Extra exam question E5C02
Subelement E5, ELECTRICAL PRINCIPLES· Group E5C
E5C02
How are impedances described in polar coordinates?
- A.By X and R values
- B.By real and imaginary parts
- C.By magnitude and phase angle (correct answer)
- D.By Y and G values
WhyImpedances in polar coordinates are described by magnitude and phase angle. In polar coordinates, an impedance is described by its magnitude and phase angle, a single distance-and-direction pair rather than separate real and imaginary components, answer C. Real and imaginary parts, or R and X values, describe rectangular notation instead, and Y and G values relate to admittance and conductance, not impedance in polar form.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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