Which statement about noise in power systems is accurate?

Noise in power systems refers to unwanted electrical signals that can interfere with the performance and reliability of electrical equipment. The correct choice states that noise can disrupt synchronous states, which is important to understand in the context of power system operation.

In power systems, synchronous states refer to the condition where generators and loads are operating in sync, ensuring stability and efficiency. When noise is introduced into the system, it can cause fluctuations or interruptions that disrupt this synchronization, leading to issues such as voltage instability or equipment malfunction. These disruptions can compromise the overall reliability of the power system and affect the performance of sensitive electronic equipment.

The other options present statements that do not accurately reflect the nature of noise in power systems. While noise may not always be detrimental to every piece of electronic equipment, it can still produce adverse effects in many scenarios, particularly in sensitive systems. Noise absolutely impacts power quality, leading to various operational challenges, and it is not irrelevant in signal transmission, as it can significantly degrade the integrity of transmitted signals and the desired outcomes of communication systems. Understanding the implications of noise is crucial for maintaining efficient and stable power system operations.