Question 147Electricity & Electronics - Assistant Engineer

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As shown in the illustrated harmonic analysis diagram, which figure represents the fundamental (or first harmonic)? Illustration EL-0163

Diagram for USCG Electrical Assistant: As shown in the illustrated harmonic analysis diagram, which figure represents...
AA
BB
CC
DD
AI Explanation

The correct answer is B. The fundamental or first harmonic in the harmonic analysis diagram shown in Illustration EL-0163 is represented by figure B. This is because the fundamental harmonic corresponds to the lowest frequency or longest wavelength component of the periodic waveform. In the diagram, figure B depicts the fundamental or first harmonic, while the other figures (A, C, and D) represent higher-order harmonics with shorter wavelengths. The other options are incorrect because they do not depict the fundamental or first harmonic of the waveform.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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