Mathematics, 23.09.2021 04:30 arosh4763
You are an electrician on the job. It is decided that the speed of a large DC motor is to be reduced by connecting a resistor in series with its armature. The DC voltage applied to the motor is 250 V, and the motor has a full-load armature current of 50 A. Your job is to reduce the armature current to 40 A at full load bu connecting the resistor in series with the armature. What value of resistance should be used, and what is the power rating of the resistor?
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You are an electrician on the job. It is decided that the speed of a large DC motor is to be reduced...
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