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EK-General : 2022/OCT/10
Question

Q10. With reference to a.c switchboards:

(a) State with reasons, the protective devices that are fitted; (5)

(b) state why a breaker may fail to open under prolonged low voltage conditions. (2)

(c) explain the actions to be taken should a main generator circuit breaker stay connected despite repeated efforts to trip it off the board. (3)

Asked in Year/Month/Ques No.
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