ABYC Marine Electrical Certification Exam Review Correct 100%

circuit breaker mean? a. The breaker is inexpensive b. The breaker will have lots of nuisance trips c. The breaker will trip out regardless of conditions d. The breaker will only trip at 150% of its rated amperage b. 8 amps (E-11 Table XII Conductor Ampacity - Flexible Cords) - ANSWER maximum current carrying capacity for an flexible cord of 16 AWG with 2 current carrying conductors inside the engine spaces is a. 6 amps b. 8 amps c. 10 amps d. 20 amps c. only in one direction - ANSWER A diode is a semiconductor that passes current a. in any direction b. only with high voltages c. only in one direction d. when used as a triggering device b. 24.5 amps - ANSWER Allowable amperage for AC conductors of 14 AWG, 105 degree C insulation, outside the engine spaces, when 2 current carrying conductors are bundled together is a. 35 amps b. 24.5 amps c. 20.8 amps d. none of the above True - ANSWER T or F: Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection requirements. c. 285 - ANSWER Allowable amps less than 50 volts (not bundled). You have a cable that runs from a battery to a bow thruster. All components are in the forward cabin. The wire is good 105 C rated #0 AWG. How many amps can safely pass through that cable? a. 200 b. 242.3 c. 285 d. 330 d. A factory installed length of wire included with a piece of equipment - ANSWER Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection requirements. A pigtail is defined as: a. A factory molded cord set for shorepower. b. A length of wire (less than 7") installed by technician to a piece of electronic equipment c. The factory wiring attached to a bilge pump - d. A factory installed length of wire included with a piece of equipment b. The total current will increase - ANSWER in a parallel circuit, the more resistive loads you add: a. The total voltage will increase b. The total current will increase c. The total voltage will decrease d. The t o t a l current w i l l decrease c. 6 " (A-31.6.1) - ANSWER Strain relief shall be provided for all wiring passing through the battery charger case to relieve strain on terminals, splices or internal wiring. Unless a strain relief method is integral with the case for wiring passing through, a means to achieve strain relief shall be installed within inches of the case. a. 3 " b. 5 " c. 6 " d. 10 " b. There could be severe radio interference from the new device. - ANSWER What is a possible problem with installing a new solid state Voltage regulator to replace a manual one? a. Overcurrent protection will have to match new amperage draw from device. b. There could be severe radio interference from the new device. c. Reverse influx could result, and diodes will have to be installed to modify voltage flow. d . None of the above F (impedance refers to AC systems) - ANSWER (T or F) Impedance can be defined as the total resistance flow in a D.C. system D. None of the above - ANSWER When installing a starter over current protection must be within inches of the battery. A. 7" B. 40" C. 72" D. None of the above d. Not allowing the engine to start when not in neutral - ANSWER A neutral safety switch is used for: a. Safely switching between forward and reverse without damaging transmission b. Not allowing the engine to start with gear in neutral c. Safely allowing someone to be in the water (like skier) without risk of propeller strike d. Not allowing the engine to start when not in neutral d. All of the above - ANSWER A successful customer experience includes: a. Being neat and prompt b. Asking question to verify a complaint c. Listening to the customer d. All of the above b. The resistivity of copper - ANSWER In the formula for circular mils, for our purposes "K" is equal to 10.75. What does this number represent? a . The wire thickness b. The resistivity of copper c. The rating of the wire insulation d. Black Magic c. Insulation temperature rating too low - ANSWER All of the following could cause a conductor to overheat except. a. Undersize conductor b. Excessive amperage c. Insulation temperature rating too low d. Corroded connection d. 4 - ANSWER How many conductors may be attached to a single terminal stud? a. 1 b. 2 c. 3 d. 4 d. 90 - ANSWER Each installed battery shall not move more than one inch in any direction when pulling force of ______ lbs or twice battery weight is applied. a. 60 b. 70 c. 80 d. 90 e. 100 a. wire nuts - ANSWER Multi wire plugs and receptacles used in conjunction with harness type wiring systems shall incorporate means except: a. wire nuts b. molded connectors c. insulation grips d. extended terminal barrels e. all the above