system stability. 

What is the dMAT Electrical Engineering Section?

The Electrical Engineering section is one of the subject modules tested in the dMAT exam that tests your undergraduate electrical engineering fundamentals as one of five discipline areas inside the dMAT's Battery Science and Technology in Engineering subject module.

dMAT Electrical Engineering Module is designed for RWTH Aachen’s battery-focused MSc, which attracts applicants from electrical engineering, mechanical engineering, physics, chemistry, and computer science. It therefore provides a common assessment framework while allowing candidates to demonstrate knowledge from their respective academic backgrounds

• Duration: You get 90 minutes for the entire dMAT Subject Module, which covers all five disciplines. The 90 minutes is not limited to the Electrical Engineering section.
• Calculator and notes: Calculators and rough notes are not permitted at any point during the exam. Practise solving problems mentally or using the input passage itself for working.
• Guessing: If you are unsure of an answer, it is better to make an educated guess than leave it blank, as the official materials do not specify a penalty for incorrect answers.

dMAT Electrical Engineering Syllabus

The dMAT Electrical Engineering section has one Basic Task and two Advanced Tasks. Each dMAT Electrical Engineering section task, like every dMAT Subject Module task, begins with a short input passage. The passage may contain text, a formula, a diagram, or a worked example. This is followed by single-choice questions with four answer options, of which only one is correct.

Basic Task: The Fourier Series

The Basic Task in the dMAT Electrical Engineering section focuses on Fourier series and periodic signals. A signal is periodic when it repeats after a fixed interval, written as f(t + p) = f(t), and the official materials use the convention p = 2L, so L is always half the period. You should focus on understanding the core concepts and applying the formulas provided in the question.

• Fourier series: Know how periodic signals can be represented as a sum of trigonometric terms. The larger n, the closer the fit. 
• Even and odd functions: Use symmetry to identify whether a function is even or odd. Even functions have no sine terms, while odd functions have no cosine terms.
• Graphs and mean value: Practise identifying periodic signals from graphs and determining the mean value term from the signal's shape.
• Formula application: Focus on applying the formulas provided in the passage rather than trying to memorise or derive the complete Fourier series.

Advanced Task 1: Series and Parallel Resistor Networks

Advanced Task 1 in the dMAT Electrical Engineering exam extends Ohm's law into networks of multiple resistors. The task also covers the voltage divider and current divider formulas, which let you calculate the voltage across, or current through, one specific resistor inside a larger network without solving the whole circuit from first principles.

• Series shortcut: If all resistors in series carry the same value R, the total is simply n × R, where n is the count of resistors.
• Parallel shortcut: If all resistors in parallel carry the same value R, the total is R ÷ n, which drops fast as you add more resistors.
• Voltage divider: The voltage across any one resistor equals the total voltage multiplied by that resistor's share of the total resistance.

Battery packs use exactly this kind of series and parallel resistor logic for cell balancing and pack configuration, which is why this task is included inside a battery-focused module even though the underlying maths is standard undergraduate circuit theory.

Advanced Task 2: System Analysis

The Advanced Task 2 in the dMAT Electrical Engineering section is the most abstract of the three tasks and focuses on control systems and transfer functions. 

• Laplace domain: Convert a differential equation describing a system's behaviour into the Laplace domain to obtain the transfer function G(s).

• Reference transfer function: Understand how the output is related to the desired input.
• Disturbance transfer function: Understand how an external disturbance affects the system output.
• Nyquist plot: Use this graphical method to analyse system stability in the complex number plane.
• Root locus plot: Interpret the movement of system poles and use the plot to assess stability.

Tip: Give this task the largest share of your preparation time if you are weak in Laplace transforms or control theory from your undergraduate coursework. These topics can fade from memory faster than the resistor calculations required in Advanced Task 1.

How to Prepare for the dMAT Electrical Engineering Subject Specific Module?

Preparing for the dMAT Electrical Engineering subject module requires you to combine conceptual understanding with timed problem-solving practice. Focus on the specific techniques used across the Fourier Series, resistor networks, and System Analysis tasks, while using the official g.a.s.t. preparation materials as your primary study resource. 

• Check symmetry first on Fourier questions: Before calculating any coefficient, look at whether the signal is even or odd. This single check can eliminate half the terms in the series and save you time under the 90-minute limit.
• Convert the period to L immediately: Since the convention is p = 2L, write down L as soon as a question states a period, so you are not recalculating it mid-problem.
• Trace circuit topology before applying formulas: For resistor network questions, identify which resistors are in series and which are in parallel before you plug numbers into either formula, since misreading the topology is the most common error on this task type.
• Practise Laplace transforms without notes: Since System Analysis is the task most likely to fade from memory, work through transfer function derivations by hand repeatedly in the weeks before your exam, mirroring the no-notes condition of the real test.

From the Desk of Yocket

For dMAT Electrical Engineering preparation, do not treat the syllabus as a list of formulas to memorise. The exam gives you a passage containing the information needed for each task, so your preparation should focus on recognising the right concept quickly, applying the provided information accurately, and solving questions without relying on a calculator or notes.

Yocket Prep can help you practise with targeted resources, expert insights, and guidance focused on the areas that matter most for the exam. Use these resources to strengthen your concepts, improve your problem-solving speed, and become more comfortable with passage-based questions.