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Does acoustics use trigonometry?
Yes, because all sound waves can be modelled as sine (or cosine) waves, or combinations of sine waves.
Why oly sine waveforms used to represent waveforms?
not only sine, even cosine can be used to represent waveforms. the other trigonometric ratios cannot be used ,as at some points, their numerical value rises to infinity which is impossible for any normal wave with finite energy and amplitude. for example, tangent at any odd no. multiples of 900 becomes infinity. so do all the other trigonometric ratios. only sine and cosine are bounded functions whose values lie between -1 and 1 for any angle this is similar to the behavior of any ordinary wave. so, they are used.
Why do you need sine waves?
There are many physical phenomena that can be modelled by sine waves: Waves in water are an obvious example, Compression and rarefaction in the propagation of sound, Transmission of all electromagnetic radiation, Vibrations of strings in musical instruments, Bodies "bouncing" on a spring. Also, more complicated motion can be modelled by a superposition of many sine waves (using Fourier transforms). This enables complex motions to be studied more easily.
What are the differences between multilevel inverters?
Inverters convert DC power into AC power through waves called either sine waves or modified sine waves. Sine waves are the waves that are typically found in power from a power plant. Modified sine waves are made to simulate sine waves. Inverters with modified sine waves work well for backup power in houses and are much less expensive. Although there are several types of inverters, all standard inverters use only one switch, or in other words, one power circuit. Multilevel inverters are a a source of high power, often used in industrial applications and can use either sine or modified sine waves. Instead of using one converter to convert an AC current into a DC current, a multilevel inverter uses a series of semiconductor power converters (usually two to three) thus generating higher voltage. While with an inverter you would transfer energy with the flip of one switch, with a multilevel inverter you would have to flip several switches, each switch requiring a circuit. These multiple switches and circuits usually make multilevel inverters more expensive than inverters.
Is 208v 3ph the same as 220 1ph?
No, not at all. Single phase power consists of two "hot" conductors whose sine waves are 180 degrees apart. Three phase power has three "hot" conductors whose sine waves are 120 degrees apart. The voltage level has nothing to do with it.
Difference between function generator and signal generator?
A signal generator provides a high-fidelity sine wave signal ranging from low frequencies to many GHz. Attenuation, modulation, and sweeping are typical features of a signal generator.A function generator is a lower-frequency instrument that typically provides sine, square, pulse, triangle and ramp waveforms. Function generators provide these standard functions from DC to a few MHz, and provide large voltage ranges.
In which type of wave are troughs and crests found?
All sine waves both sound and electromagnetic.
Does a pure sine wave exist in nature or is it man made only?
All electromagnetic radiation - including light in space, cosmic microwaves, stellar x-rays are pure sine waves. They existed billions of years before man appeared in the universe!
Why sqare waves are called analog waves?
A square wave is a sum of an infinite number of sine waves (analogue). These sine waves consist of one wave called a FUNDAMENTAL, and all of the other waves are called HARMONICS. The fundamental is the same amplitude and frequency as the square wave. The harmonics are all odd, i.e. mathematically, the first harmonic (which is called the 3rd harmonic) is 1/3 the amplitude and 3 times the frequency of the fundamental. The next harmonic (called the 5th harmonic) is 1/5 the amplitude and 5 times the frequency of the fundamental. And so it goes with the next harmonic (the 7th), followed by the 9th and so on ad infinitum.
Why you need for true RMS multimeter?
RMS mean root mean square not all voltages are pure sine waves so the true RMS can be found by using this type of meter.
Why you use sine wave for ac power supply why not triangle wave or square wave?
AC power comes from an electrical generator, which is a set of stationary coils (the stator) around a rotating magnetic field (the rotor). This configuration produces a sinewave output. We use a sine wave on the power grid because that's the way the electricity is generated, and it is a "natural" thing to do. It's a "pain" to have to convert it to another waveshape. There is also the fact that some nasty harmonics will appear on the power grid if we try to use triangular or square waves. Particularly with a square wave. The electrical loss will be higher, too. See the generator link below. Additionally, the sine wave is the the 'purest' waveform, being the root of all other period waveforms. See Fourier series link below.
What is Sine in Gaelic Sine translated as?
In Irish 'sine' translates as 'nipple, teat'; it also means 'link' as in 'sine de shlabhra', link of chain.With a long mark over the 'i', Sìne is the Scots Gaelic version of "Jean, Jane, Sheena'.
