A 250 V DC long-shunt, compound motor takes a current of 82 A at full load. Calculate the motor efficiency, given the following details: armature, shunt field and series field resistance of 0.09 Q, 125 Q, 0.042 respectively. Total of all other losses = 750 W 82 A R=0.04 2 R = 125 250 V M R = 0.09 Q

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A 250 V DC long-shunt, compound motor takes a current of 82 A at full
load. Calculate the motor efficiency, given the following details: armature,
shunt field and series field resistance of 0.09 Q, 125 Q, 0.042
respectively. Total of all other losses = 750 W
82 A
R=0.04 2
R = 125
250 V
M
R = 0.09 Q
Transcribed Image Text:A 250 V DC long-shunt, compound motor takes a current of 82 A at full load. Calculate the motor efficiency, given the following details: armature, shunt field and series field resistance of 0.09 Q, 125 Q, 0.042 respectively. Total of all other losses = 750 W 82 A R=0.04 2 R = 125 250 V M R = 0.09 Q
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