Primary Professional Military Education (PPME) Block 6 Practice Exam

Magnetic sensors, commonly used for detecting and identifying objects, particularly in military and defense applications, generally operate effectively within a range of 500 meters or less. This effectiveness is influenced by the strength of the magnetic field produced by the object being detected, the sensitivity of the sensor, environmental factors, and the presence of other magnetic interference.

At distances beyond 500 meters, the magnetic signals tend to diminish significantly, making it challenging for sensors to accurately detect or identify the target. Thus, the operational range of these sensors is typically constrained to this shorter distance to ensure reliability and precision in detection.

While the other ranges listed provide a broader scope than what magnetic sensors can realistically cover, they do not align with the practical limitations observed in real-world applications. The effectiveness and reliability of detection decrease sharply as one moves beyond the 500-meter mark, underscoring the accuracy of this chosen range.