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Engineering · Electrical Engineering
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Answer the questions from the above table
FIGUPE I E vo E volt If A 0.2 1 32o $7.09 S00 185 2S 420 13 4-044 ORO 1166 240 72 260 7S 280 177 400 | |29 260 L62 220 1134 80 13 20 160 I 135 180 42 460 420 | 13| | | 440 | 133 | 200 200 148 4LO2 220 IS3 46o 184 400 i 130 260 16 500 187 200 1168 Sto 1g0 220 l Table I Ascending Value Table 2 Descending Value
1. Plot a SAT UR T1 N CUR VE for increasing decreasing values of fieid current from the data in Ta and 2, using field currert I1, as nece ssary and the generated emf as ordinate. 2. ark on the graph the following: a) The field current for the rated load voltage. b) The ascending and descending saction c) The point on the curve where saturation begins. 3. Answer the following vith respect to the graph: a) Explain y the curve starts somewhsre above the origin. b) Explain fully the sffects of increasing the field current on the generatad ef. c) Why do descending and ascending sections of the saturation curve do not take the sone path? d) khy is it necessary to continue the field current in the sane direction. 4. What is the value of aSATURATICN CU R V E.
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