The no-load curve VNL = f(Im) of a 4-pole, 2-hp, star-connected squirrel cage induction machine with rated values of: 220 V, 60 Hz, 1725 rpm, 6.1 A. 300.0 250.0 200.0 150.0 100.0 50.0 0.0 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 Phase Current (A) The excitation current of the machine was supplied from star-connected capacitors connected in parallel with the machine. Calculate: a) The minimum capacitance required for self-excitation of the machine at the synchronous speed? b) The capacitance required to obtain the rated terminal voltage at the synchronous speed? c) On the same no-load characteristics graph, plot the capacitance load-line for (a) and (b). Line Voltage ( v)