2. Calculate the step angle of a single-stack, 4-phase, 8/6-pole VR stepper motor. What is its resolution? [15; 24 steps/rev] 3. A stepper motor has a step angle of 1.8 and is driven at 4000 pps. Determine (a) resolution (b) motor speed (c) number of pulses required to rotate the shaft through 54. (a) 200 steps/rev (b) 1200 rpm (c) 30]