Also known as: hd.
HD stands for various terms. Discover the full forms, meanings, and possible interpretations of HD across different fields and industries.
Condition associated with the critical speed of the shaft in a turbine. The presence of frequencies in the output of a device that are not present in the input signal, and are multiples of components of the input signal. Clipping is a common cause but other nonlinearities can also introduce harmonics. A sinusoidal component of the voltage that is a multiple of the fundamental wave frequency.
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