Marine Electrical Exam Questions & Answers 100% Correct

frequency - ANSWER -how often electrical potential alternates electrical potential - ANSWER -the difference in electrical charge between the battery's positive and negative terminal volts - ANSWER -units used to measure electrical potential. Voltage - ANSWER -the pressure or force available in an electrical circuit. Another definition of voltage describes it as a difference of potential from one point in the circuit to another. Hertz - ANSWER -unit of measure for frequency digital multimeter - ANSWER -lets you see what is happening inside an electrical circuit self-scaling - ANSWER -means the multimeter will always select the appropriate scale for whatever it is you are measuring total circuit length - ANSWER -from the source of power to the load and back to the source grounding - ANSWER -not normally current-carrying. Primary use is as a safety conductor. ABYC - ANSWER -The American Boat and Yacht Council: a consortium of boaters, marine surveyors, boat manufacturers, and the US Coast Guard, working together to establish marine safety standards and recommended practices. overcurrent protection - ANSWER -a fuse or circuit breaker sources of DC power - ANSWER -The most widely used DC power source is a battery. Other sources of DC power include solar panels, wind generators, and alternators. Engine Cranking Battery - ANSWER -battery that is designed to deliver a short burst of power, followed by a quick recharge.