Assessment Test


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1. Guide force couples acting on the crosshead result from transverse reaction forces depending on the number of cylinder and firing order. What is the guide force couple causing twisting of the engine?

 
 
 
 

2. The engine lateral vibration due to the guide force couples may cause resonance with the engine foundation structure. What is/are the possible solution at the concept design to be considers?

 
 
 
 

3. The engine lateral vibration due to the guide force couples may cause resonance with the engine foundation structure. What is/are the possible solution at the concept design to be considers?

 
 
 
 

4. What is the most critical aspect in avoidance of unacceptable ship vibration?

 
 
 
 

5. In the hull propeller clearance, what effect to be considers the hull surface excitation by the propeller that changing the wake inflow to the propeller according to the specified propeller relocation but with the propeller actually fixed in position relative to the hull?

 
 
 
 

6. In the hull propeller clearance, what effect to be considers the hull surface excitation by the propeller that changing the propeller location relative to the hull but with the wake inflow to the propeller held fixed?

 
 
 
 

7. What is the wake in the propeller plane without the action of the propeller?

 
 
 
 

8. What is the wake in the propeller plane with the action of the propeller?

 
 
 
 

9. Total wake is equal to ___________.

 
 
 
 

10. What is/are the factor wake fraction depends on? I.Length of the ship II.Fullness of the ship III.Increases with hull roughness

 
 
 
 

11. Which of the following list typical critical area that is NOT to be taken into consideration in any vibration analysis?

 
 
 
 

12. Which of the following list typical critical area that is NOT to be taken into consideration in any vibration analysis?

 
 
 
 

13. Which of the following list typical critical area that is NOT to be taken into consideration in any vibration analysis?

 
 
 
 

14. Which of the following list typical critical area that is NOT to be taken into consideration in any vibration analysis?

 
 
 
 

15. Which of the following components is NOT generally considered in the total damping associated with overall ship hull structure vibration?

 
 
 
 

16. Which of the following components is NOT generally considered in the total damping associated with overall ship hull structure vibration?

 
 
 
 

17. What is the value equivalent to the average sinusoidal value obtained during steady speed trial condition and for the design trial purpose?

 
 
 
 

18. What is a component of vibration which exists at any particular transverse plane of the hull so that there is little or no relative motion between elements intersected by the plane?

 
 
 
 

19. What is the peak value of vibration (velocity, acceleration or displacement) during period of steady state vibration?

 
 
 
 

20. What is the dynamic response of a structural element, deck, bulkhead or piece of equipment which is significantly greater than that of the hull girder at that location?

 
 
 
 

21. In the superstructure of the vessel, which of the location vertical, transverse and longitudinal vibration being measured?

 
 
 
 

22. In the superstructure of the vessel, which of the location vertical, transverse and longitudinal vibration being measured?

 
 
 
 

23. Which of the following reporting data that should NOT be include in measurement of vibration of the vessel?

 
 
 
 

24. Which of the following reporting data that should NOT be include in measurement of vibration of the vessel?

 
 
 
 

25. Which of the following reporting data that should NOT be include in measurement of vibration of the vessel?

 
 
 
 

26. Which of the following reporting data that should NOT be include in measurement of vibration of the vessel?

 
 
 
 

27. In vibration of two stroke low speed diesel engine, what is the term mass elastic system?

 
 
 
 

28. In vibration of two stroke low speed diesel engine, what is the term excitation?

 
 
 
 

29. In vibration of two stroke low speed diesel engine, what is the term mode shape or vibration mode?

 
 
 
 

30. In arc welding, what is an improper fusion defect?

 
 
 
 

31. In arc welding, what is an overlap defect?

 
 
 
 

32. In arc welding, what is an insufficient penetration defect?

 
 
 
 

33. In arc welding, what is a pits defect?

 
 
 
 

34. In arc welding, what is a porosity defect?

 
 
 
 

35. In arc welding, which of the following causes is NOT the cause of porosity defects?

 
 
 
 

36. In arc welding, which of the following causes is NOT the cause of insufficient penetration defects?

 
 
 
 

37. In arc welding, which of the following causes is NOT the cause of pits defects?

 
 
 
 

38. In arc welding, which of the following causes is NOT the cause of improper fusion defects?

 
 
 
 

39. In arc welding, which of the following the cause of overlap defects?

 
 
 
 

40. One example of plastic bonding used is epoxy. What is the disadvantage of using epoxy adhesive?

 
 
 
 

41. One example of plastic bonding used is epoxy. What is the disadvantage of using epoxy adhesive?

 
 
 
 

42. One example of plastic bonding used is epoxy. What is the disadvantage of using epoxy adhesive?

 
 
 
 

43. One example of plastic bonding used is silicone. What is the disadvantage of using silicone adhesive?

 
 
 
 

44. One example of plastic bonding used is silicone. What is the disadvantage of using silicone adhesive?

 
 
 
 

45. One example of plastic bonding used is silicone. What is the disadvantage of using silicone adhesive?

 
 
 
 

46. In plastic bonding, what is the general description of acetal homopolymer?

 
 
 
 

47. In plastic bonding, what is the general description of cellulose acetate propionate?

 
 
 
 

48. In plastic bonding, what is the general description of epoxy?

 
 
 
 

49. In plastic bonding, what is the general description of fluoromers?

 
 
 
 

50. In plastic bonding, what is the general description of ionomers?

 
 
 
 

51. In plastic bonding, what is the general description of liquid crystal polymers?

 
 
 
 

52. In plastic bonding, what is the general description of phenolic?

 
 
 
 

53. In plastic bonding, what is the general description of polyamide?

 
 
 
 

54. A rivet is a mechanical fastener, it consist of a smooth cylindrical shaft with a head on one end. What do you called the end opposite the head?

 
 
 
 

55. What do you called the end of the rivet that is original head?

 
 
 
 

56. What do you called the end of the rivet that is deformed?

 
 
 
 

57. In ideal refrigeration system, what is COP carnot?

 
 
 
 

58. In ideal refrigeration system, what is COP carnot?

 
 
 
 

59. In ideal refrigeration system, what is COP carnot?

 
 
 
 

60. What is a haycock wagon boiler?

 
 
 
 

61. What do you called a cast iron cross sectional boiler that the water is contained inside the cast iron section?

 
 
 
 

62. What is the other term for water tube boiler?

 
 
 
 

63. What is the reason for producing draught in a boiler?

 
 
 
 

64. One end of the tube in a glass tube type water indicator for a boiler is connected to water space, where is the other end connected?

 
 
 
 

65. Which of the following statement is correct regarding compound steam engine?

 
 
 
 

66. How do you determine a metal weather a carbon steel or stainless steel?

 
 
 
 

67. How do you determine a metal weather a carbon steel or stainless steel?

 
 
 
 

68. To determine the metal weather regular carbon steel or stainless steel is to apply copper sulfate into the metal. How can you say the metal is a regular carbon steel?

 
 
 
 

69. To determine the metal weather regular carbon steel or stainless steel is to apply copper sulfate into the metal. How can you say the metal is a stainless steel?

 
 
 
 

70. How can you determine that the stainless steel is austenitic or ferritic?

 
 
 
 

71. An austenitic stainless steel is a __________.

 
 
 
 

72. When applying small magnet to a ferritic stainless steel it will __________.

 
 
 
 

73. The nylon properties are wear resistance, excellent impact resistance and high fatigue resistance, it is typically use in ___________.

 
 
 
 

74. What is the melting point of molybdenum steel?

 
 
 
 

75. What is the melting point of nickel?

 
 
 
 

76. What is the melting point of chromium?

 
 
 
 

77. Which of the following metals and alloys has the higher melting point?

 
 
 
 

78. Which of the following metals and alloys has the higher melting point?

 
 
 
 

79. Which of the following metals and alloys has the higher melting point?

 
 
 
 

80. Which of the following metals and alloys has the higher melting point?

 
 
 
 

81. What is the relative resistivity of aluminum at 20°C?

 
 
 
 

82. What is the relative resistivity of chromium at 20°C?

 
 
 
 

83. What is the relative resistivity of phosphor bronze at 20°C?

 
 
 
 

84. What is the relative resistivity of tantalum at 20°C?

 
 
 
 

85. What is the relative resistivity of stainless steel at 20°C?

 
 
 
 

86. Plastics are generally classified as __________.

 
 
 
 

87. Stress is defined as _____________.

 
 
 
 

88. Strain is defined as the ____________.

 
 
 
 

89. What classification of plastic Ultra-High Molecular Weight Polyethylene belongs?

 
 
 
 

90. What classification of plastic polyethylene such as disposable shopping bags and trash bags belong?

 
 
 
 

91. What is the material science that deals with the study of physical structure and component of metal?

 
 
 
 

92. What is the material science that deals with the study of metals and alloys including their extraction and microstructure?

 
 
 
 

93. What is the material science that deals with the study of materials wear due to friction?

 
 
 
 

94. What is the material science that deals with the study of materials processes and their interaction?

 
 
 
 

95. Which of the following contribute to vibration on reduction? I.Reduce exciting force amplitude II.Increase stiffness III.Avoid values of frequency ratio near unity

 
 
 
 

96. What is/are the element of importance in ships vibration?

 
 
 
 

97. Which of the following contribute to vibration on reduction? I. Increase damping II.Increase stiffness III.Reduce exciting force amplitude

 
 
 
 

98. What is/are the distinctly different type of force can be associated with the internal combustion engine?

 
 
 
 

99. What is/are the distinctly different type of force can be associated with the internal combustion engine?

 
 
 
 

100. Guide force couples acting on the crosshead result from transverse reaction forces depending on the number of cylinder and firing order. What is the guide force couple causing rocking of the engine?

 
 
 
 


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