Why are signals sinusoidal?

Sinusoidal signal is a periodic signal, because the pattern keeps on repeating after one Wavelength as shown in the Figure above. All the power signals in our home, office and industries are AC sinusoidal signals. The frequency (f) in India and British countries is 50 Hz and in American countries it is 60 Hz.

Why are carrier signals always sinusoidal?

During modulation, the message signals are low pass so when it modulates the carrier signal it’s spectrum translates to -fo and fo so the total bandwidth becomes twice the original, this was the case with tonal wave(only single frequency).

Why do we choose a sinusoidal wave form?

Usually we use a sinusoidal wave form to represent a alternating quantity. Why not a cosinusoidal wave or a ramp wave form? In sine wave forms we can indicate the maximum and minimum amplitude and its variation with respect to time.

Why is sinusoidal signal is considered analog?

Speed of data transmission in 4G network of telecom is from 100 mbps to 1 gbps. Analog signal is a continuous signal and digital signal is a discrete signal. A sinusoidal signal is a continuous signal with respect to time. Therefore, sinusoidal signal is a analog signal.

How are sinusoidal signals generated?

Sine and Cosine Waves We can mathematically generate a sinusoidal signal by means of the sine function or the cosine function. These functions operate on angles; for example, sine of 30° equals 0.5, and cosine of 0° equals 1.

How is a sinusoidal waveform generated?

The points on the sinusoidal waveform are obtained by projecting across from the various positions of rotation between 0o and 360o to the ordinate of the waveform that corresponds to the angle, θ and when the wire loop or coil rotates one complete revolution, or 360o, one full waveform is produced.

Why sinusoidal wave shape is insisted for voltage and current?

Ans. Sinusoidal wave shape is insisted for voltages and currents while generating, transmitting and utilizing ac electrical power because it has following advantages. Sinusoidal voltages and currents result in low iron as well as low copper losses in transformers, and ac rotating machines for a given output.