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Q9. With reference to the paralleling of A.C. generators:

(a) Outline the requirements of synchronisation; (3)

(b) Explain how KW power is shared; (1)

(c) Explain how Kvar power is shared; (1)

d) list the features that the Automatic Power Management System Controls for the operation of main switchboards and generators when the engine room is in unattended mode. (5)

Q10.During a complete loss of electrical power, essential vital services can be maintained by means of an Uninterruptable Power Supply (UPS).

(a)Describe, with the aid of a block diagram, the operation of an a.c. input UPS arrangement. (7)

(b)List SIX essential services that the UPS may support.  (3)

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)