Electrical Measurements and Meter Testing (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from Electrical Measurements and Meter Testing

The difference between the readings Of the two gauges connected before and after the water motor represents the pressure required to overcome the Oppo sitiou Offered by the circuit through the motor and the pressure required to cause the revolving portion to turn. If there is no load on the motor, very little pressure will be required to operate it; but with an increase in load, there must be an increase in pressure acting on the motor if the speed is to be maintained constant. The action Of the water motor in this case corresponds to the constant-current series motor in the electrical circuit.

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