Engineering English
Transformer
Electrical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A static electrical machine that transfers energy between two or more circuits by electromagnetic induction. It changes voltage and current levels while keeping the supply frequency unchanged.
Example in context
“The step-down transformer reduces the distribution voltage to 400 volts before it feeds the workshop lighting and socket circuits.”
“Düşürücü transformatör, atölyenin aydınlatma ve priz devrelerini beslemeden önce dağıtım gerilimini 400 volta indirir.”
Where engineers use it
Engineers meet this term in substation design, distribution network planning, and equipment sizing. Selecting the correct rating, vector group, and impedance determines voltage levels, fault currents, and protection settings throughout an installation.
Practice: can you use “Transformer” at work?
A trainee inspects a 630 kVA distribution unit and must explain how a transformer changes voltage, identify its primary and secondary sides, and estimate the turns ratio from nameplate data.
Show a model answer
“The transformer changes the voltage level between two circuits without changing the frequency.”
“Transformer” in 21 languages
| English | Transformer |
|---|---|
| Turkish | Transformatör |
| French | Transformateur |
| German | Transformator |
| Spanish | Transformador |
| Chinese | 变压器 |
| Arabic | محول كهربائي |
| Portuguese | Transformador |
| Russian | Трансформатор |
| Japanese | 変圧器 |
| Italian | Trasformatore |
| Vietnamese | Máy biến áp |
| Hindi | ट्रांसफार्मर |
| Thai | หม้อแปลงไฟฟ้า |
| Indonesian | Transformator |
| Korean | 변압기 |
| Bengali | ট্রান্সফরমার |
| Dutch | Transformator |
| Swedish | Transformator |
| Finnish | Muuntaja |
| Ukrainian | Трансформатор |
Frequently asked questions
What does Transformer mean in engineering?
A static electrical machine that transfers energy between two or more circuits by electromagnetic induction. It changes voltage and current levels while keeping the supply frequency unchanged. In Electrical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Transformer?
Transformer is pronounced /trænsˈfɔːrmər/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Transformer used in a sentence?
Example from an engineering context: “The step-down transformer reduces the distribution voltage to 400 volts before it feeds the workshop lighting and socket circuits.”
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