BICSI
RCDD · Question #124
RCDD Question #124: Real Exam Question with Answer & Explanation
The correct answer is C. Frequency. Phase difference is the time-based relationship between two waveforms that must share the same frequency for the comparison to be meaningful.
Question
Phase difference is the relationship in time between two waveforms of the same:
Options
- APower
- BVoltage
- CFrequency
- DCurrent
Explanation
Phase difference is the time-based relationship between two waveforms that must share the same frequency for the comparison to be meaningful.
Common mistakes.
- A. Power is a product of voltage and current, not a waveform characteristic that defines the basis for phase comparison between two signals.
- B. Voltage is a quantity that can have a phase, but it is not the shared property that defines phase difference - two waveforms must share the same frequency for phase difference to apply.
- D. Current, like voltage, can have a phase angle, but it is not the fundamental property that must be equal between two waveforms for phase difference to be defined.
Concept tested. Phase difference and frequency relationship in AC waveforms
Reference. https://www.electronics-tutorials.ws/accircuits/phase-difference.html
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