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22-03-2020
Engineering

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A pulse waveform with a frequency of 20 kHz is applied to the input of a counter. During 40 ms, how many pulses are counted?

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22-03-2020

Answer:

800 pulses

Explanation:

We have to convert everything to compatible units.

20kHz = 20e3 Hz

40 ms = 40e-3 s

Hz = 1/s => 1/20e3 s

[tex]\frac{40\times10^-3 s}{\frac{1}{20\times10^3} } = 800[/tex] pulses

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