In a certain 3-phase induction motor, the resistance is one fifth the leakage reactance for both primary and secondary windings. The primary impedance is identical with the referred secondary impedance. The slip at full load is 4 %. It is desired to limit the starting current to three times the full-load current. By how much must: (a) R1 be increased? (b) How would the maximum torque be affected if the extra resistance was left in circuit?

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Analog to Digital Converters

The analog-to-digital converter (ADC) allows circuits controlled by microprocessors, Arduinos, Raspberry Pi, and various reasonable digital circuits to be connected to the real world. In the real world, analog signals have a continuous stream of information from a variety of sources and sensors capable of measuring sound, light, temperature, or movement, in addition to the many digital systems that interact with their environment by measuring analog signals from those transducers.