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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q536 - Electrical, Electronic, & Control Engineering
523. As shown in the illustrated diagnostic setup for locating a shorted field coil of a ten-pole synchronous motor, if 240 VAC/60 Hz is applied across the brushes, what would be the individual voltage drops measured across each field coil assuming that none of the field coils are shorted
With 240 VAC applied across ten series-connected, identical field coils, the voltage is divided equally, resulting in a voltage drop of 24 VAC per coil (240 VAC / 10 coils = 24 VAC/coil).
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