Engineering English
Phasor
Electrical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A complex number representing the magnitude and phase angle of a sinusoidal electrical quantity such as voltage or current. Phasors simplify the analysis of AC circuits by converting time-domain waveforms into frequency-domain vectors.
Example in context
“The engineer drew the phasor diagram to determine the phase difference between the voltage and current in the AC circuit.”
“Mühendis, AC devresindeki voltaj ve akım arasındaki faz farkını belirlemek için fazör diyagramını çizdi.”
Where engineers use it
Phasor is used in AC circuit analysis, power systems, and control theory. Engineers employ phasor diagrams when calculating voltage drops, power flows, or designing filters. Mastery is essential for understanding steady-state sinusoidal behavior.
Synonyms: vector phasor, complex phasor
Practice: can you use “Phasor” at work?
A trainee is given an RLC series circuit and asked to compute the total impedance using phasors. They must draw the phasor diagram and explain the phase angle.
Show a model answer
“Use phasor representation to simplify the sinusoidal steady-state analysis.”
“Phasor” in 21 languages
| English | Phasor |
|---|---|
| Turkish | fazor |
| French | phaseur |
| German | Phasor |
| Spanish | fasor |
| Chinese | 相量 |
| Arabic | فازور |
| Portuguese | fasor |
| Russian | векторная диаграмма |
| Japanese | フェーザ |
| Italian | fasore |
| Vietnamese | vectơ pha |
| Hindi | फेज़र |
| Thai | เฟสเซอร์ |
| Indonesian | fasor |
| Korean | 페이저 |
| Bengali | ফেজর |
| Dutch | fasor |
| Swedish | visare |
| Finnish | osoitin |
| Ukrainian | фазор |
Frequently asked questions
What does Phasor mean in engineering?
A complex number representing the magnitude and phase angle of a sinusoidal electrical quantity such as voltage or current. Phasors simplify the analysis of AC circuits by converting time-domain waveforms into frequency-domain vectors. In Electrical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Phasor?
Phasor is pronounced /ˈfeɪzɔr/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Phasor used in a sentence?
Example from an engineering context: “The engineer drew the phasor diagram to determine the phase difference between the voltage and current in the AC circuit.”
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