5. Using constant frequency supply, the induction motor magnetizing reactance Xm and core loss Rc parameters can be foun

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5 Using Constant Frequency Supply The Induction Motor Magnetizing Reactance Xm And Core Loss Rc Parameters Can Be Foun 1 (48.74 KiB) Viewed 68 times

5. Using constant frequency supply, the induction motor magnetizing reactance Xm and core loss Rc parameters can be found by performing (circle what experiment you would do on the left hand side), using the minimal!) set of measurement (circle what is absolutely necessary to find Xm, Reon the right hand side): (friction can be neglected) Locked rotor test No load test Rated Load test Phase Voltage, Vrms Phase Current, Arms Shaft speed, RPM Apparent Power, VA Active Power, W Reactive Power, VAR Shaft torque, Nm Power factor, Short circuit test 6. For grid connected induction motor with double cage rotor (rotor slot illustrated in the figure), the cage carrying the bulk of the rotor current at the start and at the nominal load is a. inner cage at the start and outer cage at nominal operating point, respectively b. rotor has no current c. outer cage at the start and both inner and outer cage at nominal operating point, respectively d. inner cage at the start and both inner and outer cage at nominal operating point, respectively