PJM Transmission Practice Test 2025 - Free Transmission Practice Questions and Study Guide

Increasing cooling fan speed is a common method employed to enhance cooling during high-load operations. When electrical loads on the system increase, the demand for efficient cooling rises correspondingly. By increasing the speed of the cooling fans, more air is circulated through the system, allowing for more effective heat dissipation. This helps maintain optimal operating temperatures for various equipment and prevents overheating, which could lead to reduced efficiency or component failure.

In contrast, other options would be counterproductive. For instance, reducing airflow or minimizing circulation would lead to less heat being expelled from the system, exacerbating temperature rise. Decreasing generator output may lower the overall load, but it does not directly improve cooling mechanisms, and the cooling requirements during high-load situations remain unaddressed. Thus, increasing fan speed is the most direct and effective action for enhancing cooling when operations are under high load.