Electrical Engineering XYZ MCQs
In a rectifier circuit, the diode serves to convert:
- Alternating current to direct current
- Direct current to alternating current
- Both of these
- None of these
Correct answer: 1. Alternating current to direct current
Explanation: A rectifier circuit is used to convert alternating current (AC) into direct current (DC). This is achieved using diodes. Diodes are semiconductor devices that allow current to flow in one direction only. In a rectifier circuit, diodes are arranged in such a way that they permit the flow of current in only one direction, effectively converting the alternating current (which changes direction periodically) into a unidirectional flow, i.e., direct current.
Therefore, the diode in a rectifier circuit serves to convert alternating current to direct current. The other options, such as converting direct current to alternating current or none of these, are incorrect in the context of a rectifier circuit’s function.