Engine 2014: Electricity

1. A It merely provides a conducting path between the bridge rectifier output to the controlled inverter input with no other purpose.
2. B It is an inductor coil that smoothes out the DC current flow outputting from the bridge rectifier on the way to the controlled inverter input.
3. C It converts the bridge rectifier AC output to the DC required for input to the controlled inverter.
4. D It controls the gate trigger pulses to the controlled inverter, thus controlling the output frequency.

Tip: press A-D to answer