This test is used to determine the efficiency, losses and temperature ries on the dc machines. This test is perform on the large shunt dc machines.
Hopkinson Test
This test is perform with the help of two shunt machine. Both machine are couplled together mechanically and electrically.
One act as a motor and other as a generator. The output of the motor is connected to the input of the generator and output of the generator connected to the input of the motor.
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