Answer: Both methods of power transmission have distinct advantages and disadvantages, and the choice between them depends on cost, environment, and specific project requirements.

• Overhead transmission lines: This is the most common type of transmission due to its lower installation cost and easier maintenance. The conductors are suspended on towers or poles, making them accessible for repairs. However, they are more susceptible to weather damage (storms, lightning) and have a greater visual impact on the landscape.

• underground transmission lines: These lines are buried, offering a significantly lower visual impact and greater protection from weather and environmental factors. They are also considered safer for the public. However, their installation is much more expensive and complex, and repairs are more difficult and time-consuming. They are often used in urban areas or environmentally sensitive locations.