Yes, sine wave is AC.
Normally we call it a 'signal generator' but it is also an AC voltage generator. Amplitude and frequency are adjustable.
Function generators may also have other kinds of waveforms like triangle or square, which are alternating but not 'pure' AC. Pure AC is sine.
Normally we call it a 'signal generator' but it is also an AC voltage generator. Amplitude and frequency are adjustable.
Function generators may also have other kinds of waveforms like triangle or square, which are alternating but not 'pure' AC. Pure AC is sine.