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Q2. a) In A.C. generators, voltage dip occurs in two stages.

i) Sketch a voltages-time graph showing the pattern of voltage dip. (4)

ii) Referring to this graph, state the reasons the effect on the electrical system of a small power installation when a large load is suddenly switched on. (4)

b) Explain EACH of the following categories of voltage control:

i) Error operated (4)

ii) Functional (4)