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Question
Q5. With reference to preferential tripping in a marine electrical distribution system:
A. State why this facility is required. (4)
B. With the aid of a sketch, describe a typical arrangement to provide three stages of tripping an instantaneous protection against short circuit. (12)
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Q4. With reference to preferential tripping in a marine electrical distribution system:
A. With the aid of a sketch, describe a typical arrangement to provide three stages of tripping an instantaneous protection against short circuit.
B. State why this protection is required.
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