SignalPrep
Basic Qualification · B-005 Basic electronics and theory · B-005-007-009

Deux formes d'onde CA ont la même fréquence, mais leurs cycles ne commencent pas au même instant. Quel terme décrit cette différence temporelle?

  1. APhase
  2. BPolarité
  3. CDécalage
  4. DDelta

Correct answer: A — Phase. Question tirée de la banque officielle d'ISDE.

Why

Phase describes the timing difference between two waveforms of the same frequency when their cycles do not start at the same instant. The full explanation — and one for every question — is in Pro.

Practise this section

Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.

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