Q4. A. Describe a brush less alternator with a.c. exciter static A.V.R.;
B. State the output voltage characteristics for this type of machine.
Q4. A. In a.c. generators, voltage dip occurs in two stages.
I. Sketch a voltage-time graph showing the pattern of voltage dip.
II. Referring to this graph, state with reasons the effect on the electrical system of a small power installation when a large load is suddenly switched on.
B. Explain EACH of the following categories of voltage control:
(i) Error operated; (ii) Functional.
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