Approved Training Organization (ATO) Test 3 Alternating Current (AC) Practice

A subharmonic frequency is best described as what in relation to the fundamental?

A frequency that is a multiple of the fundamental A frequency that is equal to the fundamental A frequency that is a division of the fundamental A frequency that is independent of the fundamental

Correct Answer:

A frequency that is a division of the fundamental

Explanation:

Subharmonics are frequencies that are fractions of the fundamental, such as f0/2, f0/3, and so on. This means a subharmonic is a division (a submultiple) of the fundamental frequency. The other options describe frequencies that are multiples of the fundamental (harmonics), the same as the fundamental, or independent of it, none of which are subharmonics.

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