ABYC Advanced Pretest Exam Questions and Answers (SCORED A+)

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