ENGINEERING KNOWLEDGE (GENERAL) question paper sample

ENGINEERING KNOWLEDGE (GENERAL)

Time allowed: 3.5 hours

Six (6) Questions only to be attempted

(1) Why is feed water heated before entering a boiler? What are the dangers involved in pumping

cold feed into a steaming boiler? What arrangements are used to heat feed water?

(2) Describe the operation of surface condenser. What are the indications of incorrect cooling

water circulation? Name all the valves and fittings on the circulating water system

between the shipside suction and the overboard discharge.

(3) Why is it important to exclude air from telemotors systems and the ram cylinders of

steering gears? What methods are employed to rid these systems of air?

(4) Describe a stern tube for use on a single-screw steel vessel and explain how the tube is

held in position at the stern frame and bulkhead.

(5) Describe the operation and principle of construction of an aneroid barometer. In what

units is the instrument graduated? What useful purpose does it serve? What is the normal

atmospheric pressure reading at sea level?

(6) For what are the double bottom tanks of a ship used? What precautions must be taken

before entering any empty tanks that have contained (a) oil and (b) water?

(7) Describe a bilge pumping system. Sketch a typical bilge well, complete with suction pipe, valve

and mud-box. What type of valve is used as a bilge suction valve? Why is it so constructed?

(8) What care and maintenance do electric generators and motors require? What are the

dangers of excess oil in the pedestal bearings of generators?

(9) Describe a portable foam fire extinguisher and explain how it operates and how it is

recharged and maintained in good condition. In what locations is this extinguisher found

aboard ship and for what kind of fire is it suitable?

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M❤K