Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction, typically to change the voltage level. A step-up transformer converts a low AC voltage to a high AC voltage (statement 1), while a step-down transformer converts a high AC voltage to a low AC voltage (statement 2). Transformers only work with alternating current (AC).
Transformer is used to 1. convert low a.c. voltage to high voltage 2. convert high a.c. voltage to low voltage 3. convert direct current to alternating current 4. regulate the fluctuation of voltage Select the correct answer using the code given below.
Asked in UPSC CAPF 2013 · Topic: Electric Current (Electrical Power and Energy, Joule heating effect)
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