Which device converts DC power to AC power?

Which device converts DC power to AC power?

• A. Inverter
• B. Transformer
• C. Rectifier
• D. Generator

Answer: (A)

Converting DC to AC requires electronics that switch DC on and off to create an alternating waveform, then shape it into a usable AC form. An inverter does exactly that: it takes direct current and uses switching devices to produce an AC output, which can be filtered to resemble a sine wave. The other devices handle different conversions or processes: a rectifier turns AC into DC, a transformer changes AC voltage levels and cannot operate with a steady DC input, and a generator typically converts mechanical energy into electrical energy (usually AC) rather than transforming DC into AC.

Converting DC to AC requires electronics that switch DC on and off to create an alternating waveform, then shape it into a usable AC form. An inverter does exactly that: it takes direct current and uses switching devices to produce an AC output, which can be filtered to resemble a sine wave. The other devices handle different conversions or processes: a rectifier turns AC into DC, a transformer changes AC voltage levels and cannot operate with a steady DC input, and a generator typically converts mechanical energy into electrical energy (usually AC) rather than transforming DC into AC.