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Q2. a) Describe the circuit breaker for an A.C. generator using a sketch to show how arcing is controlled. (8)

b) Explain the sequence of events that might occur if the breaker opens on a short circuit and state the check you would require following such event. (4)

c) Give a safe procedure to follow should a main circuit breaker fail to open under fault Condition. (4)

Q7. With reference to Annex V of MARPOL 73/78 that deals with the prevention of pollution of the sea by garbage from ships –

a) Define the following terms.

i) Garbage

ii) Nearest land

iii) Special areas (8)

b) State the regulations governing the disposal of garbage outside special areas. (8)