Hopkinson’s Test on DC Shunt Machine Predetermination of Efficiencies
salient features
1.Full load test can be done on two identical shunt machines without drawing full power from the mains.
2.The two machines are mechanically coupled. One of them operates as motor and the other as generator.
3.The output of generator is used as supply to the motor. Power taken from the supply is utilized to overcome the losses.
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