In Figure 1, V = 277 volts, L 2 mH, R = 0.4 Q, and system frequency 60 Hz. Determine (a) the RMS symmetrical fault current. (b) The RMS asymmetrical

fault current at the instant the switch closes,assuming maximum de offset. (c) The RMS asymmetrical fault current five cycles after the switch closes,assuming maximum de offset. (d) The de offset as a function of time if the switch closes when the instantaneous source voltage is 300 volts.