A single-phase induction motor is operating at a very light load during a large part of every day… 1 answer below »

A single-phase induction motor is operating at a very light load during a large part of every day and draws 10 A from the supply. A devices proposed to “increase the efficiency” of the motor. During a demonstration the device is placed in parallel with the unloaded motor and the current drawn from the supply drops to 8 A. When two of the devices arc placed in parallel, the current drops to 6 A. What simple device will cause this drop in current? Discuss the advantages of the device. Is the efficiency of the motor increased by the device? (Recall that an induction motor draws lagging current.)  

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