1. What is the no-load speed of this separately excited motor when Radj = 175 Ω and
(a) VA = 120 V,
(b)
VA = 180 V,
(c) VA = 240 V?
2. For the separately excited motor of Problem 1:
(a) What is the maximum no-load speed attainable by varying both VA and Radj ?
(b) What is the minimum no-load speed attainable by varying both VA and Radj ?