ATT Comp Test (FC) Complete Questions and Answers Set.

What is electrical Shock? - A sensation and muscular spasm when electric current passes through the body. What is a GFCI? - Ground Fault Circuit Interrupter (automatically shut's off electrical flow in the event of an overload) TS Transformers - Open: T doesn't generate output V Short: could be partial which would then change number of coils so Ep would change or Es What is voltage - Potential of electric energy; pressure of electrons pushing away from each other. Current is defined as __________________________. - a flow of electric charge What are some factors affecting shock? - Amount of current, path of current, amount of body resistance, and length of time current flows in body What is not a primary factor in severity of an electric shock? - The general health of the victim. Ways to prevent shock? - Isolate, insulate & ground What is the minimum AC current required to cause severe muscle contractions? - 12 mA How much more DC is required to freeze the body than AC? - 5 times more What types of burns are there? - Electrical burns, arc burns, and thermal contact burns Electrical burns are what? - Electrical current flowing through tissue or bones Arc burns are what? - Electrical current flowing through tissue or bones Thermal contact burns are what? - When skin comes in contact with hot surfaces of overheated electrical conductors Factors of electrical accidents - Unsafe equipment, unsafe environment, and unsafe work practices What should you do first if someone has been shocked? - Remove the victim from the source. What type of protection is worn when use of a tool produces sparks and debris? - Safety goggles. What category includes electrical fires? - Class C. Switches have __________ resistance when closed, and ____________ resistance when open. - minimum, maximum Type of switches - Toggle, slide, rotary, and push button. Single or double pole and throw. Fuses and circuit breakers are both protection devices, however, while fuses are not ____________, circuit breakers are. - reusable Are capacitors circuit protection devices? - No. A _______ ________ fuse will typically blow in about one second, while a ________ ________ could take 1-30 seconds. - Fast acting; slow blow What happens to the current path if the wire in a fuse melts? - It stops. What do the following letters mean in a basic schematic diagram? C, D, Q, S, T, TP, AVC - C - Capacitor, D - Diode, Q - Transmitter, S - Switch, T-Transformer, TP - Test Point, AVC - Automatic Volume Control voltage drop - The difference in voltage across an electrical device that has current flowing through it. Applied voltage - Sum of all voltage drops in the circuit. Faults in series are: - Open, Short, Changed value What are the four basic TS steps? - A)Analyze circuit B)Check Setup C)Calculate/measure values D)Check Results What fault provides no resistance to current flow? - A short. What fault causes resistance to increase or decrease? - A changed value. What fault causes current to stop? - An open.