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

102. What utilizes a pure transducer utilizes?

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

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

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

45. The following are rating of circuit breakers except

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

132. When paralleling two alternators, the synchronizing lamps remain lit as the synchroscope pointer approaches the 0° position. This indicates the ?

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

138. The purpose of checking the electrical installations, equipments, etc. using a megger tester?

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 ?

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

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

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

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

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?

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

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

108. The type of feature afforded to auxiliaries vital to the operation of propelling equipment, where automatic restart after a voltage failure would not create a hazard, which of the following termed is used to describe the process?

144. What is known as a conduction carrier opposite to the majority current carrier which are represented by the holes in N-Type material and free electrons in a P-Type material?

8. An instantenous trip type fuse will ?

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

81. Listed are the types of circuit breakers except?

113. In a simple DC circuit, the resistance is held constant when the applied voltage is halved. Current flows therefore will

120. The capacitance is measured in ?

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?

125. Determine the main difference of marine high voltage installaqtion compared to low voltage installation onboardship.

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

104. What methods are used to control the time that current is limited before full currentis applied ?

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

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

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

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

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

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

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

111. Which of the following statements is true concerning a polyphase synchronous propulsion motor?

133. Which one of the following is best described as the combinations of electrical disconnect switches and circuit breakers that are used to control, protect and isolate high-voltage electrical equipment ?

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

137. Which of the following is not provided in a switchboard for an AC electrical distribution system?

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

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?

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

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

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

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

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

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

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?

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

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

128. For a galley equipment the molded case breaker that provide protection against short circuits uses a/an________?

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

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

123. The type of permanent magnets are normally made of ?

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

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

134. Prior to starting an AC generator prime mover, the voltage regulator cut out switch should be placed in which of the following position?

11. A bus disconnect link is used to isolate?

20. 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

119. The dielectric strength of transformer oil is expected to be

101. Depending upon the design of boiler, the constant pressure maintained at the steam drum or the superheat outlet is known as?

129. Which one of the following best describes the meaning of the term atrackinga when applied to high voltage electrical systems?

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?

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

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?

124. The speed of a squirrel-cage , multi-sspeed induction motor, as used aboardship, is best varrried by changing the

140. In process control terminology values which can change without distinct increments, such as temperature, pressure or level are called

105. What is a kind of temperature detecting element formed by a pair of dissimilar metals joined at one end and elsewhere isolated electrically from each other which produces a small electrical signal?

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

103. The total heating surface of any steam generating unit is comprised of?

114. Which of the following statement will affect he capacity value of a capacitor ?

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

122. The speed of a series wound winch motor is controlled by:

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

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

109. Which of the following is required onboard, to perform before any work on a high voltage equipment commences to ensure that any stored electrical energy in the inherent capacitance of the equipment insulation is safely discharge after isolation?

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

117. Re-circulating of the feed water ensures a flow of water through?

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

136. What might be the cause if an electric motor of an electric driven compressor fails to start?

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?

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?

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 ?

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

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

121. A low-voltage protection circuit is used in electric motor starting equipment to

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

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

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_

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?

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?

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

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

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

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?

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

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 ?