What is the net rating range for transmission losses?

What is the net rating range for transmission losses?

• A. 5-15
• B. 15-25
• C. 25-35
• D. 35-45

Answer: (B)

Transmission losses come from the resistance and impedance of conductors and equipment in the path, turning part of the transmitted power into heat. The “net” rating reflects how much usable power remains after these losses. In many standard practice contexts, the total losses in a transmission system under typical loading are about a quarter of the transmitted power, which places the net loss range around 15–25%. That’s why this range is chosen as the best answer. The lower range would understate common losses, while the higher ranges imply far more loss than is typical for ordinary transmission systems. Losses vary with distance, conductor size, and load, but 15–25% is the conventional estimate used in exams.

Transmission losses come from the resistance and impedance of conductors and equipment in the path, turning part of the transmitted power into heat. The “net” rating reflects how much usable power remains after these losses. In many standard practice contexts, the total losses in a transmission system under typical loading are about a quarter of the transmitted power, which places the net loss range around 15–25%. That’s why this range is chosen as the best answer. The lower range would understate common losses, while the higher ranges imply far more loss than is typical for ordinary transmission systems. Losses vary with distance, conductor size, and load, but 15–25% is the conventional estimate used in exams.