Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Marine Electrical Systems (Set 21)
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Question 1 of 30
Which of the following statements concerning figure "6" of the illustration is true? EL-0026
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30 MCQs #1 Which of the following statements concerning figure "6" of the illustration is true? EL-0026 #2 As shown in figure "6" of the illustration, what does the symbol represent as used in electrical drawings? EL-0026 #3 Which electrical schematic symbol shown in the illustration represents a normally closed thermostat? EL-0059 #4 Which of the electrical schematic symbols shown in the illustration represents a normally closed limit switch? EL-0059 #5 What is the shape of the schematic symbol for an operational amplifier used in an analog circuit? #6 In figure "1" of the illustration, what type of circuit breaker trip element is featured? EL-0033 #7 What statement is true concerning the electrical diagrams for the motor controller shown in the illustration? Illustration EL-0007 #8 What type of electrical diagram for the autotransformer type motor controller is shown in the illustration? Illustration EL-0012 #9 What type of electrical diagram for the electrical distribution system is shown in the illustration? Illustration EL-0014 #10 What type of electrical diagram for the shunt wound DC motor is shown in the illustration? Illustration EL-0052 #11 What type of electrical diagram for the steering control systems is shown in the illustration? Illustration EL-0192
Illustration EL-0192: the U.S. Coast Guard has not released this illustration. #12 What is the circuit shown in the illustration used to measure? EL-0024
Illustration EL-0024: the U.S. Coast Guard has not released this illustration. #13 What is the instrument called a galvanometer used to measure? #14 What is an ohmmeter used to measure? #15 What practice could potentially damage a multimeter? #16 In what situation would an electrical phase sequence indicator be useful? #17 An internal resistance is placed in series with the meter movement of which of the following instruments? #18 When a resistor is used as a shunt and is connected in parallel with a meter movement coil, what capability does this provide? #19 Periodic testing using a special camera may be performed to detect potentially dangerous loose or corroded bus bar and controller connections. What is the name of this testing technology? #20 What is an ammeter used to measure? #21 Why are external shunts sometimes used with ammeters? #22 How should the shunt used in an ammeter be connected? #23 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? #24 To properly use a clamp-on-type ammeter to check current flow, what must be done FIRST? #25 As shown in figure "A" of the digital multimeter screen shown in the illustration, what would be the significance of the symbol indicated by "1" being illuminated? EL-0047 #26 Which of the listed statements is correct when using an digital multimeter set up as an ohmmeter? #27 As shown in figure "D" of the digital power meter shown in the illustration, what type of single phase load is under test for power measurement? EL-0256 #28 When testing a capacitor with an digital multimeter set up as an ohmmeter, what would be the indication on the display when testing an initially discharged capacitor in good condition? #29 If a digital multimeter set up to measure AC volts reads slightly above 'zero' when its leads are disconnected, what is this a result of? #30 When compared to an electronic digital voltmeter, the main disadvantage of the Simpson 250 analog multimeter is which of the following?
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