Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Marine Electrical Systems (Set 33)
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In a typical fire detection control unit, what would be indicated by an illuminated blue light?
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30 MCQs #1 In a typical fire detection control unit, what would be indicated by an illuminated blue light? #2 Which of the following fixed temperature heat-actuated fire detectors can be reused after it has detected a fire? #3 Which of the following fixed temperature heat-actuated fire detectors is the most prone to false alarms? #4 What shipboard system uses the synchronous transmission system? #5 The shaft revolution indicator system for a fixed pitch propeller has which of the following display capabilities? #6 A pyrometer indicating system such as that used for measuring diesel engine exhaust system temperatures uses what technology? #7 A bearing temperature monitoring system such as that used for measuring selected propulsion plant bearings uses what technology? #8 A salinity indicator system such as that used to measure the salt content of potable water systems and boiler feed and condensate systems uses what technology? #9 On vessels with AC distribution systems, which of the following statements represents the most difficult problem involved in obtaining a DC potential suitable for use by computer components? #10 What statement is true concerning read only memory (ROM)? #11 What statement is true concerning random access memory (RAM)? #12 Which of the following devices represents primary storage, where the processor is able to directly read instructions and data and directly return results of its computation in fetch/execute cycles? #13 Which of the following data communication cable types offers the greatest immunity to electromagnetic "noise"? #14 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? #15 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? #16 What Ethernet cabling technology supports the greatest data transfer speeds? #17 If an 8-bit digital to analog converter (DAC) produces an analog output voltage with a range of 10 volts (0-9 volts), what is the smallest incremental step in voltage that can be generated at the output? #18 If a computer display is flickering, how may this be remedied? #19 As shown in the illustrated block diagram for a distributed automation system, what statement is true concerning the units labeled "ROS" which are remote operating system workstations? EL-0096 #20 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 #21 As shown in the illustration, what statement is true concerning each of the system gateways? EL-0098
Illustration EL-0098: the U.S. Coast Guard has not released this illustration. #22 Concerning the illustrated fire detection and alarm system, when the system is operating normally and under supervision, what is the status of the ground detector and the fire alarm relays? EL-0114 #23 Referring to the illustration pertaining to an alternator protection and alarm system, what statement is true concerning the component labeled "LO"? EL-0067 #24 Referring to the illustration pertaining to the semiautomatic navigation light panel circuit, if the buzzer sounds and the masthead indicator light comes on, what statement is true concerning acknowledging and responding to the alarm while minimizing the danger to navigation? EL-0108 #25 In an impressed current cathodic hull protection system, what statement is true concerning the composition and arrangement of the anodes? #26 While monitoring an impressed current cathodic hull protection system, which of the following measurements should remain constant in a properly operating electronically regulated system? #27 Referring to the impressed current cathodic hull protection system shown in the illustration, if required to control the impressed current to the anodes manually by using the hand adjustment potentiometer, what parameter should be maintained at a constant value? EL-0090 #28 In monitoring an impressed current cathodic hull protection system, it is important to insure that the propeller screw receive the same cathodic protection as the hull. What should be checked for? #29 Referring to the impressed current cathodic protection system shown in the illustration, if required to control the current to the anodes manually by using the hand adjustment potentiometer, what statement best represents the changes that should prompt one to recheck the reference electrode voltage (hull potential)? EL-0090 #30 What statement is true concerning the 'MS 1' contacts of the master switch shown in the illustration? EL-0102
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