A series de motor is rated at line conditions of 220 volts and 25 Amperes at full-load. It turns at 185 rad/sec under rated condition. It has a total armature circuit resistance of 0.8 ohm and it is desired to hold its maximum starting current to 150% of the normal full-load current. Determine the following: a. The current that would flow if there were no added starting resistance. b. Total starting resistance to met the specified condition.

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A series de motor is rated at line conditions of 220 volts and 25 Amperes
at full-load. It turns at 185 rad/sec under rated condition. It has a total
armature circuit resistance of 0.8 ohm and it is desired to hold its
maximum starting current to 150% of the normal full-load current.
Determine the following:
a. The current that would flow if there were no added starting resistance.
b. Total starting resistance to met the specified condition.
Transcribed Image Text:A series de motor is rated at line conditions of 220 volts and 25 Amperes at full-load. It turns at 185 rad/sec under rated condition. It has a total armature circuit resistance of 0.8 ohm and it is desired to hold its maximum starting current to 150% of the normal full-load current. Determine the following: a. The current that would flow if there were no added starting resistance. b. Total starting resistance to met the specified condition.
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