Q9. (a) Describe, with the aid of a sketch, a static excitation system for a generator.(8)
(b) Explain TWO advantages of static excitation.(2)
Q9. With reference to the paralleling of a.c. generators:
(a) outline the requirements of synchronisation; (2)
(b) explain how KW power is shared; (1)
(c) explain how K var power is shared; (1)
(d) state SIX types of damage that may be caused when machines are incorrectly synchronised.(6)
Q11. (a) Explain the principle of operation of an insulation resistance test, stating why the test is carried out on a regular basis. (6)
(b) Describe how EACH of the following electrical tests is carried out:
(i) resistance; (2)
(ii) continuity. (2)
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