1. What will happen if a low impedance connection is accidentally created across a charged capacitor within a high-voltage electrical network?

2. When troubleshooting an electronic circuit, a cold solder joint can be located with the aid of an ohmmeter. Once the problem has been located, what should you do next?

3. What kind of overload relay that is being actuated by an electromagnetic coil ?

4. What kind of resistance thermometer utilizes semi-conductor material which have a characteristic of a resistance decrease with temperature increase?

5. What is the ratio of effective value of the counter EMF in volts to the effective value of the current in amperes?

6. The amount of sodium phosphate in treated boiler water can be measured by ?

7. What determines the power factor of an electrical distribution system being supplied by a single AC generator?

8. An instantenous trip type fuse will ?

9. What is the transformer winding where power source is connected?

10. When a solid-state component of an electronic circuit is mounted to a metalic mass, the general purpose of that mass is to

11. A bus disconnect link is used to isolate?

12. After clipping the two leads together, prior to taking a resistance reading with a volt-ohmmilliammeter, the 'zero' setting must be adjusted. ylf you find the adjustment knob will not return the pointer to 'zero'. it is likely an indication of ?

13. Electric propulsion coupling excitation is reduced at slow speed to

14. Which of the following problems will most likely occur if the starting winding of a split-phase induction motor failed to cutout once the motor was in continuous operation ?

15. What do you call the emission of electrons from hot bodies?

16. Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components?

17. The first requirement for logical trouble shooting of any system is the ability to

18. What is the use of a magnetic blowout coil in a ship,s crane using DC motor controller contactor ?

19. In SF6 circuit breakers what is the meaning of SF6?

20. When trouble shooting electronic equipment, you should use a high impedance multimeter

21. How would you show your understanding to a communication device that allows to talk to each other with the use of a handset, similar to a conventional telephone but without the use of external power?

22. In a liquid dielectric, which of the following impurity has significant effect in reducing the breakdown strength ?

23. A loss of field excitation to an AC generator while operating in parallel will cause to

24. On an engine throttle control system, the auxiliary control circuits are provided with devices to prevent excessive over travel of the pilot valve by the synchronous motor. These devices are called_

25. In a faceplate-type motor starter, the starting arm is held in the 'OFF' position by alan

26. The shunt use in an ammeter should be connected to?

27. Which of the following statements concerning analog and digital devices are correct?

28. What do you call an instrument that used to measure the specific gravity of the electrolyte in a rechargeable battery ?

29. To locate a grounded field coil in a synchronous motor, which of the instruments listed could be used ?

30. You are attempting to parallel two AC generators, and the synchroscope pointer is revolving past in the clockwise direction. What indicates that the frequency of the incoming machine?

31. It is defined as the movement of electrical charge (the flow of electrons) through an electrical circuit is called ?

32. What represents an application of a silicon controlled rectifier?

33. In a circuit that is not energized, which of the listed instrument is used ?

34. How is the operator ensured that he is not in contact with any unearthed conductor before insulation resistance(IR) measurement of a HV system?

35. What is the process of breaking up fuel oil into fine particles to ensure good combustion?

36. How do shipboard electrical cables cross-sectional area express?

37. RTD type sensor utilizes which principle in temperature measurement?

38. What is the first step in removing a generator from parallel operation.

39. Which of the following indicate when paralleling two alternators, the synchronizing lamps remain lit as the synchroscope pointer approaches the 0° position?

40. What cause the main feed pump which can handle high temperature water without becoming vapor bound?

41. What is the degree angle when the voltage and current are out of phase so that the true power is equal to zero?

42. The following are main things you should ccheck when synchronizing a generator except for?

43. What type of widely used thermocouple, also termed as Ni-Chromium/Ni-Alumel, with enhanced reliability, preciseness, inexpensive and operate at temperature ranges between -270 to 1,260 degc?

44. Ammeters and voltmeters use in a sinusoidal AC power system indicates which of the following values of the waveforms measured?

45. The following are rating of circuit breakers except

46. a triac thyristor functions as a control device and is basically

47. In a three-phase electrical system, three ground detecting lamps are provided. One lamp goes dark and the others increase in brightness. When the test button is pushed, all lamps have equal illunination. You should called that

48. While starting a synchronous motor, the ammeter pegs out at maximum and then returns to the proper value after synchronization. What is this an indication of?

49. When using an ohmmeter to test a semi conductor diode, you find a low resistance in both forward and reverse bias direction. This indicates that the diode is,

50. On a vessel with turbo-electric drive, which of the following conditions would indicate that the propulsion motor had cut-out from synchronization with the propulsion generator ?

51. A field effect transistor function that reduces number of current carries passing through its channel

52. Which of the listed pairs of materials make the best insulators ?

53. All portable electric tools should have a ground connection to prevent ?

54. The governor control switch of an alternator is move to the raised position. This action will

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

56. When trouble shooting electronic equipment, you should use a high impedance multimeter.

57. The standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator is accomplished by adjusting the

58. When trouble shooting electronic equipment, the first step to be taken before testing the circuit voltage i

59. What device that gives the information about the speed of a motor in D.C. Generator?

60. A ship is generating 8MW of power at 440V from 4 diesel generator of 2MW 0.8 power factor each. How much full-load current each generator feeder cable and circuit breaker be able to handle?

61. It is a type of motor that is almost the same as an alternator .

62. To minimize magnetic field interaction between electrical conductors in physical proximity, it is best to keep them?

63. To be considered as High Volatge system used on board a ship, how much should be the minimum voltage?

64. The magnetic energy of a transformer when created will further induced current in the ?

65. When the voltage and current developed in AC circuit reached thier peak value at the same time, the power factor is?

66. In general, polyphase induction motors can be started on full line voltage by what means?

67. What do you call a conductor carrier opposite to the majority current carrier which are represented by the holes in n-type material and free electrons in p-type material?

68. What is being used to indicate whether the alternator is running faster or slower than the other. What is this device installed in the main switchboard?

69. When trouble shooting most electronic circuits, "loading effect" can be minimized by using a volt volt meter with alan

70. On a vessel with turboelectric drive, which of the following conditions would indicate that line propulsion motor had dropped out synchronization with the propulsion generator?

71. Which of the stated pressure conditions identifies the boiler design pressure?

72. Regarding and AC generator connected to the main electrical bus; as the electric load and power factor vary, a corresponding change is reflected in the generator armature reaction. These changes in armature reaction are compensated for by the

73. Which of the following is developed whenever there is a relative motion of action between a magnetic field and a conductor ?

74. Four lamps are connected in parallel in a single circuit. If one of the lamp burns out, theothers will

75. A closed loop control system which enables two or more valves operated by one controller is known as

76. On some diesel-electric ships, the DC propulsion motor will only attain half speed when the generator fields are fully excited. Speeds above this are obtained by?

77. Which of the following may cause a single-phase induction motor fails to start?

78. A ship is generating 8MW of power at 440V from 4 diesel generator of 2MW 0.8 power factor each. How much full-load current each generator feeder cable and circuit breaker be able to handle? Option 1(ANSWER): 3,280 Amperes Option 2: 4,050 Amperes Option 3: 1,500 Amperes Option 4: 2,850 Amperes

79. Which of the following statement is true concerning a step-down transformer in an operating AC power circuit?

80. Why is corrosion due to electrolytic action in modern water-tube boilers is uncommon?

81. Listed are the types of circuit breakers except?

82. Which of the following refers to a characteristics of a magnetic line of force?

83. Which of the following values of the waveforms measured in ammeters and voltmeters?

84. When trouble shooting an electronic circuit, a cold solder joint can be located with the aid of an ohmmeter. Once the problem has been located , you should,

85. Two paralleled alternators are operating near rated load. If one trips out mechanically, which of the listed actions should be taken first?

86. Ships fitted with high-voltage installations tend to use earthed neutral electrical networks. Which one of the following best describes how excessive fault currents are prevented in the event of an earth fault on these ships?

87. Silicon diodes designed for a specific reverse breakdown voltage, become useful as an electronic power supply voltage regulator, called,

88. A ground on a particular phase of a three phase low voltage system would be indicated by ?

89. How can the hot spots in the bus bar or surrounding area be checked safely?

90. In electronic industry, the abbreviation "PCB" commonly means

91. What do you call a direct current passing through a wire coiled around a soft iron core?

92. In synchronizing a generator with other generator, it is required that the voltage and frequency of the incoming generator is

93. Equal power factors on paralleled AC generator are maintained by an automatic

94. When electrocuted, how much current may lead to loss of muscular control?

95. Which of the following refers to a characteristics of a magnetic line of force ?

96. What do you call a motor using a rheostat in the motor circuit to vary the speed?

97. What is the part of the shipboard electrical system used to control the distribution of power to the branch circuit?

98. What is the main reason in using an electronic megger tester essentially for polarization index or Pi test.

99. To provide its unique characteristics to analog circuits, the operational amplifier is made up of alan

100. What would you obtain if you measure voltage and current in an inductive or capacitive circuit and then multiply them together?