Question
Download Solution PDFSeries Generators are generally NOT used because of their terminal voltage:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- In the series dc machine, there is one field winding wound over the main poles with fewer turns and a large cross-sectional area.
- Series winding is meant to be connected in series with the armature and naturally to be designed for rated armature current.
- So, there will be practically no voltage or very small voltage due to the residual field under no-load condition (Ia = 0).
- However, the field gets strengthened as the load will develop rated voltage across the armature with reverse polarity, is connected and terminal voltage increases.
- Variation in load resistance causes the terminal voltage to vary. The terminal voltage will start falling, at saturation armature reaction effect becomes pronounced at large load current.
- Hence, series generators are not used for delivering power at a constant voltage. Series generator found application in boosting up the voltage in d.c transmission system.
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