Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Marine Electrical Systems (Set 19)
30:00
|Question 1 of 30
Question Navigator
Correct Incorrect Pending Starred
Question 1 of 30
What is the opposition to the establishment of magnetic lines of force in a magnetic circuit called?
Browse Questions in Set 19
30 MCQs #1 What is the opposition to the establishment of magnetic lines of force in a magnetic circuit called? #2 In terms of load type, in what type of alternating current circuit will the voltage always lead the current? #3 How may the unit "hertz" be best described? #4 What will happen to an electrical coil when the direct current flowing through the coil is increasing? #5 18 August 2014 --------------------------------------- 119 United States Coast Guard Electrical-Electronics-Control Engineering National Maritime Center Assistant Engineer-DDE 11. (2.1.1.2-2) Which of the following statements is correct for the illustrated circuit in figure "B"? Illustration EL-0020 #6 In a series circuit what is the total applied voltage equal to? #7 In a series circuit, which value will remain unchanged at all places in the circuit? #8 Referring to figure "B" of the illustration, what statement is true? EL-0020 #9 Referring to figure "B" of the illustration, what statement is true? EL-0020 #10 Four lamps are connected in series in a single circuit. If one of the lamp burns out, what will happen to the other lamps? #11 Which of the following statements concerning a circuit with parallel connected resistors is correct? #12 Which of the following statements is true concerning circuits with parallel connected resistances? #13 What statement is true concerning the total resistance of a parallel circuit? #14 What statement is true concerning the electrical diagram shown in figure "B" of the illustration? EL-0019 #15 Four lamps are connected in parallel in a single circuit. If one of the lamp burns out, what will happen to the other lamps? #16 Which statement is true concerning the total power consumed in a parallel circuit? #17 Which of the electrical properties listed will always be the same across each component in a parallel circuit? #18 What will happen to the total circuit resistance when additional parallel circuits are added to a circuit? #19 As shown in figure "A" of the illustration, with the switch closed what statement is true if 'R1' and 'R2' have unequal resistance values? EL-0019 #20 In a simple DC circuit, the resistance is held constant while the applied voltage is halved. What will be the effect on the current flow as compared to the original current? #21 An electrical component is connected across a 120 volt 60 hertz AC supply. What is the current drawn by the component if the impedance is 200 ohms? #22 In a 60 Hz AC system, what is the duration in seconds for one complete cycle? #23 An AC generator produces 60 Hz at 1800 RPM. If the generator speed is increased to 1830 RPM, what will happen to the frequency in Hz? #24 How is the power dissipated as heat in a direct current circuit calculated? #25 A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor? #26 What is the total resistance of figure "B" of the illustrated circuit if the resistance of R1 is 3 ohms, R2 is 4 ohms, and R3 is 5 ohms? EL-0020 #27 What is the total resistance of the electrical circuit illustrated in figure "B" if the resistance of R1 is 2 ohms, R2 is 4 ohms, and R3 is 4 ohms and the battery voltage is 6 volts? EL-0019 #28 In the illustration, 1, 2, 3 and 4 are 12 volt batteries. What will be the nominal voltage as read by a voltmeter across the output of the battery bank? EL-0107 #29 If the supply voltage is 220 volts 60 Hz, what is the operating voltage of the motor controller control circuit illustrated in figure A of the illustration? EL-0011 #30 What will be the total current in figure "B" of the illustrated circuit with the switch closed if the applied voltage is 24 volts and the resistance of R1 is 3 ohms, R2 is 4 ohms, and R3 is 5 ohms, respectively? EL-0020
Question Discussion & Notes
0Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.
Loading mariner discussions...