143. When firing a boiler in local manual control, an increase in boiler load must be accompanied by alan.

144. In a steam propulsion plant, the primary source of auxiliary exhaust steam is from the ?.

145. Before performing any maintenance on a hydraulic system storing energy in an accumulator, you should.

146. The size of flexible hose used in hydraulic system is indicated by __

147. While the oily-water separator is operating in the processing mode , if a low vacuum , what is the probable cause?

148. It can prevent heat damage to fuel injection nozzles by avoiding

149. Engine room bilge water can be pumped out overboard safely by the use of which equipment listed below?

15. Which of the following statements is correct to ensure safety to entering a pump room?

150. The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally ______?

151. Movement of the pump control rack in a fuel injection system using individual plunger-type pumps

152. What is the effect if a double suction centrifugal pump impeller has been installed in the reverse direction?

16. In the illustrated hydraulically operated turbine gland seal regulator, the exhaust dump valve is closed as a result of the piston being actuated by alan .

17. What parts of Oil Discharge monitoring and control system checked the flow rate of the oily water to be discharged is measured at the discharge pipe?

18. Unbalance accumulation of sludge in the bowl can result to

19. Boiler water samples should be circulated through a cooling coil prior to analysis because

2. While the oily-water separator is operating in the processing mode, what is the probable cause of a low vacuum?

20. Discharge of oily mixtures from machinery space bilges of tankers is prohibited except which of the following equipment is fitted?

21. A hydraulic system gear pump being fed from a reservoir frequently indicates signs of excessive pitting after two months of service. Which of the following would most likely contribute to this condition?

22. Which of the following actions should be taken FIRST if a bilge-well of a multiple suction bilge system is unable to be pumped out?

23. The effect of too much heating in the fuel oil of main engine is

24. Air leakage into the pump casing by way of the packing gland of a condensate pump is prevented by?

25. Marpol regulation came into effect stating that the oily water separator which was previously certified for 100 ppm be changed to:

26. A report when an incident takes place involving the discharge or probable discharge of oil (Annex I of MARPOL 73/78) ?

27. Setting the relief valve opening pressure in a hydraulic system lower than the required operating pressure will result in

28. An oily water separator consist of three stages, which one of the following unit segments separated the impurities and particles?

29. Rows of tubes installed along the walls, floor, and roof of the furnace are called

3. Gland sealing steam is used during steam turbine operation to prevent the loss of

30. Which of the listed boiler components is used to equalize the distribution of water to the generating, tubes and provide an area for the accumulation of loose scale and other solid matter present in the boiler water?

31. Which of the boiler components listed receives feedwater and serves as an area for the accumulation of saturated steam?

32. Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed tank becomes flooded?

33. Separator functions to separate both solid and liquid impurities of oil is known as

34. What device is used to monitor the fuel consumption of the ship Is fuel oil system?

35. Main propulsion engine lube oil sumps should be constructed

36. The lubricating oil consumption in a running diesel engine if excessive can be caused by

37. What is the largest source of tanker pollution ?

38. Metallic packing rings are installed in turbine diaphragms to prevent.

39. When centrifugal pump is overhauled, it was found that shaft had developed grooves on it and no spare is available onboard, what action can be taken?

4. Clarifier is an oil separator use to remove

40. In a closed feed and condensate system, the drain from the second stage air ejector returns directly to the.

41. What is the reason why a centrifugal bilge pump requires priming?

42. A good quality oil used in main propulsion engine lubrication systems should be

43. The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that.

44. The purpose of the relief valve in a fuel oil service system is to .

45. Which of the following types of main propulsion turbines is most likely to require a dummy piston or cylinder arrangement to counterbalance axial thrust?

46. Which of the following actions should be taken to reestablish a 'blown' air ejector loop seal?

47. Which of the following problem is the most probable cause if an operating bilge pump is developing good vacuum, but is unable to discharge any water?

48. The ability of an oil to separate cleanly from an oil and water mixture is referred to as its?

49. Demulsibility of a lube oil is defined as,

5. Fuel oil penetration into the cylinder of a diesel engine is

50. Foot valves are primarily designed to