Multiples of the basic frequency of an electrical waveform are called:

The correct answer is C. Harmonics. Harmonics are frequencies that are integer multiples of a fundamental (base) frequency. For example, if the fundamental frequency is 60 Hz (standard U.S. AC power), the 2nd harmonic is 120 Hz, the 3rd is 180 Hz, and so on. Harmonics are a major concern in power quality and…

Bonding, Grounding and Electrical Protection

Question

Options

ATransients
BNoise inductions
CHarmonics
DRandom frequency variations

How the community answered

(60 responses)

A
15% (9)
B
10% (6)
C
70% (42)
D
5% (3)

Explanation

Harmonics are frequencies that are integer multiples of a fundamental (base) frequency. For example, if the fundamental frequency is 60 Hz (standard U.S. AC power), the 2nd harmonic is 120 Hz, the 3rd is 180 Hz, and so on. Harmonics are a major concern in power quality and telecommunications because they can cause overheating, equipment damage, and signal interference. Transients are brief voltage spikes, noise inductions are electromagnetic interference from external sources, and random frequency variations are instabilities in the supply - none of these describe harmonic multiples.

Topics

#harmonics#electrical waveform#frequency multiples

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