Engine 2014: Electricity

1. A The transformer removes the DC component from the varying DC input to produce an AC output that is in phase with the AC component input.
2. B The transformer removes the DC component from the varying DC input to produce an AC output that leads the AC component input by 90 electrical degrees.
3. C The transformer removes the DC component from the varying DC input to produce an AC output that lags the AC component input by 90 electrical degrees.
4. D The transformer removes the DC component from the varying DC input to produce an AC output that lags the AC component input by 180 electrical degrees.

Tip: press A-D to answer