Electrical Engineering MCQ
When is the Ferranti effect on long overhead lines is observed when:
- The line is heavily loaded
- The power factor is unity
- The line is lightly loaded
- The line is fully loaded
Correct answer: 3. The line is lightly loaded
Explanation: The Ferranti effect occurs in long overhead transmission lines when they are lightly loaded. It is a phenomenon related to the capacitance of the line. In a lightly loaded condition, the line current is relatively low, and the voltage at the receiving end of the line tends to be higher than expected.