Suppose a sine wave of the form y = A*sin(k) with
It's typical of a sine wave that it's periodic, which means the function y repeats itself after a certain period. This period is equal to 2*pi or 360°, for example:
for k = pi/2, 5*pi/2, 9*pi/2, ... the value of y will be the same and equal to A (notice that 5*pi/2 = pi/2 + 2*pi and 9*pi/2 = 5*pi/2 + 2*pi)
In physics it's a more common practice to write a sine wave as y = A*sin(omega*t) with omega the angular frequency specified in radians/s (omega refers to the Greek letter) and t the time specified in seconds.
Now, when you want to calculate the frequency f of a sine wave (which is not equal to the angular frequency) or in other words the number of complete cycles that occur per second (specified in cycle/s or s-1 or Hz), you need to know the time T required to complete one full cycle (specified in s/cycle or just s or Hz-1). The frequency f is then equal to 1/T.
Knowing omega you can calculate the frequency in a different and more common way:
since the sine wave is periodic and after a time T one cycle has been completed (thus one period), it follows that omega*T = 2*pi for the function y to have the same value after one period (the function y having the same value is equal to completing one cycle).
Let's rearrange this formula by bringing 2*pi to the left and T to the right, so we get:
omega/(2*pi) = 1/T and since 1/T = f we finally get:
f = omega / (2*pi)The sine wave at low frequency is unstable because it can create strong currents that nobody can stop them from
we cannot use transformer because transformer cannot change frequency . . .
The phase angle varies from 0 to 360 degrees as the wave cycles.
Should be a sine ( or cosine) wave.
The sine wave represents 360 degrees or a full circle. As the satellite revolves 360 degrees around the earth in its orbit this is how it is represented on a flat surface.
The difference is in sine wave generation algorithm. In HI freq - it is 30kHz signal, modulated by 50Hz.
here is the formula modulation index=peak freq deviation/operating freq. frm this we can calculate freq dev
i dont know,,,give me ans
By shifting the sine wave by 45 degrees.
A sine wave is the graph of y = sin(x). It demonstrates to cyclic nature of the sine function.
The voice is not a sine wave.
a phase shifted sine wave of a different amplitude.
cos wave
A sine wave has no harmonics. It only has a fundamental, so the value of the 2nd, 3rd, and 12th harmonics of a sine wave is zero.
It's called a sine wave because the waveform can be reproduced as a graph of the sine or cosine functions sin(x) or cos (x).
The sine wave, with its repeating pattern, can represent a single frequency with no harmonics.
The differential of the sine function is the cosine function while the differential of the cosine function is the negative of the sine function.