ABYC Advanced Pretest Questions & Answers 100% Accurate!!

ABYC Advanced Pretest Questions & Answers 100% Accurate!! contributing factor? - ANSWER-Temperature rating of shore-cord insulation An inter-circuit short can cause: - ANSWER-" All of the above; Unrelated circuits to operate simultaneously; Components to work at reduced capacity; An over-current situation" Which of the following is addressed by ABYC A-32? - ANSWER-Power conditioning and conversion LED navigation lights are required to meet: - ANSWER-72 Colregs Which of the following are recommended for 3-phase shore power? - ANSWER-Power conditioning and phase-rotation monitoring Which of the following is an example of a power-quality issue? - ANSWER-Nuisance tripping of magnetic circuit breakers What tool can be used instead of a power-quality analyzer to measure phase amplitude? - ANSWER-DVOM All of the following are functions of a generator voltage regulator EXCEPT: - ANSWER-Control generator power factor A true-DC wind generator might be inadvertently powered by the batteries if a ________ is not part of the installation. - ANSWER-Blocking diode Which power sources can be seamlessly transferred? - ANSWER-" All of the above; AC generators; Shore power; Inverters" Which of the following needs to be considered when retrofitting an electric-propulsion engine? - ANSWER-Proper ventilation of batteries In a NMEA 2000 digital switching system it is necessary to use - ANSWER-Terminating resistors A boat's hull potential is measured: - ANSWER-Between a reference cell and main engine negative Which statement is correct pertaining to a NMEA 2000 system? - ANSWER-" Both a and b; Resistors are to be used only at both ends of the system; NMEA cables provide power and data in a single cable" Slower than normal engine cranking could be an indication of all the following except: - ANSWER-Battery fully charged Which tool could not-be used to diagnose excessive voltage drop? - ANSWER-Ammeter An advantage of an insulated DC ground system is: - ANSWER-Easier detection of ground faults Which equipment may not need to be changed when a boat built by an international builder using 50 Hz AC is imported to the US? - ANSWER-Water Heater Which of the following could cause a shore-power ELCI main breaker to trip? - ANSWER-Multiple shore-power inlet neutral conductors on the load side of the ELCI are connected The maximum battery cable gauge that can be connected to a terminal via wingnut is: - ANSWER-8 VFDs control the speed of electric motors (pumps, fans, hoists) by regulating ____? - ANSWER-frequency Do VFDs typically display fault codes, and how can you determine the nature of a fault? - ANSWER-Yes, they do; refer to the manufacturer's list of fault codes. According to ____ , seamless transfers between sources cannot maintain parallel for more than I second - ANSWER-ABYCA-32 True or False: four-wire sensors are the most common configuration in today's engine-control systems. - ANSWER-FALSE; two- and three-wire configurations are more common. According to ABYC A-32, "synchronization" means matching all EXCEPT - ANSWER-amperage Compared to traditional US power sources, _____ delivers three times the power with only 1.5 times the conductor material. - ANSWER-three-phase power In a delta configuration, the phase voltage is _____ the line voltage - ANSWER-equal to