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U.S.C.G. Merchant Marine Exam

Chief Engineer-Limited

Q604 Electrical-Electronic-Control Engineering

(Sample Examination)

of 37 Q604 Electrical-Electronic-Control Engineering

8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20

Choose the best answer to the following Multiple Choice Questions.

1. What can a typical common analog or digital multimeter be used to measure?

o (A) voltage, power, and current o (B) frequency, current, and resistance • (C) voltage, resistance, and current o (D) voltage, frequency, and current

If choice C is selected set score to 1.

2. As shown in figure "A" of the illustration, under what conditions will the thyristor conduct? Illustration EL-0154

• (A) when the anode is more positive than the cathode and when the gate is briefly pulsed with a voltage more positive than the cathode

o (B) when the anode is more negative than the cathode and when the gate is briefly pulsed with a voltage more positive than the cathode

o (C) when the anode is more positive than the cathode and when the gate is briefly pulsed with a voltage more negative than the cathode

o (D) when the anode is more negative than the cathode and when the gate is briefly pulsed with a voltage more negative than the cathode

If choice A is selected set score to 1.

3. Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?

• (A) The 24 volt DC bus o (B) The 120 volt, 60 cycle, 3-phase bus o (C) The 450 volt, 60 cycle, 3-phase bus o (D) The generator and bus transfer section


4. What will happen to a carbon resistor operating in electrical equipment that is NOT properly cooled?

o (A) it will change its value inversely proportional to the amount of heat generated and time in service

• (B) its reliability factor will decrease o (C) its reliability factor will increase o (D) it will always operate at the same ohmic value

If choice B is selected set score to 1.


8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 5. What is the device shown in figure "B" of the illustration between the source circuit breaker and the

load? Illustration EL-0083

o (A) fluorescent light ballast o (B) power factor correction inductor • (C) autotransformer o (D) noise filtering choke


6. Which of the following describes the action when the handle is moved to the "start" position of a drum-type motor controller used with a compound wound DC motor?

o (A) Full line voltage is supplied to the shunt field, series field, and armature. o (B) Reduced voltage is supplied to the shunt field, series field, and armature. • (C) Full line voltage is supplied to the shunt field, and reduced voltage is supplied to the series

field and the armature. o (D) Full line voltage is supplied to the shunt and series fields, and reduced voltage is supplied to

the armature.


7. As shown in the illustration, what is the purpose of the Time Delay (TR) coil in the circuit? Illustration EL-0104

o (A) Ensures the motor cannot be started until the overload relays are reset. • (B) Allows the motor to come up to speed at reduced voltage before bypassing the starting

resistors. o (C) Ensures the motor cannot be started until the accelerating coil is energized. o (D) Allows the motor to come up to speed before placing the starting resistors in the circuit.


8. As shown in figure "D" of the illustrated digital power meter, what type of single-phase load is under test for power measurement? Illustration EL-0256

o (A) a purely inductive load o (B) a purely resistive load o (C) a resistive-capacitive load • (D) an inductive-resistive load

If choice D is selected set score to 1.


8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 9. On an older two-generator, two-motor DC diesel-electric drive system as shown in the illustration,

what are the characteristics of the main propulsion generators? Illustration EL-0141

o (A) The generators of are the direct current type whose output voltage is varied by varying the generator rotational speed and whose output polarity is reversed by reversing the generator armature direction of rotation.

• (B) The generators of are the direct current type whose output voltage is varied by varying the generator field strength and whose output polarity is reversed by reversing the generator field polarity.

o (C) The generators of are the alternating current type whose output voltage is varied by varying the generator rotational speed and whose output phase sequence is reversed by reversing the generator rotating field direction of rotation.

o (D) The generators of are the alternating current type whose output voltage is varied by varying the generator field strength and whose output phase sequence is reversed by reversing the generator field polarity.


10. Why is it necessary to perform periodic testing of correctly rated and properly installed circuit breakers?

o (A) to insure they will be able to withstand at least 125% of applied voltage o (B) to insure they can trip faster as they increase in age • (C) to insure they will continue to provide the original degree of protection o (D) to insure they do not exceed their interrupting capacity


11. What is the maximum current allowed to be drawn from the secondary of a 2 kVA step-down transformer with a turns ratio of four to one if connected across a 440 volt line?

o (A) 1.1 amps o (B) 4.5 amps • (C) 18.1 amps o (D) 22.7 amps


12. Using the trouble analysis chart and faults table provided in the illustration, if the gyrocompass was malfunctioning, but no fault codes are present on the display unit, what is most likely the problem if the DC/DC converter LED status indicator is functioning properly, but the CPU LED status indicator is not blinking? Illustration EL-0195

o (A) The DC/DC converter is malfunctioning. o (B) The AC/DC power supply is malfunctioning. • (C) The CPU assembly is malfunctioning. o (D) Ship's power is not available.



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 13. A very useful Windows utility for discovering or verifying IP addressing information of a network is

"ipconfig". How is this utility program launched?

o (A) It is run by clicking on the TCP/IP shortcut icon on the desktop. o (B) It is run by clicking on the "ipconfig" icon in start menu or under programs. o (C) It is run from the command prompt screen by default by simply bringing up the command

prompt. • (D) It is run from the command prompt screen by typing "ipconfig/all".


14. An ohmmeter used to test for front-to-back resistance of a PN junction diode should produce roughly what ratio?

• (A) 100:1 o (B) 500:1 o (C) 1000:1 o (D) 5000:1


15. When a high voltage system insulation test value is suspect or recorded during an annual survey, a polarization index test is performed. What is the polarization index?

o (A) The polarization index is the ratio of the insulation resistance taken at one minute to the insulation resistance taken at ten minutes.

o (B) The polarization index is the ratio of the insulation resistance taken at thirty minutes to the insulation resistance taken at one minute.

o (C) The polarization index is the insulation resistance taken at ten minutes. • (D) The polarization index is the ratio of the insulation resistance taken at ten minutes to the

insulation resistance taken at one minute.


16. When troubleshooting a printed circuit board, one technique that can be used is component substitution. Upon what basis would a suspected defective component be substituted with a known good component?

o (A) Component substitution is not recommended as a troubleshooting technique. o (B) Methodical substitution of components starting at one end of the board and working towards

the opposite end. o (C) Random substitution of components in no particular pattern. • (D) Visual inspection of components or the use of live signal tracing with test instruments.



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 17. When the operating handle of a molded-case circuit breaker is in the mid-position, what does this

indicate?

o (A) the circuit breaker is switched off o (B) the circuit breaker is switched on o (C) the circuit breaker has been reset • (D) the circuit breaker has tripped


18. As shown in figure "A" and "B" of the illustration, the potable water pump is short-cycling by the action of the pressure switch as a result of an unusually high level in the potable water hydro-pneumatic header tank. What is most likely the cause? Illustration EL-0043

o (A) The potable water hydro-pneumatic header tank has too much compressed air and some must be bled off.

o (B) The pressure switch differential setting is set excessively high and the differential must be decreased.

• (C) The potable water hydro-pneumatic header tank is in need of recharging with compressed air due to absorption of air into the water over time.

o (D) The pressure switch range adjustment is set too low and must be set higher.


19. An AC diesel-electric drive ship with synchronous propulsion motors has the capability for power factor correction. If the power factor associated with the main power distribution including all motors is 0.7 lagging, what statement is true?

• (A) The synchronous propulsion motors are under-excited. o (B) The excitation status of the synchronous motor cannot be determined. o (C) The synchronous propulsion motors are over-excited. o (D) The synchronous propulsion motors are normally excited.


20. When completing repairs on a high voltage circuit where portable grounding straps were used for increased operator safety and confidence, what is the proper procedure for disconnecting these grounding straps?

o (A) The common to hull ground connection and the phase connections to common can all be disconnected in any sequence.

• (B) Disconnect the phase connections to common first, then disconnect the common connection to hull ground.

o (C) The common to hull ground and the phase connections to common should all be disconnected simultaneously.

o (D) Disconnect the common connection to hull ground first, then disconnect the phase connections to common.



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 21. When troubleshooting a printed circuit board, one technique that can be used is swapping the

suspected damaged board with a new board. When installing the new board which was stored in a specially manufactured antistatic bag, how may damage due to electrostatic discharge be prevented?

• (A) Before touching the board, you should discharge any static buildup on yourself by touching a conductive surface or use a grounding wrist strap, and the board should be handled by its insulated edges only.

o (B) Before touching the board, you should discharge any static buildup on yourself by touching a conductive surface or use a grounding wrist strap, and the board should be handled by grasping trace solder surfaces.

o (C) Before touching the board, you should discharge any static buildup on the board by touching the board to a conductive surface, and the board should be handled by grasping trace solder surfaces.

o (D) Before touching the board, you should discharge any static buildup on the board by touching the board to a conductive surface, and the board should be handled by its insulated edges only.


22. What is the most common and reliable type of circuit breaker used for high voltage practice aboard ship?

• (A) vacuum-break o (B) gas-break o (C) oil-break o (D) air-break


23. What statement is TRUE concerning the speed of a synchronous AC propulsion motor?

• (A) The speed is directly proportional to the frequency applied to its stator windings. o (B) The speed is directly proportional to the frequency applied to its rotor windings o (C) The speed is inversely proportional to the frequency applied to its stator windings. o (D) The speed is inversely proportional to the frequency applied to its rotor windings.


24. In testing a hand cranked megger prior to use, what statement is true?

o (A) With the test leads shorted or open, the pointer should go to infinite ohms. o (B) With the test leads shorted or open, the pointer should go to zero ohms. • (C) With the test leads shorted, the pointer should go to zero ohms, and with the tests leads

open, the pointer should go to infinite ohms. o (D) With the test leads shorted, the pointer should go to infinite ohms, and with the tests leads

open, the pointer should go to zero ohms.



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 25. Which of the following statements is true concerning the operation of modern marine electric drive

DC propulsion motors?

o (A) The source and load converters respond to a small reference voltage increasing the frequency applied to the motor until it reaches the desired speed.

o (B) The cycloconverter is used to increase the voltage applied to the motor until it reaches the desired speed.

o (C) The rotor follows the frequency and phase sequence rotation of voltage applied to the motor until it reaches the desired speed.

• (D) The silicon controlled rectifiers in the power converter are used to control the voltage and current applied to the motor armature.


26. As shown in the illustration of a DC diesel-electric propulsion drive system, what would be the set up contactor configurations if #1 M/E is to be secured, so that only #2 M/E diesel-generator is set up to supply both propulsion motors? Illustration EL-0141

• (A) contactors G2 and S1 pulled in; contactors G1 and S2 dropped out o (B) contactors G2 and S1 dropped out; contactors G1 and S2 pulled in o (C) contactors G2 and S2 dropped out; contactors G1 and S1 pulled in o (D) contactors G2 and S2 pulled in; contactors G1 and S1 dropped out


27. In addition to high voltage circuit grounding with ground-connecting switching devices, for additional operator safety and confidence, portable grounding straps may be used. What is the proper procedure for connecting these portable grounding straps?

o (A) The common to hull ground connection and the phase connections to common should all be made simultaneously.

o (B) The common to hull ground connection and the phase connections to common can be made in any sequence.

• (C) Connect the common connection to hull ground first, then connect the phase connections to common.

o (D) Connect the phase connections to common first, then connect the common connection to hull ground.


28. Propulsion AC generators creating 4160 VAC use transformers to provide nominally 120 VAC to the automatic voltage regulator. What is the turns ratio of this step-down transformer?

o (A) 1:4 o (B) 4:1 • (C) 35:1 o (D) 40:1



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 29. How is the direction of propeller shaft rotation changed when directly coupled to an AC synchronous

motor when driven by a variable frequency alternator in an AC turbo-electric drive system?

o (A) Reversing the polarity of the propulsion motor • (B) Reversing the phase sequence of power to the motor o (C) Reversing the polarity of the propulsion generator o (D) Reversing the rotation of the steam turbine


30. In figure "A" of the illustrated circuit, the amplifier is connected in what basic configuration? Illustration EL-0045

o (A) Darlington paired, capacitor coupled • (B) common emitter o (C) common collector o (D) common base


31. Which of the listed classes of electrical insulation is suited for the highest operating temperature?

o (A) Class 90 (O) o (B) Class 105 (A) o (C) Class 130 (B) • (D) Class 180 (H)


32. Which of the following statements is true concerning the cleaning of electrical contacts?

o (A) Magnetic brushes should be used to remove metallic dust. o (B) The contact surfaces should be greased to increase contact resistance. o (C) Compressed air should be used to blow out metallic dust. • (D) Delicate parts should be cleaned with a brush and an approved safety solvent.


33. The conversion of the throttle command voltage to the signal necessary to achieve the desired shaft RPM is accomplished by what circuit?

o (A) feedback resistor of the summing amplifier circuit • (B) ahead or astern function generator of the throttle control circuit o (C) operational amplifiers in the autorotation circuit o (D) long time constant amplifier circuit



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 34. On DC diesel-electric drives, how is the speed of the DC propulsion motor primarily controlled?

o (A) changing the generator field excitation current o (B) changing the motor field excitation current o (C) changing the polarity of the generator field • (D) changing the generator engine speed


35. For troubleshooting purposes, the key indicator to the safety and general condition of high voltage circuitry is insulation resistance. For a 6.6 kV high voltage system, what would be the recommended minimum insulation resistance value?

o (A) 1 megohm o (B) 5.6 megohms o (C) 6.6 megohms • (D) 7.6 megohms


36. Due to the operating characteristics of the system, time lag fuses (or dual-element fuses) are necessary for use in what types of circuits?

o (A) main lighting circuits o (B) general alarm circuits • (C) motor starting circuits o (D) emergency lighting circuits


37. On a digital numerical display readout, what would be the minimum number of LED segments required to form and display any digit 0 through 9?

o (A) 6 • (B) 7 o (C) 8 o (D) 9


38. What item (or items) constitute routine AC motor controller maintenance?

o (A) cleaning with carbon tetrachloride • (B) performing a visual inspection and tightening connections o (C) blowing out with high-pressure compressed air o (D) cleaning with soap and water



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 39. What is the name of the digital logic gate represented by figure "1" of the illustration? Illustration EL-

0035

o (A) Exclusive OR gate • (B) OR gate o (C) NOR gate o (D) AND gate


40. As shown in the illustrated adaptive digital steering control system functional block diagram and listed system interface signals table, what would the rudder order signal output voltage to the rudder servo amplifier be for a rudder order of 15 degrees right rudder? Assume that left rudder order signals are negative in polarity and that right rudder order signals are positive in polarity. Illustration EL-0191

o (A) -1.33 VDC o (B) -3.75 VDC • (C) +3.75 VDC o (D) +5.0 VDC


41. As shown in the illustrated adaptive digital steering control system functional block diagram and listed system interface signals table, what would the rudder order signal output voltage to the rudder servo amplifier be for a rudder order of 20 degrees left rudder? Assume that left rudder order signals are negative in polarity and that right rudder order signals are positive in polarity. Illustration EL-0191

o (A) - 2.25 VDC o (B) - 4.0 VDC • (C) - 5.0 VDC o (D) + 5.0 VDC


42. What is the third color band on a resistor used to indicate?

o (A) tolerance of the resistor o (B) second significant figure of the resistance o (C) first significant figure of the resistance • (D) number of zeros following the first two significant figures in the resistance value



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 43. With an AC synchronous electric propulsion motor driving a fixed-pitch propeller, whenever there is a

direction reversal ordered from the bridge, there is a process of regenerative braking that is used to slow the motor down before the shaft actually reverses. Where is the energy associated with the inertia of rotation dissipated before reversal occurs?

o (A) The energy is dissipated at a dynamic braking resistor bank used for this purpose only. o (B) The energy is dissipated at the AC synchronous electric propulsion motor itself. • (C) The energy is dissipated by transferring the energy back to the electrical source. o (D) The energy is dissipated at the load converter GTO controlled thyristors.


44. Why is copper often used as an electrical conductor?

o (A) has high resistance at low temperatures o (B) has a highly polished surface • (C) is able to pass current with little opposition o (D) holds insulation together well


45. Modern ships use multiple computers arranged in a client/server network to perform various shipboard functions. What type of computer network would most likely be used aboard ship?

• (A) Wired local area network o (B) Wireless local area network o (C) Wireless wide area network o (D) Wired wide area network


46. Which of the following is a disadvantage of electric drive propulsion systems?

o (A) Main propulsion power may also be directed to ships electrical service distribution. o (B) The propeller speed and direction of rotation are easily controllable. • (C) Propulsion motors are required along with electrical power generation machinery. o (D) Location of electric power generation machinery is flexible.



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 47. Referring to the illustration of a twin-screw diesel-electric AC propulsion drive system, if either the

port propulsion excitation transformer or the port propulsion field controller was inoperable, what statement is true? Illustration EL-0164

o (A) The standby excitation transformer and standby field controller could be used to control the field of the port propulsion motor, and this would be the only means of backup.

o (B) The port propulsion drive motor would be inoperable, as no means of field control is provided as a backup.

o (C) The starboard excitation transformer and starboard field controller could be used to control the field of the port propulsion motor, and this would be the only means of backup.

• (D) Either the standby excitation transformer and standby field controller or the starboard excitation transformer and starboard field controller could be used to control the field of the port propulsion motor.


48. Under what circumstance would a hand-held portable phase sequence indicator be used should the main switchboard mounted fixed phase sequence indicator be inoperative?

o (A) installing a new synchroscope • (B) preparing to make the shore power connection o (C) replacing a defective solenoid o (D) paralleling alternators


49. Power conversion for use in DC propulsion drive motors is accomplished by what type of converter?

o (A) pulse width modulated converters • (B) silicon controlled rectifier converters o (C) load commutated converters o (D) cycloconverters


50. In order to check the performance of a transistor removed from its circuit, what meter or tester should be used?

o (A) impedance meter o (B) sensitive potentiometer o (C) voltmeter or transistor tester • (D) ohmmeter or transistor tester



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 51. What is the greatest single cause of electrical failures?

o (A) high inductance o (B) too frequent testing • (C) the breakdown of insulation o (D) overcurrent


52. What type of local area network physical topology features point-to-point interconnection between all communicating devices and is the least vulnerable to a break in communication?

• (A) Mesh o (B) Star o (C) Bus o (D) Ring


53. If a digital multimeter is set up as shown in figure "A" of the illustration, what would be displayed on the screen if the fuse being tested is blown? Illustration EL-0210

o (A) OL volts o (B) 0.001 ohms o (C) 470 ohms • (D) OL ohms


54. As shown in the illustration, which electrical symbol represents a PNP type bipolar junction transistor? Illustration EL-0065

• (A) 1 o (B) 2 o (C) 3 o (D) 4


55. The clamp-on AC ammeter consists essentially of a split-core and a rectifier-type instrument connected to the secondary winding of a particular type of transformer. Which type is used?

o (A) reactance transformer o (B) potential transformer • (C) current transformer o (D) control transformer



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 56. As shown in the illustration, by what means are all the "MS" contacts opened and closed?

Illustration EL-0073

• (A) manual operation of the master switches o (B) solenoid switches o (C) magnets o (D) operating coils


57. What type of circuit is represented by the diagram shown in the illustration? Illustration EL-0058

o (A) dual speed, 2-winding motor controller circuit o (B) common fluorescent lighting circuit o (C) uninterruptible power supply circuit • (D) navigation running light circuit


58. The ground indicating light on the main electrical switchboard is indicating a ground. What is the best procedure for locating the grounded circuit?

o (A) check circuit resistances with a megohmmeter connected between the grounded line and the distribution panel framework

o (B) check all circuits for continuity o (C) trace the circuit paths while looking for burned spots • (D) open the circuit breakers on the distribution panel, one at a time, until the lights no longer

indicate a ground


59. What is the name of the device shown in figure "1" of the illustration? Illustration EL-0068

• (A) rectifier diode o (B) light-emitting diode o (C) rectifier bridge o (D) silicon-controlled rectifier


60. 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?

o (A) Tripped main motor interlocks o (B) Closed contact in the field circuits o (C) Overheated crosstie busses • (D) Excessive vibration of the vessel



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 61. What would be considered the first line of defense in trying to prevent the build-up of dust on printed

circuit boards associated with computer network devices?

o (A) Removal of access panels, followed by vacuuming out the equipment with a vacuum cleaner. • (B) Periodically cleaning or replacing any equipment enclosure air filters. o (C) Removal of access panels, followed by blowing out the equipment with compressed air. o (D) Periodically flushing out the equipment enclosure with an approved solvent.


62. To conduct an in-circuit test of a transistor, what meter or tester should be used?

o (A) wattmeter • (B) voltmeter or transistor tester o (C) impedance meter o (D) ohmmeter or transistor tester


63. As shown in figure "A" of the illustration, what is the configuration of the operational amplifier? Illustration EL-0252

o (A) differential amplifier o (B) non-inverting amplifier o (C) summing amplifier • (D) inverting amplifier


64. How is the main propeller shaft rotation of a rectified DC diesel-electric drive normally reversed?

• (A) reversing the field polarity in the DC motor o (B) reversing the interpoles o (C) reversing the diesel engine rotation o (D) reversing the field polarity in the AC generator


65. In the illustration what is the component labeled "C"? Illustration EL-0033

o (A) trip bar o (B) connection terminal o (C) moving contact • (D) fixed contact



8/30/2017

U.S.C.G. Merchant Marine Exam Chief Engineer-Limited Q604 Electrical-Electronic-Control Engineering Illustrations: 20 66. What will be the resulting total current if a voltage of 125 VDC is applied to the loads of the circuit in

figure "A" of the illustration where the resistance of R1 is 12 ohms, and R2 is 115 ohms? Illustration EL-0019

• (A) 11.5 amps o (B) 12.5 amps o (C) 115 amps o (D) 125 amps


67. When troubleshooting motor controllers, what is a shorted relay or contactor coil often indicated by?

o (A) a higher than normal voltage reading across the winding o (B) a resistance reading of 'infinity' on an ohmmeter • (C) charred insulation and/or a blown control fuse o (D) a reading of 'zero' on a megger from one of the coil's leads to ground


68. In addition to improper brush pressure or seating, what can result in excessive sparking at the brushes of a DC propulsion motor?

o (A) operating at continuously varying loads such as during maneuvering • (B) improper positioning of brush rigging outside the neutral plane o (C) reversed main field polarity with respect to the armature o (D) reversed armature polarity with respect to the field


69. As shown in the illustrated adaptive digital steering control system functional block diagram and listed system interface signals table, what would the rudder order signal output voltage to the rudder servo amplifier be for a rudder order of 15 degrees right rudder, assuming left rudder signals are negative and right order signals are positive in polarity? Illustration EL-0191

o (A) -1.33 VDC o (B) -3.75 VDC • (C) +3.75 VDC o (D) +5.0 VDC


70. What type of electric propulsion system converter is shown in the illustration? Illustration EL-0155

o (A) pulse width modulation converter o (B) cycloconverter • (C) synchroconverter o (D) controlled rectifier converter



8/30/2017


6/1/2016

EL-0019

Adapted for testing purposes only Further reproduction prohibited without permission.



6/1/2016

EL-0033




6/1/2016

EL-0035




3/9/2015

Adapted for testing purposes only from HARRINGTON. Marine Engineering. © 1992 SNAME. Reproduced with permission from The Society of Naval Architects and Marine Engineers.

Further reproduction prohibited without permission.

EL-0043



3/9/2015

Adapted for testing purposes only from Introduction to Amplifiers, Navy Electricity and Electronics Training Series, Module 8. Naval Education and Training Command.

NAVEDTRA 172-08-00-82


EL-0045



3/30/2015

Adapted for testing purposes only from SMITH. Modern Marine Electricity and Electronics. © 1966 Cornell Maritime Press. Reproduced with permission from Cornell Maritime Press, a

division of Schiffer Publishing, Ltd.


EL-0058



6/2/2016

EL-0065




6/2/2016

EL-0068




3/30/2015

Adapted for testing purposes only from SMITH. Modern Marine Electricity and Electronics. © 1966 Cornell Maritime Press. Reproduced with permission from Cornell Maritime Press,

a division of Schiffer Publishing, Ltd.


EL-0073



4/6/2015

Adapted for testing purposes only from HUBERT, Operating, Testing and Preventive Maintenance of Electrical Power Apparatus. © 2003 Pearson Education. Reproduced with permission from

Pearson Education, Inc. Further reproduction prohibited without permission.

EL-0083



4/27/2015

Adapted for testing purposes only from HUNT, Modern Marine Engineer’s Manual, Vol. II. © 2002 Cornell Maritime Press. Reproduced with permission from Cornell Maritime Press, a

division of Schiffer Publishing, Ltd.


EL-0141



4/27/2015

Adapted for testing purposes only from HALL, Practical Marine Electrical Knowledge, 2E. © 2003 Dennis T. Hall. Reproduced with permission from Witherby Publishing Group, LTD.


EL-0154



4/27/2015



EL-0155



5/4/2015



EL-0164



5/11/2015

Adapted for testing purposes only from TETLEY/CALCUTT, Electronic Navigation Systems, 3E. © 2001 Tetley & Calcutt. Reproduced with permission from Northrop Grumman Sperry Marine.


EL-0191



5/11/2015

Adapted for testing purposes only from TETLEY/CALCUTT, Electronic Navigation Systems, 3E. © 2001 Tetley & Calcutt. Reproduced with permission from Northrop Grumman Sperry Marine


EL-0195



6/2/2016

EL-0210

Adapted for testing purposes only

Further reproduction prohibited without permission. of 37 Q604 Electrical-Electronic-Control Engineering


6/2/2015

Adapted for testing purposes only from HUBERT, Operating, Testing and Preventive Maintenance of Electrical Power Apparatus

Copyright © 2003 Pearson Education.

Reproduced with permission from Pearson Education, Inc. Further reproduction prohibited without permission.

EL-0256


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