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1. What is the function of a full torque electric brake in an electric cargo winch?.

 
 
 
 

2. Silicone diodes designed for a specific reverse breakdown voltage, become useful as an electronic power supply voltage regulator, called ___________.

 
 
 
 

3. Which of the listed devices may be used as a digital device?.

 
 
 
 

4. Which of the listed conditions is an advantage of PN diode over a vacuum diode?.

 
 
 
 

5. Which of the following statements comparing transistors and vacuum tubes is correct?.

 
 
 
 

6. Which of the listed devices is used to measure pressure and convert it to electric signal?.

 
 
 
 

7. The process whereby the electrons gain sufficient energy to be release from the surface of a thin, heated metal plate, is known as _________.

 
 
 
 

8. The main difference between an electron tube and transistor is the _________.

 
 
 
 

9. Which of the following statements is correct concerning the circuits in a sound powered telephone system?.

 
 
 
 

10. The Wheatstone bridge is a precision measuring instrument utilizing the principle of changes in _________.

 
 
 
 

11. The use of four diodes, in a full-wave bridge rectifier circuit will __________.

 
 
 
 

12. Moisture as a result of condensation occuring inside of the cargo winch master switches, can be reduced by ________.

 
 
 
 

13. A semiconductor that decrease in resistance with an increase in temperature is known as a __________.

 
 
 
 

14. When trouble shooting most electronic circuits,

 
 
 
 

15. How does the equalization of the power factors of two alternators operating in parallel is accomplished?.

 
 
 
 

16. Which of the following devices may be used as a digital device?.

 
 
 
 

17. With regards to pilot controlled pneumatic regulating valves, the spring force of the regulating valve should be adjusted to ________.

 
 
 
 

18. What type of controller system usually used on exhaust range pressure control?.

 
 
 
 

19. A control system in which one controller provides the command signal to one or more other controllers __________.

 
 
 
 

20. It is a control system in which one controller provides the command signal to one or more other controllers __________.

 
 
 
 

21. The boiler water level controller uses a/an _________.

 
 
 
 

22. What type of controller system is applicable where a plant has long time delays between changes in the measured value and their correction?.

 
 
 
 

23. What type of controller whose action is used in conjunction with proportional control in order to remove any offset?.

 
 
 
 

24. It is a sustained deviation as a result of a load change in the process called _______.

 
 
 
 

25. The amount by which the input signal value must change to move the correcting unit between its extreme position is called ________.

 
 
 
 

26. What are the two most common gases used in pneumatic systems?.

 
 
 
 

27. What is the main function of response line in a pneumatic proportional action controller?.

 
 
 
 

28. A close loop pneumatic control system always operates with ________.

 
 
 
 

29. With regards to a direct acting air pilot relay, an increase in the value of the controlled pressure will strike the pilot valve stem, causing the _______.

 
 
 
 

30. The power necessary to strike a diaphragm control valve, as used in a pneumatic control system, is supplied by the _________.

 
 
 
 

31. What will happen if there is any restriction in the instrument air piping of a pneumatic control system?.

 
 
 
 

32. What will happen if you turn the hand wheel clockwise of a spring-loaded, internal pilot, reducing valve?.

 
 
 
 

33. Regarding the reducing valve, the spring force as a result of compression from turning the hand wheel, is balanced by the ____________.

 
 
 
 

34. If a delicate component must be soldered into a circuit, the component may be protected from the heat of the soldering process by __________.

 
 
 
 

35. How could we determine the correct resistance value of a resistor in a circuit?.

 
 
 
 

36. When trouble shooting an electronic circuit, a cold solder joint can be located with the aid of an ohmmeter then __________.

 
 
 
 

37. If a solid-state circuit is inoperative, what is the FIRST action that you should take?.

 
 
 
 

38. When testing a capacitor with an analog type ohmmeter, a good capacitor will be indicated when __________.

 
 
 
 

39. In a simple series circuit, the entire source voltage will drop across __________.

 
 
 
 

40. If a full-wave rectifier has one diode burned out in an open conditions, what will be the output characteristics o the device?.

 
 
 
 

41. As a characteristics of a controller, which of the following statements best describes sensitivity?.

 
 
 
 

42. As a result of control action sensed by a controller, it is known in automation as _______.

 
 
 
 

43. What is the most appropriate device to be installed at the control system of air pressure reducing station?.

 
 
 
 

44. What is the computing relay being used in a pneumatic control system?.

 
 
 
 

45. Which of the following statements concerning the operation of steam pressure reducing valves is correct?.

 
 
 
 

46. If the dual pressure-temperature regulator is adjusted by turning the stem clockwise and the adjusting ring counterclockwise will result in _________.

 
 
 
 

47. Double seated, pneumatically controlled, regulating valves exhibit good balancing characteristics essential for low sensitivity application because _________.

 
 
 
 

48. In spring opposed, diaphragm-type, pneumatic power unit, the force exerted on the spring is equal to the air pressure multiplied by ________.

 
 
 
 

49. When replacing a steam pressure reducing valve, what is required for selection?.

 
 
 
 

50. Automatic control valves for steam service require periodic maintenance inspections because they ________.

 
 
 
 

51. Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________.

 
 
 
 

52. What do you call the ratio of output response to a specified change in the input?.

 
 
 
 

53. What kind of control system is appropriate for meat box temperature control circuit which is used in ship

 
 
 
 

54. How will a molded case circuit breaker reacts after it has tripped as result of an overload circuit?.

 
 
 
 

55. It was the fabrication of this component that finally made it possible to construct extremely small but highly efficient electronic circuit called _________.

 
 
 
 

56. When replacing a power resistor fitted with heat sink in a circuit, a coating of silicone grease is applied between the transistor case and the heat sink to ________.

 
 
 
 

57. You have installed a Zener diode in parallel with load. While measuring the voltage across the Zener diode it is found that it does not change as the current through load increases which means _________.

 
 
 
 

58. Which of the following is being expressed in RMS value of a sine-wave current?.

 
 
 
 

59. Which process control terminology can change Without distinct increments such as temperature, pressure, or level?.

 
 
 
 

60. What starts love horse power, Polyphase, and induction motors to a full voltage?.

 
 
 
 

61. Which among the following is the main purpose of DC generator brushes?.

 
 
 
 

62. What is the term of process control that can change Without distinct increment such as temperature, pressure, or level?.

 
 
 
 

63. What value measures wave forms for the ammeters, and voltmeters used in sinusoidal AC power system?.

 
 
 
 

64. Among the following, how man degrees apart is the phase voltage in a three-phase circuit?.

 
 
 
 

65. Which of the following values is expressed in RIMS value of sine-wave current?.

 
 
 
 

66. Among the following, which has the same polarity direction of the rotation?.

 
 
 
 

67. What is being avoided if no fuse breaker's function is to isolate the defective circuit from the system?.

 
 
 
 

68. The process of reversing a current through individual armature coils and then conducting the direct current to the external circuit durinu the brief interval of time each communicator segment is passing under a brush is called.

 
 
 
 

69. Which of these is another term for No fuse breaker?.

 
 
 
 

70. Which of the following is the main purpose of DC generator brushes?.

 
 
 
 

71. Which process control terminology can change without distinct increments such as temperature, pressure level?.

 
 
 
 

72. The condition where the governor frequency of the incoming generator is than the bus frequency is indicated by the fast clockwise rotation of the synchroscope pointer.

 
 
 
 

73. What is the process of reversing the current through individual armature coils and then conducting tile direct current to the external circuit during the brief interval of time each commutator segment is passing under a brush?.

 
 
 
 

74. If an electric motor has been long stopped, what must the operator ensure before starting it?.

 
 
 
 

75. What is the category of an AC motor used on board that operates on direct current?.

 
 
 
 

76. What is the major factor ion reducing DC motor communicator wear?.

 
 
 
 

77. Which is an important factor in reducing DC motor communicator wear? I- Keep the ambient temperature as low as possible II- Establishing the copper oxide sulfur film III- Ensuring a very low brush current.

 
 
 
 

78. Among the following, which is to be considered if a ground generator has no-load voltage of 250 volts and a full-load voltage of 220 volts?.

 
 
 
 

79. Which of the list causes the DC motor brushes to spark?.

 
 
 
 

80. Which of these is the function of DC generator brushes?.

 
 
 
 

81. What is being conducted with regular intervals?.

 
 
 
 

82. What is being called as the immovable part of an electric motor?.

 
 
 
 

83. Battery rooms must be well ventilated to.

 
 
 
 

84. When used in the ship service refrigeration, which of the following does the example meat box temperature control circuit belongs?.

 
 
 
 

85. Which of the following mode of control can you find in the cylinder unloading mechanism used on low pressure air compressor?.

 
 
 
 

86. Among the following, which is the steady state difference between the control point and the value of the controlled variable corresponding with the set point?.

 
 
 
 

87. The type of control mode where offset is an inherent characteristic is.

 
 
 
 

88. The drawback of proportional-position action is the.

 
 
 
 

89. The certain condition and quantity that is being measured and controlled is called.

 
 
 
 

90. Which of the following is the controlled action that produces a corrective signal relative to the speed at which the controlled variable is changing?.

 
 
 
 

91. The type of control mode that is generally unused by itself is called.

 
 
 
 

92. Which of the following will be the result of the reset action is added to proportional action?.

 
 
 
 

93. Another term for reset control is.

 
 
 
 

94. Which of the following is another term for the value of the controlled variable under certain fixed set of conditions where the automatic controller operates to maintain?.

 
 
 
 

95. The advantage of pneumatic control systems over electrical control systems in relation top fluid control flow is.

 
 
 
 

96. The particular equipment that can be operated from the main engine room console in an automated vessel is the:.

 
 
 
 

97. Which of the following device prints a permanent record of plant operating condition?.

 
 
 
 

98. Which of the following causes the problem if both the high level and low level alarms come on for tile same address of a centralized control console?.

 
 
 
 

99. Which of the following causes prevention for a diesel driven emergency generator from being paralleled with the ship's service generators?.

 
 
 
 

100. What will happen if a ship with an automated engine room system develops a high boiler water level at half speed?.

 
 
 
 

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