Engineering English
Equivalent Circuit
Electrical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A simplified representation of an electrical machine using ideal components to model its behavior. It allows engineers to calculate voltage, current, and power losses under different operating conditions.
Example in context
“The engineer derived the equivalent circuit of the induction motor to analyze its torque-speed characteristics.”
“Mühendis, tork-hız karakteristiklerini analiz etmek için indüksiyon motorunun eşdeğer devresini türetti.”
Where engineers use it
Used in motor design and fault analysis, the equivalent circuit appears when calculating starting torque, efficiency, and current. Engineers rely on it to predict performance without physical testing.
Synonyms: per-phase equivalent circuit, lumped parameter model
Practice: can you use “Equivalent Circuit” at work?
A motor fails to start and you must use the equivalent circuit to diagnose whether the issue is high rotor resistance or low supply voltage.
Show a model answer
“Draw the equivalent circuit for a three-phase induction motor.”
“Equivalent Circuit” in 21 languages
| English | Equivalent Circuit |
|---|---|
| Turkish | eşdeğer devre |
| French | circuit équivalent |
| German | Ersatzschaltbild |
| Spanish | circuito equivalente |
| Chinese | 等效电路 |
| Arabic | دائرة مكافئة |
| Portuguese | circuito equivalente |
| Russian | эквивалентная схема |
| Japanese | 等価回路 |
| Italian | circuito equivalente |
| Vietnamese | mạch tương đương |
| Hindi | समतुल्य परिपथ |
| Thai | วงจรสมมูล |
| Indonesian | rangkaian ekivalen |
| Korean | 등가 회로 |
| Bengali | সমতুল্য সার্কিট |
| Dutch | equivalent schema |
| Swedish | ekvivalent krets |
| Finnish | sijaiskytkentä |
| Ukrainian | еквівалентна схема |
Frequently asked questions
What does Equivalent Circuit mean in engineering?
A simplified representation of an electrical machine using ideal components to model its behavior. It allows engineers to calculate voltage, current, and power losses under different operating conditions. In Electrical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Equivalent Circuit?
Equivalent Circuit is pronounced /ɪˈkwɪv.ə.lənt ˈsɜː.kɪt/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Equivalent Circuit used in a sentence?
Example from an engineering context: “The engineer derived the equivalent circuit of the induction motor to analyze its torque-speed characteristics.”
This entry is one of 7,806 terms in the Engineering English iOS app — with quizzes, spaced repetition and pronunciation checking.
Get the app on the App Store