Comm Diss 311-page8

Comm Diss 311-page8 -...

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Unformatted text preview: CommDis311TrueFalsePracticeTestforExam1. 1.Allotherthingsbeingequal,higherdensityofmoleculesisassociatedwithhigher pressure.(Yep) 2.Thehighpressurephaseofawaveformistherarefactionphase. (Nope,condensationphase) 3.Thelowpressurephaseofawaveformisknownasthespectralphase. (Nope,rarefactionphase) 4.Themoleculesofairmovebackandforthinthesamedirectionthatthesound waveistraveling.(Yep) 5.Themoleculesofairtravelfromthesourceofthesoundtothereceiverofsound. (Nope,theyvibratemoreorlessinplace,onlythedisturbancemoves) 6.Soundtravelsfasterthanairthanitdoesinsolids. (Nope,muchfasterinthelesselasticsystem). 7.Aplotofamplitudeovertimeisknownasawaveform. (Yep) 8.Aplotoftheamplitudeasfrequencyisknownastheamplitudespectrum. (Yep) 9.Anysoundwaveformcanbecomposedbyaddingtrianglewavestogether. (Nope,sinewavesarethebuildingblocks) 10.Thebreakingdownofasinewaveintoitscomponentsinewavesiscalled Fourieranalysis.(Yep) 11.Aplotofstartingphaseasafunctionoffrequencyiscalledthephasespectrum. (Yep) 12.Thepeakamplitudeofawaveformisonefourthofthepeaktopeakamplitude. (No,onehalf) 13.Thermsamplitudestandsforrootmeansquare.(Yep) 14.Thermsamplitudeofasinewaveis.707xthepeakamplitude.(Yep) 15.Thepeakamplitudeofasinewaveissquareroot(2)xthermsamplitude.(Yep) ...
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