What is the main function of a transformer in an electrical system?

What is the main function of a transformer in an electrical system?

• A. To improve energy efficiency
• B. To change the voltage level of an electrical supply
• C. To convert direct current to alternating current
• D. To store electrical energy

Answer: (B)

The main function of a transformer in an electrical system is to change the voltage level of an electrical supply. Transformers are critical components in electrical distribution systems that allow for the efficient transmission of electricity over long distances. They operate based on the principles of electromagnetic induction, where electrical energy is transferred between two or more coils of wire, known as windings. By adjusting the number of turns in the primary and secondary coils, a transformer can increase (step up) or decrease (step down) the voltage while maintaining the same power level (minus losses). This capability makes it possible to manage the voltage requirements of different applications, ensuring that electrical devices receive the appropriate voltage for their operation. It is essential for maintaining the efficiency and stability of power systems and ensuring safety during electrical distribution. The other mentioned functions do not accurately describe the primary role of a transformer. While improving energy efficiency, converting direct current to alternating current, and storing electrical energy are important in different contexts, they do not pertain to the specific function of a transformer in voltage modification within electrical systems.

The main function of a transformer in an electrical system is to change the voltage level of an electrical supply. Transformers are critical components in electrical distribution systems that allow for the efficient transmission of electricity over long distances. They operate based on the principles of electromagnetic induction, where electrical energy is transferred between two or more coils of wire, known as windings.

By adjusting the number of turns in the primary and secondary coils, a transformer can increase (step up) or decrease (step down) the voltage while maintaining the same power level (minus losses). This capability makes it possible to manage the voltage requirements of different applications, ensuring that electrical devices receive the appropriate voltage for their operation. It is essential for maintaining the efficiency and stability of power systems and ensuring safety during electrical distribution.

The other mentioned functions do not accurately describe the primary role of a transformer. While improving energy efficiency, converting direct current to alternating current, and storing electrical energy are important in different contexts, they do not pertain to the specific function of a transformer in voltage modification within electrical systems.