Task id13090
What number n revolutions per second will a direct current electric motor with a permanent magnet develop, connected to a circuit with e. d. with equal to E, with total circuit resistance R, if, working as a dynamo, it develops e. d.s. equal to E1 at a number of revolutions per second equal to n1, and the moment of friction on the motor axis is equal to M? What current will flow through the circuit and what will be the number of revolutions at M = 0?
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