Question 12Electricity & Electronics - Assistant Engineer

The correct answer is D) The low voltage winding is the secondary coil. In a transformer used to step down voltage, the low voltage winding is the secondary coil. The primary coil receives the higher input voltage, and the secondary coil produces the lower output voltage. This is achieved by having fewer turns in the secondary coil compared to the primary coil, which reduces the voltage according to the transformer turns ratio. The other options are incorrect because: A) the low voltage winding is not part of the core, B) the low voltage winding is insulated, and C) the low voltage winding is not the primary coil, which receives the higher input voltage.