L1 week2 Flashcards
Alternating Voltage is a voltage that:
1- Continuously varies in magnitude 2- Periodically reverses in polarity
The sinusoidal waveform (sine wave) is
the fundamental alternating current (ac) and alternating voltage waveform.
Sinusoidal voltages are produced by
ac generators and electronic oscillators.
sinusoidal wave is generated when
a conductor rotates in a constant magnetic field
When the loop is moving perpendicular to the lines of flux ……….. is induced
the maximum voltage
Sine waves are characterized by
the amplitude and period.
The amplitude is
the maximum value of a voltage or current
The period is
the time interval for one complete cycle.
Frequency ( f ) is
the number of cycles that a sine wave completes in one second.
Frequency is measured in
hertz (Hz).
The period and frequency are ………………….. of each other.
reciprocals
f=
1/T
when the conductor is moving parallel to the lines of flux….
No voltage is induced
This is the symbol for
sinusoidal voltage source
