One disadvantage of radar is that it is subject to both mechanical and electrical failures.

One disadvantage of radar is that it is subject to both mechanical and electrical failures.

• A. Mechanical
• B. Electrical
• C. Both
• D. None

Answer: (C)

Radar reliability hinges on two broad kinds of failure: mechanical and electrical. The rotating radar antenna and its drive gear, bearings, slip rings, and mounting are subject to wear, corrosion, moisture, and vibration. These mechanical parts can seize, wobble, or drift, causing the antenna to stop rotating properly, lose pointing accuracy, or fail to produce a usable picture. At the same time, the radar’s electrical side—transmitter, receiver, power supply, cables, and processing electronics—depends on clean power and intact circuitry. Faults here can degrade the transmitted signal, corrupt the display, or cause a total loss of radar function. Because either domain can fail on its own, saying that radar is subject to both mechanical and electrical failures accurately reflects real-world issues. The other options fall short because they imply only one failure type or none, which doesn’t capture the full range of potential problems. Regular maintenance and checks for both mechanical and electrical subsystems help keep radar reliable.

Radar reliability hinges on two broad kinds of failure: mechanical and electrical. The rotating radar antenna and its drive gear, bearings, slip rings, and mounting are subject to wear, corrosion, moisture, and vibration. These mechanical parts can seize, wobble, or drift, causing the antenna to stop rotating properly, lose pointing accuracy, or fail to produce a usable picture. At the same time, the radar’s electrical side—transmitter, receiver, power supply, cables, and processing electronics—depends on clean power and intact circuitry. Faults here can degrade the transmitted signal, corrupt the display, or cause a total loss of radar function. Because either domain can fail on its own, saying that radar is subject to both mechanical and electrical failures accurately reflects real-world issues. The other options fall short because they imply only one failure type or none, which doesn’t capture the full range of potential problems. Regular maintenance and checks for both mechanical and electrical subsystems help keep radar reliable.