Consider the single-stack, three-phase variable reluctance stepper motor shown below. Find the step angle for the following phase-switching sequences: A 1.50 1-2-3-1 8, 1° 1-12-2-23-3-31-1 C 2.5° 12-23-31-12 D. 45° E 15° E 30° G. 7.5° > > >

P-1). All dual-voltage single-phase split-phase motors have two sets of start windings. a) true b) false P-2). Which of the single-phase split-phase motors listed below is designed to have its start winding energized while running. a) resistance-start induction-run b) capacitor-start induction -run c) capacitor-start capacitor-run d) all of the above P-3).Which of the capacitors listed below has the longer duty cycle because it can dissip eat better? a) electrolytic b) oil

Question A 3-phase, 415 V, 4-pole, 50 Hz induction motor draws 5 times the rated current at rated voltage at starting. It is required to bring down the starting current from the supply to 2 times of the rated current using a 3-phase autotransformer. If the magnetizing impedance of the induction motor and no-load current of the autotransformer is neglected, then the transformation ratio of the autotransformer is given by