Click the Exhibit button. In the exhibit, which type of power problem is illustrated?

The correct answer is D. Harmonic distortion. Harmonic distortion is identified by an AC waveform that appears jagged, irregular, or non-sinusoidal - the exhibit likely shows a waveform with multiple overlapping frequencies riding on the fundamental 60Hz signal, creating a distorted shape rather than a smooth sine wave. DC…

Power Systems in the Data Center

Question

Click the Exhibit button.
In the exhibit, which type of power problem is illustrated?

Options

ADC offset
BOvervoltage
CUndervoltage
DHarmonic distortion

How the community answered

(49 responses)

A
14% (7)
B
10% (5)
C
4% (2)
D
71% (35)

Explanation

Harmonic distortion is identified by an AC waveform that appears jagged, irregular, or non-sinusoidal - the exhibit likely shows a waveform with multiple overlapping frequencies riding on the fundamental 60Hz signal, creating a distorted shape rather than a smooth sine wave. DC offset would appear as a waveform shifted above or below the zero-voltage baseline, not a shape distortion. Overvoltage and undervoltage both preserve the smooth sine wave shape but differ only in amplitude - overvoltage exceeds the normal peak voltage, while undervoltage falls below it. Neither of those alters the shape of the waveform the way harmonics do.

Memory tip: Think of harmonic distortion as a "bumpy ride" - the wave loses its smooth curve because extra frequencies are hitching along with the fundamental frequency.

Topics

#harmonic distortion#waveform analysis#power quality

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