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Comm Diss 311-page4 - 20. 21. 22. 23.

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20. The period of a sinewave with a frequency of 200 Hz is 5 msec. 21. If two sinewaves have the same peak amplitude and same frequency they are necessarily identical waveforms. 22. A sine wave that starts at 0 amplitude must have 0‐degree starting phase. 23. A square wave and a triangle wave contain the same spectral components and differ only in the rate of fall‐off in amplitude of the components with increasing frequency. 24. A square wave is composed of both odd and even harmonics. 25. A sawtooth wave is composed of both odd and even harmonics. 26. If the fundamental frequency of a wave is 300 Hz and the next three frequencies are 900 Hz, 1500 Hz, and 2100 Hz it is undoubtedly going to be a triangle wave. 27. A complex periodic wave with a fundamental frequency of 400 Hz will repeat itself every 1 msec. 28. A complex periodic wave with a fundamental frequency of 400 Hz could have
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  • Fall '11
  • STAFF
  • 300Hz. 32.Theamplitudespectrumofanaperiodicwaveappearsasaseriesofvertical linesbeginningatthefundamentalfrequency, 20.Theperiodofasinewavewithafrequencyof200Hzis5msec. 21.Iftwosinewaveshavethesamepeakamplitudeandsamefrequencytheyare necessarilyidenticalwaveforms

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