90. If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the ?

57. Sub-cooling is the method of reducing the temperature of the liquid refrigerant below its ?.

149. Some engines are using auxiliary electrically driven blowers which is continuously running during maneuvering and automatically cut-off if the scavenge air pressure reaches load.

85. The difference between the setpoint and the measured parameter in an automatic flow controller is called:

127. Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to ?

83. You observedan efficiency drop caused by compressor fouling of the gasturbine, what is the most effective counter measure to carry out?

145. In an engine operation what is the effect called that describes the unstable operation of the governor that will not maintain a steady state condition ?

116. What is the characteristic of a one ton air conditioning system?

50. A pounding noise in a steam cylinder in a mooring winch could be caused by ?

79. What would be the result if the fuel used for boiler burners has sediments?

120. Strainer is commonly used in hydraulic system in order to ?

14. A loud clicking noise occuring from within the valve compartment of an operating diesel engine would indicate ?

56. Scavenging fire occur if the engine piston rings are ?

96. Which of the following is used as moisture arrester and dryer in the refrigeration system?

88. Feedwater supplied to a flash type distilling plant will flash to vapor in the first-stage due to ?

119. The average pressure exerted on a piston during each power stroke is termed

25. Jacket water temperature in a closed cooling system of a diesel engine is normally controlled by ?

100. Which combination of the main shaft segments listed below that are located furthest from the main engine are connected by the inboard stern tube shaft coupling?

Piston area, multiplied by piston stroke, multiplied by number of cylinders, equals engine ?

69. The most common problem encountered by turbo-chargers in a two-stroke engine is ?

101. Air leaking into a flash type distilling plant could occur through

146. The possible cause why lube oil pumps fail to build up discharge pressure could be that the ?

8. To prevent fire inside scavenge air spaces in marine diesel engines, it is important that it should be occasionally?

105. Fluctuations in the pressure and temperature of the steam supplied to the first-effect of a low pressure submerged tube distilling plant will cause

10. When there is excessive formation of frost in the evaporator coils, it will ?

74. Oil mist detector is an instrument used to detect an oil mist formation in the engine crankcase , what cause oil formation ?

143. If the boiler fires are extinguished by water contamination in the fuel oil, you should FIRST?

31. Why cruise ship is one one of the main candidates for gas turbine propulsion?

65. Cylinder inlet valve failure in a low pressure air compressor can be caused by ?

17. What part of an engine has the function of measuring the speed and changing the fuel control---------?

45. What needs to be done in order to maintain the gas turbine sustainable power output?

111. Which of the following component is the primary shaft emerging out of the engine. It directly receives the rotational motion from the crankshaft and rotates at the maximum velocity in high-speed engines.

23. What part of a refrigeration system reduces the pressure of a liquid refrigerant?

136. What is the cause of excessively low air pressure occurring in the intercooler of a reciprocating air compressor?

7. Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in ?

47. Which of the following purpose of a safety valve fitted in the cylinder cover of a diesel engine?

139. Increasing the speed of a centrifugal pump will result in an increase in the pump capacity. Another means of increasing the total head pressure of a centrifugal pump is to increase the ?

37. Which of the following is used extensively to lubricate rolling contact bearing ?

147. Which of the following statement is correct relative to distillation plant operation?

49. What is the most effective method in removing water from diesel fuel oil ?

28. Moisture in a refrigeration system will cause a

115. If the flow of water from the centrifugal pump is allowed to be stopped by closing the discharge valve while the pump continues to run for an extended period, which of the following will occur?

3. An important point of consideration when replacing a dry type intake filter on an air compressor is to

86. Why diesel engine lubricating oil need more purification compare with the lubricating oil in a gas turbine?

16. In a single-acting diesel engine. The cylinder liner area that is most difficult to lubricate is the ?

20. The function of the spring used with channel or plate-type valves for reciprocating air compressors is to

42. The function of the hydraulic telemotor transmitter used in an electro hydraulic steering gear system is to

60. Which turbocharger component increases air density and helps improve engine operating efficiency?

75. The demisters installed in a flash-type evaporator serve to ?

68. What is the heat exchanger used to heat the boiler feed water by means of waste gas as it passes from the boiler to the stack?

51. What cause carbon deposits on the boiler burner throat ring?

102. A salinity indicating system functions on the basic principle of measuring the

137. While overhauling a jerk-type pump and the pump plunger must be replaced. What other part must also be replaced?

72. When the hydraulic control lever for a deck winch is placed in the neutral or off position, the spring set brake on the fluid motor drive shaft is

103. To keep the movement of the rudder closely in step with the steering wheel, which of the devices listed, when used on an electro-hydraulic steering gear?

63. How is power transfered from the main engine located deep inside the hull of a vessel to the propeller at the aft?

67. What is the possible cause why a lube oil pump fails to build up discharge pressure?

64. Which one of the following devices use to control the admission of steam to the steam cylinder of a reciprocating pump ?

140. Which of the following component is the primary shaft emerging out of the engine?lt directly receives the rotational motion from the crankshaft and rotates at the maximum velocity in high speed engines.

44. In relation to air conditioning system, where is the latent heat of water vapor depends ?

43. Having high exhaust temperatures would affect the ?

19. The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing work, which is known as ?

70. The amount of supplied fuel oil on the boiler atomizer depends on the ?

95. Boiler safety valves are set not to go above maximum operating pressure of higher than ?

35. Which of the valves listed below permits its flow in only one direction?

108. A distorted spray pattern from a fuel injector can cause a diesel engine to have ?

132. Integral water jacket liners use O-rings near the bottom of the liner. These O-rings serve to ?

92. Explain what is the use of Stern tube ?

106. The temperature of the refrigerant in the evaporator coil defends mostly upon the

104. The capacity of a rotary pump, when operated at a constant speed, will decrease with an increase in the pump?

138. During injection, the cam nose of the camshaft will push up the plunger of the pump, forcing the fuel to the ?

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

33. What is mainly the reason why fuel injectors used in heavy fuel oil systems are provided with cooling?

97. Fuel oil enters the main engine cylinder through?

133. What part of the boiler provides water circulation to the waterwall tubes?

5. It is possible to mount a double suction centrifugal pump impeller with the vanes facing the wrong direction. This would cause the pump

24. One method of constructing large marine diesel engines and reducing the total engine frame weight is through?

One of the major components of centrifugal pump is ?

39. The set point pressure at which the boiler safety valve is to lift to ?

6. The primary objective of the auxiliary exhaust system is to supply steam to ?

11. At what temperature in degree Celsius will safety devices called fusible plug installed in air compressor or compressed air system melts in order to prevent explosion-?

46. The heat gained per pound of refrigerant in the evaporator is known as they

9. If it becomes necessary to clean the spray holes of a fuel injector in a diesel engine which of the following is to be used ?

54. In the refrigeration system, the refrigerant absorbs the latent heat of vaporization in the ?

113. Which of the following cases listed below should soot blowing be applied to avoid soot fires ?

36. The fundamental difference between a 2-stroke and a 4-stroke engine is in the number of ?

144. How is viscosity of fuel in the atomizer can be reduced ?

114. What is the use of a steam control valves installed in the auxiliary exhaust line?

76. In a large, low-speed diesel engine the clearance between the piston crown and cylinder

93. The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speed. In maintaining this relationship, the camshaft drive causes the camshaft to rotate at ?

130. How do you control freshwater heating temperature in the evaporator side of a Fresh Water Generator?

80. The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing work. This is known as ?

126. Which of the following would result if the temperature of the fuel to the burners is too low?

73. What is the purpose of the boiler drum air cock?

82. An engineer on duty inspecting an unmanned engine room at night should be aware of which of the following precautions ?

55. Why is the heating capacity of the fuel oil heater reduced when there is a build up of carbonization in the heater surfaces ?

81. When operating under constant load, the superheated steam temperature may rise above normal it

142. How does a quick closing valve operate?

40. If the control pressure for an automatic combustion control system is lost during maneuvering, you should

87. The pressure developed in the high pressure cylinder of a reciprocating air compressor, in order to assure an output near the end of its compression stroke, is ?