95MEKG-2
Sr. No. 1
EXAMINATION OF MARINE ENGINEER OFFICER
Function: Marine Engineering at Management Level
MARINE ENGINEERING KNOWLEDGE (GENERAL)
M.E.O. Class II
(Time allowed - 3hours)
India (2004) Morning Paper Total Marks 100
NB :(1) Answer SIX Questions only.
(2) All Questions carry equal marks
(3) Neatness in handwriting and clarity in expression carries weightage
(4) Illustration of an Answer with clear sketches / diagrams carries weightage.
1. (a) Describe an automatic self sludging centrifuge suitable for dealing with fuel of density up to 1010kg/m3 at 15ºC.
(b) Explain how the centrifuge described in Q.2(a) is able to remove water from a fuel which has a density that is higher than that of water and state any factors that may assist the operation.
(c ) As Chief Engineer, write out the start up procedure for the centrifuge described in Q.2(a) for the benefit of your staff.
(d) State how the problem of catalytic fines in fuel oil may be dealt with.
2.With reference to the burning of residual fuel state, with reasons, EACH of the following:
(a)FIVE main problems associated with burning residual fuel oil in medium speed engines;
(b)how the problems mentioned inQ.2(a) may be minimised in order to ensure that a medium speed engine may be operated in an acceptable manner;
(c)the procedure you, as Chief Engineer would adopt in order to ensure that bunkers of the correct quantity and specification were ordered and accepted on board.
3. (a) Describe with the aid of a sketch, the main engine ancillary equipment for automatic monitoring and regulation of fuel viscosity.
(b)Explain the operation of equipment described in Q.3(a)
(c ) Discuss the multi fuel concept.
- With reference to centrifugal pumps :
(i) Sketch typical discharge characteristics showing variation of throughout as discharge head and speeds are alerted
(a)State the relevance of the discharge characteristies for the selection of an emergency fire pump.
5.(a) Sketch a fully automated air conditioning system
(b) With reference to an air conditioning system
(i)describe how conditioned air is maintained within the comfort range and state the effects on the crew of air which is too dry.
(ii)State how harmul bacteria are eliminated from this system
- With reference to the lubrication of a reciprocating Freon refrigeration compressor
(a)state, with reasons, the characteristics of by the lubricating oil in use in such systems.
(b)discuss EACH of the following with respect to cause, effect and remedy
(i)copper plating
(ii)freon cloud point
(iii)freon floc point
(c ) Sketch a ship’s indirect refrigeration system arranged for cooling containers stowed in stacks in the hold.
- With reference to oil / water separators :
(a)describe, with the aid of a sketch, the circuit for an interface detector
(b)explain the consequences if the interface position is incorrect
8.(a) Describe a vacuum sewage system
(b)With reference to the system described in Q8(a)
(i)state ONE advantage of the system
(ii)state why a holding tank may be required to be fitted to the system
(iii)state the problems resulting from the retention of untreated sewage in a holding tank.
9.With reference to an emergency source of electrical power in passenger ships :-
(a)Describe a typical power source.
(b)Give a typical list of essential services which must be supplied simultaneously.
(c)Explain how the emergency installation can be periodically tested.
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