Q11. With reference to electrical short-circuits: (a) state, with reasons, THREE factors that will influence the severity of a short circuit; (6)
(b) explain the role of reactance when selecting protective devices. (4)
Q11. With reference to a THREE phase electrical distribution system:
(a) discuss the advantages and disadvantages of an insulated neutral system; (8)
(b) state how an earthed neutral system is earthed and the measures taken to limit the maximum earth fault current. (2)
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