What is a key advantage of an electric turn coordinator?

The key advantage of an electric turn coordinator lies in its role as a backup instrument when there is a failure in the vacuum system. Traditional turn coordinators often rely on a vacuum-driven system to function effectively, and if that system fails, pilots can lose critical information about their aircraft's turn rate and coordination. An electric turn coordinator does not depend on suction from a vacuum system, thereby ensuring that pilots have access to vital navigational information regardless of the operational status of the vacuum system. This feature enhances safety and operational reliability in flight, making it an essential instrument for pilots.

The other options do not accurately represent the primary advantages associated with electric turn coordinators. While power consumption might be a consideration, it is not the defining capacity of an electric turn coordinator. The notion of improving speed during turns is misleading since turn coordinators indicate rate of turn rather than influencing speed. Additionally, providing real-time weather updates is unrelated to the function of a turn coordinator, as it is primarily tasked with measuring and indicating the aircraft's rate of turn and coordination in flight.