Answer :
Step-up transformer is the transformer used to boost voltage to kilovoltage levels by increasing the voltage and decreasing the current. So, the option 1 is correct.
A step-up transformer is an essential component in electrical systems used to elevate voltage levels while reducing current. This process is crucial for applications like long-distance power transmission in which minimizing current helps mitigate energy losses due to resistance in transmission lines.
By increasing voltage and decreasing current, step-up transformers efficiently transfer power over extended distances, as higher voltages require less current to deliver the same amount of power. This is exemplified in power distribution systems, where step-up transformers boost voltage for transmission over high-voltage lines, reducing energy loss and enhancing efficiency.
Conversely, step-down transformers lower voltage and increase current, facilitating the safe delivery of power to homes and businesses at usable levels. These transformers play complementary roles in electricity distribution, ensuring efficient power transfer from generation sources to end-users while maintaining safety and reliability. Hence, the option 1 is correct.
