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Q5. With respect to High Voltage Electric system:

a) What are reasons for using high voltage on board ship? Enumerate the advantages and disadvantages of using HV systems onboard ship? (6)

b) There are mainly four types of high voltage testing methods applied on high voltage equipment and these are i) Sustained low frequency tests ii) Constant DC/AC test iii) High frequency test and iv) Surge or impulse test. Briefly explain how these tests are conducted. (10)