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Q4.a) State the primary function of an AVR.

(b) State conditions external to a generator that cause its terminal voltage to drop.

(c) Sketch a clearly labelled, typical AVR response curve, identifying the application of load recovery time, maximum acceptable voltage dip, and the permissible steady-state voltage regulation.

(d) State the function of an AVR trimming potentiometer for each of the following cases

(i) when a generator operates in standalone mode

(ii) when a generator operates in parallel.