Q4. (a) With reference to a control system, list FOUR examples of a measured variable. (4)
(b) Explain the meaning of the term two step control, giving one example of its use. (6)
(c) Explain the meaning of the term proportional control, giving one example of its use. (6)
Q6. With reference to main distribution systems fitted with preference trips:
(a) State why the preference trip is fitted. (2)
(b) Explain the operation of a THREE stage trip. (8)
(c) State THREE circuits that can not be connected to the preference trip giving a reason for EACH (6)
Q9. Explain the meaning and purpose of EACH of the following ship terms:
(a) Hawse pipe. (4)
(b) Chain Stopper. (4)
(c) Fairlead. (4)
(d) Bollard. (4)
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