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It has a DC motor with shunt connection and 230 V terminal voltage, which connected to empty consumption 2 A. Consider n

Posted: Tue Jul 12, 2022 8:29 am
by answerhappygod
It has a DC motor with shunt connection and 230 V terminal voltage, which connected to
empty consumption 2 A. Consider negligible the voltage drop in the brushes, the winding of
armature has a resistance of 0.3 Ω, the nominal current in the field winding is 0.5 A and the power loss in the iron + mechanics is equal to 344 W. When the motor absorbs
a current of 10 A in the positive feeder, it is requested to determine:
* engine efficiency