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A chopper

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A chopper Answer: converts constant voltage dc into variable voltage dc directly

A chopper is a dc-dc converter. It converts a fixed dc voltage into a variable dc voltage.

Question context

This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.