Interview Questions Answers.ORG
Interviewer And Interviewee Guide
Interviews
Quizzes
Home
Quizzes
Interviews PC Hardware Interviews:80858086A + (Plus) HardwareA+ and Basic PCBasic ComputerBIOSCD-ROM DriveComputer ArchitectureComputer Architecture And DesignCPU (Central Processing Unit)ECDLElectronicsEmbedded SystemsFloppy DiskHard Disk (HD)Hardware and Software DesignHardware DesignIntel MicroprocessorLaptop Hardware RepairerMicroprocessorMotherboardRAMx86Zip Drive
Copyright © 2018. All Rights Reserved
Electronics Interview Question:
How can we prove that radio waves are sine waves? What makes them sine?
Submitted by: AdministratorFourier says that only a sine wave has no harmonic content. The math works out that if you have any wave shape other than a sign wave, you can break it down into a group of sine waves of different harmonic frequency, phase, and amplitude. All those harmonics go to zero when the wave shape is a pure sine. We can tell that radio waves behave like a sine, you can run them through a narrowband filter, and no energy is lost. Maxwell's equations predict propagation and fields based on a sine wave, and anything other than that propagates as if it is multiple frequencies, which do not propagate energy as well. So mathematically, radio waves work as they measure to work only if you assume they are sine waves.
Submitted by: Administrator
Submitted by: Administrator
Copyright 2007-2024 by Interview Questions Answers .ORG All Rights Reserved.
https://InterviewQuestionsAnswers.ORG.
https://InterviewQuestionsAnswers.ORG.