Correct Answer
an Oceanic phenomenon
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an Oceanic phenomenon
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of
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Humid sub-tropical climate with dry winter (Cwg)
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10
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Banish
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Lungs
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Kerala
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Article 330 of the constitution of India
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Increase or decrease A.C voltage
<b>Correct answer: B</b> <ul> <li><b>Reason:</b> A transformer changes the amplitude of alternating current (AC) voltage using mutual induction. The ratio of voltages is V1/V2 = N1/N2 (turns on primary/secondary).</li> <li><b>Key concept:</b> Faradayβs law of electromagnetic induction and transformer action require AC to continually vary flux.</li> <li><b>Why others are incorrect:</b> - A: DC voltage cannot be transformed without conversion. - C: DC to DC conversion uses rectifiers/ DC-DC converters. - D: DC to AC requires an inverter.</li> <li><b>Exam tip:</b> Remember: transformers only work with AC; no transformer converts DC directly.</li> </ul>
Rifle
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