BICSI
RCDD · Question #133
RCDD Question #133: Real Exam Question with Answer & Explanation
The correct answer is B. Rectifier. A rectifier is the electrical device that converts alternating current (AC) to direct current (DC), which is essential for powering DC-based electronics from AC mains.
Question
Which of the following electrical devices is used to convert AC to DC?
Options
- AInverter
- BRectifier
- CTransformer
- DLine filter
Explanation
A rectifier is the electrical device that converts alternating current (AC) to direct current (DC), which is essential for powering DC-based electronics from AC mains.
Common mistakes.
- A. An inverter performs the opposite conversion - it changes DC input into AC output - and is used in UPS output stages and solar power systems.
- C. A transformer changes the voltage level of an AC signal but keeps the output as AC; it cannot convert AC to DC.
- D. A line filter removes electrical noise and harmonic interference from the AC supply but does not change the nature of the current from AC to DC.
Concept tested. AC to DC conversion function of a rectifier
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