National Maritime Center

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1 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited (Sample Examination) 9/10/2018 Page 1 of 40

2 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: 23 Choose the best answer to the following Multiple Choice Questions. 1. For the purpose of calculating line current, which of the following procedures should be used to determine the total line current of a three-phase, delta wound, AC generator? (A) Multiply the amperage in one phase by the square root of three. o (B) Multiply the amperage in one phase by three. o (C) Divide the total amperage in all phases by the square root of three. o (D) Divide the total amperage in all phases by three. 2. Referring to figure "B" of the illustration, what statement is true? Illustration EL-0020 o (A) The current drawn by an individual resistor will be proportional to the resistance of that resistor. (B) The current drawn by the circuit will be inversely proportional to the total resistance of the entire circuit. o (C) If the resistance values of the individual resistors are uniquely different, each resistor will have a uniquely different current draw. o (D) The current drawn by the circuit will be directly proportional to the total resistance of the entire circuit. 3. What statement is true concerning the total resistance of a parallel circuit? o (A) The total resistance is equal to the sum of the individual branch resistances. (B) The total resistance is less than that of the branch with the lowest resistance. o (C) The total resistance is equal to the sum of the individual branch resistances divided by the number of branches. o (D) The total resistance is larger than that of the branch with the greatest resistance. 4. If a circuit has resistances of 5, 10, and 20 ohms connected in parallel, what is the combined total resistance of the circuit? o (A) 1.5 ohms (B) 2.9 ohms o (C) 17.5 ohms o (D) 35.0 ohms 9/10/2018 Page 2 of 40

3 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: A resistance is added in series and internally with the analog meter movement of which of the following instruments? (A) DC voltmeter o (B) DC ammeter o (C) AC frequency meter o (D) AC ammeter 6. In figure "2" of the diagram shown in the illustration, the three-phase step-down power transformer has a turns ratio of four to one. If a three-phase 480 volt supply is connected to terminals "A1-B1- C1", what voltage should develop across terminals "A2-B2-C2"? Illustration EL-0084 o (A) 69 volts (B) 120 volts o (C) 208 volts o (D) 277 volts 7. What statement is true concerning the electrical diagrams for the motor controller shown in the illustration? Illustration EL-0007 o (A) Figure "A" is a ladder or line diagram (schematic) and figure "B" is a wiring diagram. o (B) Figure "A" is a one-line diagram and figure "B" is a ladder or line diagram (schematic). (C) Figure "A" is a wiring diagram and figure "B" is a ladder or line diagram (schematic). o (D) Figure "A" is a pictorial drawing and figure "B" is a wiring diagram. If choice C is selected set score to To properly use a clamp-on-type ammeter for measuring current accurately, what must be done? (A) Enclose one conductor within the jaws AND make sure the jaws are closed. o (B) Enclose multiple conductors within the jaws AND make sure the jaws are closed. o (C) Enclose multiple conductors within the jaws AND make sure the jaws are open. o (D) Enclose one conductor within the jaws AND make sure the jaws are open. 9/10/2018 Page 3 of 40

4 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Many digital multimeters now have a capacitance measurement mode. In the absence of this mode, it is possible to test capacitors in the resistance mode. Using the resistance mode, what would be the indication on the display when testing an initially discharged capacitor in good condition? o (A) The display would immediately show "0 ohms or very low resistance" and remain at this value. o (B) The display would immediately show "OL or in excess of 200 megohms" and remain at this value. o (C) The display would immediately show "0 ohms or very low resistance but rapidly climb to a slightly higher value and remain there. (D) The display would immediately show "0 ohms or very low resistance" but gradually climb to "OL or in excess of 200 megohms". If choice D is selected set score to What is the nominal output voltage of a 6 cell lead-acid battery? o (A) 6 volts o (B) 7.5 volts (C) 12 volts o (D) 18 volts If choice C is selected set score to Which type of AC single phase motor will also operate on direct current? o (A) Repulsion-start o (B) Shaded-pole (C) Series-wound o (D) Split phase If choice C is selected set score to What is the characteristic of a wound-rotor induction motor, with a high resistance inserted in series with the rotor winding at startup? o (A) relatively high starting torque and high stator current o (B) relatively low starting torque and high stator current (C) relatively high starting torque and low stator current o (D) relatively low starting torque and low stator current If choice C is selected set score to 1. 9/10/2018 Page 4 of 40

5 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Which of the following is the only known perfect dielectric for the purpose of serving as electrical insulation? (A) vacuum o (B) ceramic o (C) glass o (D) mica 14. In preparing a battery-operated digital megohmmeter (resistance tester) for use, what statement is true? (A) The circuit or circuit component under test must be de-energized, AND the megohmmeter test voltage must be set to a value equal to or greater than the equipment exposure voltage. o (B) The circuit or circuit component under test must be energized, AND the megohmmeter test voltage must be set to a value equal to or greater than the equipment exposure voltage. o (C) The circuit or circuit component under test must be de-energized, AND the megohmmeter test voltage must be set to a value less than the equipment exposure voltage. o (D) The circuit or circuit component under test must be energized, AND the megohmmeter test voltage must be set to a value less than the equipment exposure voltage. 15. The leads from an ohmmeter are attached to the leads of the opposite ends of an AC induction motor stator coil. If a reading of infinity (OL) is obtained, what does this indicate? o (A) shorted stator coil (B) open stator coil o (C) grounded stator coil o (D) shunted stator coil 16. Which of the following voltage testers would be associated with high quality, be safe to use, and minimize the electric shock hazard? o (A) a voltage tester with a high input impedance and a lower voltage rating than any expected measured voltages (B) a voltage tester with a high input impedance and a voltage rating higher than any expected measured voltages o (C) a voltage tester with a low input impedance and a higher voltage rating than any expected measured voltages o (D) a voltage tester with a low input impedance and a lower voltage rating than any expected measured voltages 9/10/2018 Page 5 of 40

6 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Which of the following devices would be forbidden to use as a primary means of electrical isolation? o (A) non-fused disconnect switch (B) start/stop push button station o (C) fused disconnect switch o (D) circuit breaker 18. Under unusual circumstances, it may be required to operate a ship's service generator above its rated kva. What supplemental casualty control action will be required? o (A) Increase the cooling water flow, while maintaining air temperatures below the dew point for increased cooling effect. o (B) While maintaining the rated system voltage, lower the operating frequency to at least 5% below the rated system frequency. o (C) While maintaining the rated system frequency, lower the operating voltage to at least 5% below the rated system voltage. (D) Increase the cooling water flow, while maintaining air temperatures above the dew point to avoid any condensation. If choice D is selected set score to If the motor shown in the illustration will not start when the "off-run" switch is placed in the run position, which of the listed components should be checked FIRST? Illustration EL-0017 (A) check the overload relay for tripped condition, reset as necessary o (B) check the main contactor coil for continuity, replace as necessary o (C) check the disconnect switch open, open as necessary o (D) check the overload relay (OL) heaters for continuity, replace as necessary 20. What condition associated with a lead-acid battery cell can cause the plates to partially short-out and cause the cell to fail to hold a charge? o (A) lime accumulation on both the positive and negative terminal posts (B) accumulation of sediment within the cells due to excessive overcharging and discharging o (C) sulfation of the plates due to consistent undercharging or leaving the battery in a discharged state o (D) dirty or acid-wet tops and sides of batteries 9/10/2018 Page 6 of 40

7 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: If the cooling water system is isolated for repairs, but in an operational emergency, it is still desirable to run the alternator pictured in figure "A" of the illustration, what must be done? Illustration EL-0037 o o o (A) The alternator may not be run without cooling water under any circumstances. (B) The emergency air inlet panel and air outlet doors must remain closed, which requires the alternator to be run only at reduced loads. (C) The emergency air inlet panel and air outlet doors must be opened, but in doing so allows the alternator to be run at rated load. (D) The emergency air inlet panel and air outlet doors must be opened and only then can the alternator be run, but at reduced load. If choice D is selected set score to As shown in the illustration, the wet cell storage batteries are connected in what configuration? Illustration EL-0071 o (A) compound (B) series o (C) parallel o (D) tandem 23. The nominal voltage of one cell of a wet cell nickel-cadmium battery is approximately how many volts? (A) 1.2 volts o (B) 1.5 volts o (C) 2.0 volts o (D) 3.0 volts 24. What is the most practical method of controlling the RPM of a multi-speed AC motor operating at a constant frequency? o (A) change the input voltage o (B) change the power factor (C) change the number of operating poles o (D) change the number of brushes If choice C is selected set score to 1. 9/10/2018 Page 7 of 40

8 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Which of the listed motors will operate at the highest RPM, assuming that each operates at the same frequency? (A) A four-pole synchronous motor under normal load. o (B) A four-pole induction motor under no load. o (C) A six-pole synchronous motor under normal load. o (D) A six-pole induction motor under full load. 26. By what means is a synchronous motor started and brought nearly to synchronous speed? o (A) By the use of starting capacitors, also known as condensers. o (B) By the use of interpoles, also known as commutating poles. o (C) By the use of compensating windings, also known as starting windings. (D) By the use of a squirrel-cage induction winding, also called an amortisseur winding. If choice D is selected set score to Which of the following illustrated manual motor starters represents the wiring diagram illustrated in figure "A"? Illustration EL-0023 (A) 1 o (B) 2 o (C) 3 o (D) As shown in the illustration, what type of motor and motor starter are featured? Illustration EL-0136 o (A) wound rotor induction motor with across-the-line starting o (B) squirrel-cage induction motor with reduced voltage starting o (C) synchronous motor with across-the-line starting (D) squirrel-cage induction motor with across-the-line starting If choice D is selected set score to Of the listed factors that influence the magnitude of the voltage induced in the stator windings of an AC generator operating at a constant 60 Hz frequency, some are fixed due to the alternator design and one is variable due to alternator operating conditions. Which of the following listed factors is subject to be variable during generator operation? (A) strength of the rotating magnetic field o (B) rotational speed at which the magnetic field passes across the stator winding o (C) number of armature coil turns in series per winding o (D) number of field coil turns in series per winding 9/10/2018 Page 8 of 40

9 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: How are fuses usually rated? o (A) watts only o (B) amps only o (C) volts and amps only (D) volts, amps, and interrupting capacity If choice D is selected set score to What is the basic similarity between a circuit breaker and a fuse? o (A) after a short or overload condition, both have to be replaced before the circuit can be reenergized (B) after a short or overload condition, both should open to de-energize the circuit o (C) after a short or overload condition, both must be reset to re-energize the circuit o (D) a circuit breaker and a fuse have no similarities 32. If the illustrated device in figure "B" has a step-up ratio of 10 to 1 what voltage would be measured at the secondary shortly after the primary of the device is connected to 110 volts DC and the primary current stabilized with a current of 12 amps? Illustration EL-0055 (A) 0 volts o (B) 110 volts o (C) 1000 volts o (D) 1100 volts 33. The timer element of a reverse power relay cannot be energized unless what condition is met? o (A) one generator is fully motorized (B) the power flow is the same as the tripping direction o (C) the movement of the disk is damped by a permanent magnet o (D) the power flow is the opposite to the tripping direction 34. The multiplier prefix "giga" (G) such as used in "gigabytes" represents what multiplication factor? o (A) thousand (10 to the 3rd power) o (B) million (10 to the 6th power) (C) billion (10 to the 9th power) o (D) trillion (10 to the 12th power) If choice C is selected set score to 1. 9/10/2018 Page 9 of 40

10 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Which of the wave shapes shown in the illustration is termed a sinusoidal wave? Illustration EL-0088 (A) A o (B) B o (C) C o (D) D 36. A silicon controlled rectifier (SCR) is a solid state device used for what functional purpose? o (A) amplifying voltage, current, and/or power (B) triggering the operation of a switching function o (C) automatic impedance matching function o (D) attenuating of voltage, current, and/or power 37. What is the functional purpose of the zener diode "CR1" as shown in section "D" of the regulated DC power supply? Illustration EL-0085 o (A) is a temperature compensator (B) aids in output voltage regulation o (C) corrects power factor o (D) prevents excessive currents 38. In referring to the graphs shown in the illustration, which of the following figures represents a bandpass filter? Illustration EL-0076 o (A) A o (B) B (C) C o (D) D If choice C is selected set score to In referring to the frequency response filters shown in the illustration, what determines the band pass or band stop frequencies as appropriate? Illustration EL-0078 o (A) The magnitude of the incoming voltage o (B) The value of the RC time constant (C) The value of the resonant frequencies associated with L and C o (D) The value of the total load resistance If choice C is selected set score to 1. 9/10/2018 Page 10 of 40

11 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: Referring to figure "2" of the illustration, if the inputs at A and B are both "0", what will be the outputs at "C", "D", "E", and "F" respectively? Illustration EL-0089 o (A) C = 1 D = 1 E = 1 F = 1 o (B) C = 0 D = 1 E = 0 F = 1 o (C) C = 1 D = 0 E = 0 F = 1 (D) C = 1 D = 1 E = 0 F = 1 If choice D is selected set score to As shown in figure "C" of the illustration, what type of timer is represented? Illustration EL-0242 (A) on-delay timer o (B) off-delay timer o (C) on-off delay timer o (D) pulse timer 42. Ships requiring extremely rapid maneuvering response using propeller shaft speed and direction as the sole means of controlling propeller thrust are most likely to use what type of drive system? o (A) Steam turbine geared drive (B) Diesel-electric drive o (C) Gas turbine geared drive o (D) Direct or geared diesel drive 43. Which statement is TRUE concerning electric propulsion drives? (A) The propeller speed and direction of rotation are easily controllable. o (B) Lower transmission losses compared to other types of propulsion drives. o (C) Lack of flexibility of arrangement between the prime mover and motor. o (D) Inability to be utilized as a source of ships service power. 44. As shown in figure "A" of the illustration, the load-commutated inverter drive illustrated has how many pulses? Illustration EL-0159 o (A) 3 (B) 6 o (C) 9 o (D) 12 9/10/2018 Page 11 of 40

12 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: While standing an "at sea watch" onboard an AC diesel-electric drive ship with a synchronous propulsion motor with the ability to vary the field excitation strength and still remain in synchronism. Ideally what would be the character of the power factor associated with the main power distribution system including all motors? o (A) lagging (B) unity o (C) leading o (D) zero 46. What statement is TRUE concerning podded azimuthing propulsors? o (A) It is an electric drive system in which the motor drives a controllable-pitch propeller (CPP). o (B) It is an electric drive system using water jets. o (C) It is an electric drive system that incorporates a DC motor. (D) It is an electric drive system where the propulsion motor is installed in a submerged housing capable of swiveling. If choice D is selected set score to For the purposes of high voltage marine practice, what is the threshold voltage where all voltages below this value are considered low voltage? (A) 1.0 kv o (B) 3.3 kv o (C) 6.6 kv o (D) 11 kv 48. Some shipboard high voltage systems have the neutral point of the generators bonded to the ship's hull with a neutral grounding resistor. What is the purpose of this resistor? o (A) To completely eliminate ground fault current o (B) To maximize the magnitude of the ground fault current o (C) To prevent nuisance ground fault trips (D) To minimize the magnitude of the ground fault current If choice D is selected set score to 1. 9/10/2018 Page 12 of 40

13 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: To facilitate communication between the wheelhouse and the steering gear room in a steering emergency where no external source of power is required, what means of two-way communication would be provided? o (A) Emergency loudspeaker system o (B) Ship-service telephone system (C) Sound-powered telephone system o (D) Two-way portable radios If choice C is selected set score to In a typical fire detection control unit, what would be indicated by an illuminated yellow light? o (A) fire or smoke detected (B) trouble in the system o (C) backup power is on o (D) normal power is on 51. Which of the following data communication cable types offers the greatest immunity to electromagnetic "noise"? o (A) Shielded twisted pair o (B) Unshielded twisted pair o (C) Coaxial (coax) (D) Fiber-optic If choice D is selected set score to As shown in the illustrated block diagram for a distributed automation system, what statement is true concerning the workstations labeled "LOS" associated with the port power management system? Illustration EL-0096 o (A) These are local operating system workstations that allow local control of processes related to the operation and control of all functions within the engineering plant. (B) These are local operating system workstations that allow local control of processes related to the operation and control of the port generator. o (C) These are lube oil system workstations that allow local control of processes related to the lubrication of the port generators. o (D) These are lube oil system workstations that allow local control of processes related to the lubrication of all machinery within the engineering plant. 9/10/2018 Page 13 of 40

14 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: What should be included in the routine periodic maintenance checks for electrical motors? (A) checking for vibration o (B) checking for watertight integrity o (C) checking for reactive power o (D) checking for speed droop 54. When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided? Illustration EL-0218 o (A) Flushing out the old grease while running the motor with no load. o (B) Only partially filling the bearing cavity with new grease. o (C) Flushing out the old grease with an approved solvent. (D) Completely filling the bearing cavity with new grease. If choice D is selected set score to Referring to the illustration pertaining to the semi-automatic navigation light panel circuit, assuming that the transfer switch is in the primary lamp position, in addition to the buzzer sounding, what will be the response of the indicator lamps when the primary lamp of the particular navigation light burns out? Illustration EL-0108 o (A) The indicator lamp in the master section will go OUT The indicator lamp in the effected line section will come ON (B) The indicator lamp in the master section will remain ON The indicator lamp in the effected line section will come ON o (C) The indicator lamp in the master section will remain ON The indicator lamp in the effected line section will go OUT o (D) The indicator lamp in the master section will go OUT The indicator lamp in the effected line section will go OUT 56. In an impressed current cathodic hull protection system, what statement is true concerning the composition and arrangement of the anodes? o (A) The protective anodes are made of zinc and are electrically insulated from the hull. (B) The protective anodes are made of lead or platinized titanium and are electrically insulated from the hull. o (C) The protective anodes are made of zinc and are electrically bonded to the hull. o (D) The protective anodes are made of lead or platinized titanium and are electrically bonded to the hull. 9/10/2018 Page 14 of 40

15 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: The electrical energy necessary to power a sound-powered telephone's small vibrating bell is obtained from what power source? (A) each station's hand-cranked generator o (B) the emergency switchboard o (C) normal 115-volt DC supplies o (D) the emergency batteries for the general alarm 58. In the event of a power failure during cargo loading operations, the movement of an electric powered cargo winch will be stopped by what means? o (A) a manual override switch (B) a spring set brake o (C) a hand-operated band brake o (D) the weight of the load on the boom 59. As shown in the illustration, what is responsible for maintaining the "UV" relay energized when the master switch handle is moved away from the "off" position? Illustration EL-0102 (A) normally open "UV" sealing contact o (B) normally closed "OL" contact o (C) "MS 2" contact o (D) "MS 1" contact 60. Which of the electronic schematic symbols represents the capacitor illustrated in figure "1" of the illustration? Illustration EL-0015 o (A) A (B) B o (C) C o (D) D 61. In figure "1" of the illustration, what type of circuit breaker trip element is featured? Illustration EL o (A) ambient compensated trip (B) thermal trip o (C) magnetic trip o (D) shunt trip 9/10/2018 Page 15 of 40

16 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: What should you be aware of when checking the specific gravity of the battery electrolyte with a hydrometer? o (A) the battery is discharged when the float is highest in the electrolyte o (B) a hydrometer reading is accurate if taken immediately after water is added to the cell (C) depending on the temperature it may be necessary to correct for temperature o (D) the battery is fully charged when the float sinks deepest into the electrolyte If choice C is selected set score to Which of the listed battery charging circuits is used to maintain a wet cell, lead-acid, storage battery in a fully charged state during long periods of disuse? o (A) High ampere charging circuit o (B) Normal charging circuit o (C) Quick charging circuit (D) Trickle charging circuit If choice D is selected set score to In performing routine maintenance of a ship's service alternator, what should be included? o (A) lubricating exciter slip rings o (B) megger testing of all rectifying diodes (C) periodic cleaning of the air filters or screens o (D) changing the pedestal bearing insulation yearly If choice C is selected set score to When an alternator is to remain idle for even a few days, what should be ensured or manually accomplished? (A) ensure energization the space heater circuit (usually automatic) o (B) insulate the collector rings with strips of cardboard if applicable o (C) manually open the equalizing bus disconnect switch as required o (D) manually lift the brushes and disconnect the pigtails if applicable 66. Why are electric strip heaters used in motor controllers? (A) prevent condensation of moisture o (B) minimize resistance in internal circuits o (C) keep the components at their design ambient temperature o (D) prevent freezing of movable contacts 9/10/2018 Page 16 of 40

17 U.S.C.G. Merchant Marine Exam Assistant Engineer-Limited Illustrations: A low voltage, high current testing unit consisting of an autotransformer, ammeter, and timer may be used to test the proper tripping function of a three-pole magnetic circuit breaker. What is the correct procedure for using this apparatus? (A) Each pole is tested individually with the clamp-on ammeter clamped around a single conductor with the common tripping bar attached throughout the test procedure. o (B) All poles are tested simultaneously with the clamp-on ammeter clamped around all three conductors with the common tripping bar removed. o (C) Each pole is tested individually with the clamp-on ammeter clamped around a single conductor with the common tripping bar removed throughout the procedure. o (D) All poles are tested simultaneously with the clamp-on ammeter clamped around all three conductors with the common tripping bar attached. 68. Large machines undergoing a resistance insulation testing using a megohmmeter should be discharged to remove any accumulated electrostatic/capacitive/dielectric-absorption charge stored. When should this discharge be performed? o (A) prior to conducting the insulation resistance check only o (B) after conducting the insulation resistance check only (C) prior to and after conducting the insulation resistance check o (D) while performing the insulation resistance check only If choice C is selected set score to When you are making a high potential test (insulation resistance) on the motor coils of repaired electrical machinery to ground, what would a low resistance reading indicate? o (A) high insulation power factor (B) bad insulation o (C) a high slot discharge factor o (D) good insulation 70. Referring to the containership one-line distribution diagram shown in the illustration, what is the purpose of the transformers providing power to the refrigerated container feeder bus? Illustration EL o (A) Step up the voltage from the 450 VAC main bus to the voltage required for the refrigerated container feeder bus. (B) Prevent any unintentional grounds in the refrigerated container distribution system from affecting the 450 VAC main distribution system. o o (C) Reduce the kva loading on the 450 VAC main distribution system main switchboard. (D) Step down the voltage from the 450 VAC main bus to the voltage required for the refrigerated container feeder bus. 9/10/2018 Page 17 of 40

18 EL /5/2017 Adapted for testing purposes only from HARRINGTON, Marine Engineering Copyright 1992 by the Society of Naval Architects and Marine Engineers Further reproduction prohibited without permission Page 18 of 40

19 EL /7/2017 Adapted for testing purposes only from HUNT, Modern Marine Engineer s Manual, Volume II, Third Edition Copyright 2002 by Cornell Maritime Press, Inc. Further reproduction prohibited without permission Page 19 of 40

20 EL /10/2017 Adapted for testing purposes only from GROB, Basic Electronics, Fourth Edition Copyright 1977 by McGraw-Hill, Inc. Further reproduction prohibited without permission Page 20 of 40

21 EL /10/2017 Adapted for testing purposes only from HARRINGTON, Marine Engineering Copyright 1992 by the Society of Naval Architects and Marine Engineers Further reproduction prohibited without permission Page 21 of 40

22 EL /11/2017 Adapted for testing purposes only from GROB, Basic Electronics, Fourth Edition Copyright 1977 by McGraw-Hill, Inc. Further reproduction prohibited without permission Page 22 of 40

23 EL-0023 Adapted for testing purposes only from ROSENBERG, Electric Motor Repair, Third Edition 9/18/2017 Copyright 2002 by Delmar Learning Further reproduction prohibited without permission Page 23 of 40

24 EL /12/2017 Adapted for testing purposes only from HUBERT, Operating, Testing and Preventive Maintenance of Electrical Power Apparatus Copyright 2003 Pearson Education Further reproduction prohibited without permission Page 24 of 40

25 EL /19/2017 Adapted for testing purposes only from HALL, Practical Marine Electrical Knowledge, Second Edition Copyright 1999 by Dennis T. Hall Further reproduction prohibited without permission Page 25 of 40

26 EL /10/2018 Adapted for testing purposes only from HUBERT, Operating, Testing and Preventive Maintenance of Electrical Power Apparatus Copyright 2003 Pearson Education Further reproduction prohibited without permission Page 26 of 40

27 EL /23/2018 Adapted for testing purposes only Further reproduction prohibited without permission Page 27 of 40

28 EL /25/2018 Adapted for testing purposes only from KILIAN, Modern Control Technology, 3 rd Edition Copyright 2006 by Delmar, Cengage Learning Further reproduction prohibited without permission Page 28 of 40

29 EL /25/2018 Adapted for testing purposes only from GROB, Basic Electronics, 4 th Edition Copyright 1977 by McGraw-Hill Inc. Further reproduction prohibited without permission Page 29 of 40

30 EL /29/2018 Adapted for testing purposes only from HUBERT, Operating, Testing, and Preventive Maintenance of Electrical Power Apparatus Copyright 2003 by Pearson Education, Inc. Further reproduction prohibited without permission Page 30 of 40

31 EL /29/2018 Adapted for testing purposes only from Introduction to Solid-State Devices and Power Supplies Training Series, Module 7 NAVEDTRA Further reproduction prohibited without permission Page 31 of 40

32 EL /30/2018 Adapted for testing purposes only from GROB, Basic Electronics, 4 th Edition Copyright 1977 by McGraw-Hill Inc. Further reproduction prohibited without permission Page 32 of 40

33 EL-0089 Adapted for testing purposes only from MAINI, Digital Electronics, Principles, Devices and Applications Copyright 2007 by John Wiley & Sons Ltd. 1/30/2018 Further reproduction prohibited without permission Page 33 of 40

34 EL-0096 Adapted for testing purposes only from HUNT, Modern Marine Engineer s Manual, Volume II, 3 rd Edition Copyright 2002 by Cornell Maritime Press, Inc. 2/12/2018 Further reproduction prohibited without permission Page 34 of 40

35 EL /15/2018 Adapted for testing purposes only from HUBERT, Operating, Testing, and Preventive Maintenance of Electrical Power Apparatus Copyright 2003 by Pearson Education, Inc. Further reproduction prohibited without permission Page 35 of 40

36 EL-0108 Adapted for testing purposes only from HUNT, Modern Marine Engineer s Manual, Volume II, 3 rd Edition Copyright 2002 by Cornell Maritime Press, Inc. 2/20/2018 Further reproduction prohibited without permission Page 36 of 40

37 EL /26/2018 Adapted for testing purposes only from MILLER, Industrial Electricity and Motor Controls Copyright 2008 by McGraw-Hill Companies, Inc. Further reproduction prohibited without permission Page 37 of 40

38 EL /17/2018 Adapted for testing purposes only from HARRINGTON, Marine Engineering Copyright 1992 by The Society of Naval Architects and Marine Engineers Further reproduction prohibited without permission Page 38 of 40

39 EL /18/2018 Adapted for testing purposes only Further reproduction prohibited without permission Page 39 of 40

40 EL /18/2018 Fig. C and D: Adapted for testing purposes only from BOLTON, Programmable Logic Controllers, 5 th Edition Copyright 2009 by Elsevier Ltd. Further reproduction prohibited without permission Page 40 of 40