Assessment Test

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1. Coast Guard Regulations (46 CFR), require each motor controller to have a wiring diagram located __________.

 
 
 
 

2. When power ventilation is required in a battery compartment, Coast Guard Regulations (46 CFR) require __________.

 
 
 
 

3. Which of the following statements, regarding Coast Guard Regulations (46 CFR), is correct concerning electric engine order telegraphs?

 
 
 
 

4. Which of the following devices for a lifeboat winch electrical circuit automatically prevents the davit arms of a gravity-type unit from over traveling their tracks when raising the lifeboat?

 
 
 
 

5. Coast Guard Regulations (46 CFR Part 111.70) require which of the listed features to open the power circuit to a motor due to low voltage and re-close when the voltage is restored to normal?

 
 
 
 

6. Coast Guard Regulations (46 CFR) require over-current protection for steering gear feeder circuits and shall be protected by __________.

 
 
 
 

7. Coast Guard Regulations (46 CFR Part 111) permit which of the listed types of fuses to be used in an interior lighting circuit?

 
 
 
 

8. In accordance with Coast Guard Regulations (46 CFR), the capacity of each branch circuit providing power to a fire detection or alarm system must not be less than what percent of the maximum load?

 
 
 
 

9. Coast Guard Regulations (46 CFR) require that each alternating current generator arranged for parallel operation shall be provided with __________.

 
 
 
 

10. Coast Guard Regulations (46 CFR) require instrument and control wiring in a switchboard to be of what minimum size?

 
 
 
 

11. Which of the following statements is/are true regarding requirements for receptacle outlets aboard vessels?

 
 
 
 

12. In accordance with Coast Guard Regulations (46 CFR), a circuit breaker located in the machinery space and installed in a 440V AC system must __________.

 
 
 
 

13. According to U. S. Coast Guard Regulations (46 CFR), the motor controller for a submersible electric motor driven bilge pump should be installed __________.

 
 
 
 

14. Where automatic restart does not present a hazard after a power failure, Coast Guard Regulations (46 CFR) require motor controllers for auxiliaries vital to the propelling equipment to be provided with __________.

 
 
 
 

15. Which of the following is/are true concerning electric power operated watertight door systems?

 
 
 
 

16. Electrical wire in general when used aboard vessels must meet minimum requirements, which of the following statements is/are correct?

 
 
 
 

17. Coast Guard Regulations (46 CFR), require that an indicating light at the propulsion control station will operate if overloading or overheating occurs in a __________.

 
 
 
 

18. When changing fuses, you should always __________.

 
 
 
 

19. When maintenance personnel are working on electrical equipment, all supply switches should be secured in the open position and tagged specifically by the __________.

 
 
 
 

20. Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out?

 
 
 
 

21. Which of the following precautions should be taken when a blown fuse rated at 10 amperes is replaced?

 
 
 
 

22. All electric cables passing through watertight bulkheads must be __________.

 
 
 
 

23. The shipboard general alarm system must receive its main source of power from __________.

 
 
 
 

24. Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component?

 
 
 
 

25. Coast Guard Regulations (46 CFR) require that lighting fixture globes must be protected by guards if the fixtures are located in the __________.

 
 
 
 

26. Which of the spaces listed is defined as a 'location requiring an exceptional degree of protection' when considering the installation of shipboard electrical equipment?

 
 
 
 

27. According to Coast Guard Regulations (46 CFR), the talking and calling circuits of a sound powered telephone system must be __________.

 
 
 
 

28. When a voltage of 132 VDC is applied to the circuit with a resistance of 237 ohms the current will be __________.

 
 
 
 

29. When a voltage of 132 VDC is applied to the circuit with a resistance of 10,230 ohms the current will be __________.

 
 
 
 

30. If a voltage of 132 VDC is applied to the circuit where the resistance is 12 ohms, then current will be __________.

 
 
 
 

31. If a current of 30 amperes flows to the line voltage of 440 volts, the resistance of a wire will be __________.

 
 
 
 

32. If a current of 15 amperes flows to the line voltage of 110 volts, the resistance of a wire will be __________.

 
 
 
 

33. If a current of 7 amperes flows to a wire with a resistance of 30 ohms, the line voltage is __________.

 
 
 
 

34. If a current of 14.667 amperes flows to a wire with a resistance of 30 ohms, the line voltage is __________.

 
 
 
 

35. If a current of 15 amperes flows to a wire with a resistance of 6.66 ohms, the line voltage is __________.

 
 
 
 

36. If a current of 3 amperes flows to the line voltage of 100 volts, the resistance of a wire will be __________.

 
 
 
 

37. Ambient temperature is the __________.

 
 
 
 

38. The load sharing characteristics of two diesel alternators operating in parallel are directly related to the setting of their governors' __________.

 
 
 
 

39. The most common type of AC service generator found aboard ship is the stationary __________.

 
 
 
 

40. Upon failure of the normal power supply, the emergency generator is placed on the line by the __________.

 
 
 
 

41. The division of the reactive KVA load between paralleled AC generators is initiated by the __________.

 
 
 
 

42. The three factors responsible for the change in voltage as load is applied to an AC generator are: 1) the drop in resistance in the armature circuit, 2) the change in flux, and 3) the __________.

 
 
 
 

43. In a 60 Hz AC system, the current will pass through one complete cycle in __________.

 
 
 
 

44. Diesel generators #1 and #2 are operating in parallel at near full load capacity. Diesel generator #1 suddenly trips out mechanically due to low lube oil pressure. The reverse power relay functions properly and trips generator #1 electrically off the board. Which of the following actions should you carry out first?

 
 
 
 

45. A storage battery for an emergency lighting and power system must have the capacity to __________.

 
 
 
 

46. Coast Guard Regulations (46 CFR Part 120) state that bba normal source for emergency loads and power on a cargo vessel must be supplied from __________.

 
 
 
 

47. Coast Guard Regulations (46 CFR) require that the emergency lighting and power system __________.

 
 
 
 

48. In accordance with Coast Guard Regulations (46 CFR), the emergency generator set aboard an 1800 GT tank ship in ocean service, must be capable of supplying an emergency source of power for a minimum period of __________.

 
 
 
 

49. Coast Guard Regulations (46 CFR) require that automatic transfer to the emergency diesel generator(s) assume loads as soon as __________.

 
 
 
 

50. In accordance with Coast Guard Regulations (46 CFR), 'corrosive location' means a/an __________.

 
 
 
 

51. The most practical method used for resurfacing a ship's main propulsion motor commutator is to __________.

 
 
 
 

52. When using a megohmmeter to determine which shunt field coil is grounded in a DC machine, you must __________.

 
 
 
 

53. 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 __________.

 
 
 
 

54. Electric coupling excitation is reduced at slow speeds to __________.

 
 
 
 

55. Commutators, brushes and slip rings are not intended for the operation of __________.

 
 
 
 

56. Thermistor is a semiconductor that increases in resistance while increasing its __________.

 
 
 
 

57. Small generator installed on the engine supply engine speed signal to __________.

 
 
 
 

58. Emergency diesel engine starting systems must have a sufficient capacity to provide power of at least __________.

 
 
 
 

59. Storage battery onboard the ship used for emergency lighting and power system must have the capacity to close all water tight doors at least __________.

 
 
 
 

60. It is a requirement that an emergency generator must have an automatic shutdown if the engine experience __________.

 
 
 
 

61. It is a requirement that fuel oil tank of an ocean going vessels emergency generator is capable of supplying fuel to a fully loaded engine for at least __________.

 
 
 
 

62. When troubleshooting most electronic circuits, 'loading effect' can be minimized by using a voltmeter with a/an __________.

 
 
 
 

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

 
 
 
 

64. In a diesel electric plant, raising the generator's field excitation will cause the DC propulsion motor to __________.

 
 
 
 

65. As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to __________.

 
 
 
 

66. The part of a fuse that melts and opens an electrical circuit is typically made of __________.

 
 
 
 

67. To effectively clean a commutator in good physical condition, you should use __________.

 
 
 
 

68. Before reassembling any electrical machinery, you should __________.

 
 
 
 

69. A common source of field excitation for synchronous motors is a/an __________.

 
 
 
 

70. The most common source of excitation for the rotor of a synchronous motor is a/an __________.

 
 
 
 

71. Which of the listed precautions should be observed before spraying liquid solvent on the insulation of an electric motor?

 
 
 
 

72. The simplest method of controlling the terminal voltage of compound-wound DC generator is with a __________.

 
 
 
 

73. A damper winding is designed as part of a synchronous motor to __________.

 
 
 
 

74. The insulation resistance of electric equipment and machinery should be tested for the lowest normal insulation values __________.

 
 
 
 

75. Which of the terms listed best describes a compound wound DC generator having a higher voltage at no load than at full load?

 
 
 
 

76. The speed of a squirrel cage induction motor is determined by the __________.

 
 
 
 

77. Copper is often used as an electrical conductor because it __________.

 
 
 
 

78. A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to __________.

 
 
 
 

79. The speed of a three-phase squirrel-cage induction type motor operating in a fixed frequency system is varied by changing the __________.

 
 
 
 

80. The multiple prefix 'kilo' means __________.

 
 
 
 

81. The purpose of a heat sink, as frequently used with transistors, is to __________.

 
 
 
 

82. Batteries used for diesel engine starting should __________.

 
 
 
 

83. In a DC series circuit, all the conductors have the same __________.

 
 
 
 

84. Battery charging rooms should be well ventilated because the charging process produces __________.

 
 
 
 

85. When a megohmmeter is used to test insulation, the gradual rise of the pointer reading as a result of continued cranking, is caused by __________.

 
 
 
 

86. Which of the AWG wire sizes listed below would have the smallest diameter?

 
 
 

87. When using a megohmmeter to test insulation, good insulation will be indicated by __________.

 
 
 
 

88. Exposed metals parts of electrical equipments which are not intended to be lived but which are liable under fault condition to become live shall be earthed unless the machine or equipment is __________.

 
 
 
 

89. All electrical apparatus shall be so constructed and so installed as not to cause injury when handled or __________.

 
 
 
 

90. The front and rear section of the switchboard shall be provided with __________.

 
 
 
 

91. Earthed distribution systems shall not be used in a tanker, but the administration may exceptionally permit provided that any possible resulting current does not flow directly through any of the __________.

 
 
 
 

92. Accumulator batteries shall be suitably housed and efficiently ventilated and compartments shall be used primarily for __________.

 
 
 
 

93. All electrical lightings and power circuits terminating in a bunker or cargo space shall be provided with a multiple-pole switch outside the space for __________.

 
 
 
 

94. Part of an electric cargo winch that automatically hold the load as soon as the current to the machine is shut off is called __________.

 
 
 
 

95. If an alternating current motor is started and produces 25 horsepower when it run, the generator panel board KW meter reading will show an increase of approximately __________.

 
 
 
 

96. As provided by Coast Guard Regulations (46 CFR Part 111), which of the following is true concerning flexible electric cord and cable used aboard ship?

 
 
 
 

97. Coast Guard Regulations (46 CFR) requires that each electrical receptacle is to have a grounding pole, but only if it __________.

 
 
 
 

98. Coast Guard Regulations (46 CFR) prohibit the use of portable electric cord or fixture wire aboard ship if that wire or cord is smaller than __________.

 
 
 
 

99. If a steering motor becomes overloaded, the __________.

 
 
 
 

100. Coast Guard Regulations (46 CFR Part 111) state that transformer windings must be resistant to __________.

 
 
 
 


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