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प्रश्न
Write any two uses of step-down transformer.
लघु उत्तरीय
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उत्तर
- They are used at city substations to reduce the high transmission line voltage down to 220 V for safe use in domestic household supply.
- They are used in AC adapters and chargers for mobile phones, laptops, and radios to step down the standard 220 V household supply to low safe voltages.
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