ATT FC COMP TEST WITH COMPLETE SOLUTIONS

What three factors determine the severity of an electric shock? - ANSWER-1) Amount of current flowing through the body, 2) Path of current through the body, 3) Length of time the body is in the circuit How much current can be lethal? - ANSWER-50-150 milliamperes How much more DC than AC does it take to freeze a body to a conductor? - ANSWER-5 times: 12 ma AC, 60 ma DC What are three types of burns? - ANSWER-1) Electrical, 2) Arc, 3) Thermal Contact What are three well-known examples of electrical protection devices - ANSWER-1) Fuse, 2) Circuit Breakers, 3) Ground-Fault Circuit Interrupters (GFCIs) Never use ____ or ____ to extinguish an electrical fire because they are electrically conductive substances. - ANSWER-water, foam What are the 4 steps that should be taken in the case of an electrical fire? - ANSWER-1) de-energize, 2) call the fire department, 3) control / put out the fire, 4) report fire Schematic diagrams are drawn so that the date or signal flows through the circuit from ____ to ____. - ANSWER-left, right What are the two methods to troubleshoot a circuit? - ANSWER-1) trial and error, 2) logical procedure What are the four steps to troubleshooting a circuit? - ANSWER-1) Analyze the circuit, 2) Check the setup, 3) Calculate and measure values, 4) Check the results. What are three characteristics of an open? - ANSWER-1) infinite resistance, 2) no circuit current, 3) measure applied voltage What are three characteristics of a short? - ANSWER-1) no resistance, 2) increases circuit current, 3) measures 0 voltage What are the three characteristics of a changed value? - ANSWER-1) resistance increases or decreases, 2) increases or decreases circuit current, 3) measures voltage other than calculated What is a representation of AC voltage or current? - ANSWER-The sine wave