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# What is the time to complete one cycle of 60 Hz AC?

###### Wiki User

###### April 06, 2010 5:37AM

One cycle takes 1/60th of a second to complete.

## Related Questions

###### Asked in Electronics Engineering, Electrical Engineering, Algebra

### How does time relate to degrees in an AC sine wave?

One cycle of the sine wave is equal to 360 degrees. In US the
frequency of power is typically 60 Hz and hence one cycle is 1/60
of a second. Therefore you can calculate the degrees at any instant
of time. If at zero degrees the voltage amplitude is zero, then at
90 degrees,which is 1/4 cycle, wave is at peak voltage. At 180
degrees it is at 1/2 cycle and zero voltage and then at 270 degrees
it is 3/4 of the cycle and a peak negative voltage. Finally at 360
degrees the cycle is complete and the voltage is again zero.

###### Asked in Electronics Engineering

### When a 60 Hz sinusoidal voltage is applied to the input of a half-wave rectifier what is the output frequency?

The output frequency of the half-wave rectifier will be 60 Hz if
the input is a 60 Hz sine wave.
One cycle of the input will include the positive going and the
negative going portions of the sine wave. The output will have
either the positive going or negative going half of the input wave,
and will have no output during the other half of the input sine
wave when the diode is reverse biased. What that output will look
like on an oscilloscope is half a wave and then a "flat spot" where
there is no output (owing to the diode being reversed biased).
Let's keep going.
The frequency of a signal is the number of cycles of the signal
per second. Further, we know that in a waveform, one cycle occurs
when the wave goes through all of the changes it must go
through to, shall we say, get back to where it started. In the
half-wave output, the signal goes through half of the input wave,
and then the voltage sits at zero. That means that one output cycle
consists of that voltage excursion, and that period during which
the diode is back biased. So the time for one complete cycle of the
output is the same as the time for one complete cycle of the input.
Thus, a 60 Hz input signal (that sine wave) will give us a
half-wave rectified 60 Hz output signal.