ATT TEST 1 QUESTIONS AND ANSWERS VERIFIED SOLUTIONS (GRADED A)

ATT TEST 1 QUESTIONS AND ANSWERS VERIFIED SOLUTIONS (GRADED A) “Electrical Shock - CORRECT ANSWER Sensation and muscular spasm cause when electric current passes through the body" "Burns - CORRECT ANSWER Electrical burns, arc burns, thermal contact burns" "Electrical burns - CORRECT ANSWER Electrical current flowing through tissue or bones" "Arc burns - CORRECT ANSWER High temperatures near the body produced by electric arc or explosion" "Thermal contact burns - CORRECT ANSWER When skin comes in contact with hot surfaces of overheated electrical conductors" "Electrical Arcs - CORRECT ANSWER Where short circuit occurs; may cause fires" "Ground-fault circuit interrupters - CORRECT ANSWER " Electrical Shock - CORRECT ANSWER Sensation and muscular spasm cause when electric current passes through the body" "Voltage - CORRECT ANSWER Potential of electric energy; pressure of electrons pushing away from each other" "Current - CORRECT ANSWER Flow of electrons" "Most dangerous paths - CORRECT ANSWER Hand to hand & left hand to either foot" "Factors affecting shock - CORRECT ANSWER Amount of current, path of current, amount of body resistance, length of time current flows in body" "3 ways to prevent shock - CORRECT ANSWER Isolate, insulate & ground" "Grounding conductor - CORRECT ANSWER Used to form a low resistance path from the ground to the metallic tool case" "12MA - CORRECT ANSWER Minimum AC current required to cause severe muscle contractions" "The body - CORRECT ANSWER Acts like a conductor when it becomes part of a circuit" "5xs - CORRECT ANSWER How much more DC is required to freeze the body rather than AC" "Burns - CORRECT ANSWER Electrical burns, arc burns, thermal contact burns" "Electrical burns - CORRECT ANSWER Electrical current flowing through tissue or bones" "Arc burns - CORRECT ANSWER High temperatures near the body produced by electric arc or explosion" "Ground-fault circuit interrupters - CORRECT ANSWER " Most common electrical injury - CORRECT ANSWER Burns" "Primary factors for shock severity? - CORRECT ANSWER 1) amount of current 2)path it takes through the body 3)length of time in circuit" "3 ways to protect against electrical hazards - CORRECT ANSWER 1)insulation 2)guarding 3)grounding" "Definition of class C fire - CORRECT ANSWER Electrical fire" "PASS definition (fire extinguisher) - CORRECT ANSWER P-pull pin A-aim S-squeeze S-sweep" "Powers of ten addition/subtraction rule - CORRECT ANSWER Exponents must be the same" "Powers of ten multiplication rule - CORRECT ANSWER Add exponent values" "Powers of ten division rule - CORRECT ANSWER Subtract exponent values" "Metric prefixes addition/subtraction rule - CORRECT ANSWER Metric prefixes must be the same" "Metric prefixes multiplication rule - CORRECT ANSWER Convert to powers of ten, add exponents then multiply coefficients" "Metric prefixes division rule - CORRECT ANSWER Convert to powers of ten, subtract exponents" "Metric prefixes in order G-P - CORRECT ANSWER Giga, mega, kilo, unit, milli, micro, nano, pico" "Sign for Giga - CORRECT ANSWER G" "Sign for Mega - CORRECT ANSWER M" "Sign for kilo - CORRECT ANSWER K" "Sign for unit - CORRECT ANSWER N/A" "Sign for milli - CORRECT ANSWER m" "Sign for micro - CORRECT ANSWER u" "sign for nano - CORRECT ANSWER N" "Sign for pico - CORRECT ANSWER P" "Convert 5000 units to kilo - CORRECT ANSWER 8K" "Convert 8Kilo to mega - CORRECT ANSWER .008M" "Convert 6000 micro to milli - CORRECT ANSWER 6m" "Convert 8milli to units - CORRECT ANSWER .008 units" "What 2 parts make up an atom - CORRECT ANSWER Nucleus/ electron" "Electron has what charge - CORRECT ANSWER negative" "Proton has what charge - CORRECT ANSWER Positive" "Use the two hand method when dealing with electricity A)true B)false - CORRECT ANSWER B) false Two hand rule doesn't exist" Shock severity primary factors - CORRECT ANSWER 1. Amount of current flowing through body 2. Path of the current through body 3. Length of time the body is in the circuit" "Electric shock - CORRECT ANSWER Electricity passing through the body" "Types of Electrical burns - CORRECT ANSWER A. Electrical burns B. Arc burns C. Thermal contact burns" "What is a current? - CORRECT ANSWER Movement or FLOW of electrons" "Ground - CORRECT ANSWER Part of circuit that is electrically connected to earth" "White or natural grey insulator color - CORRECT ANSWER Grounding conductor that complete circuit" "Any other color of insulator (red black) - CORRECT ANSWER "Hot wires" ungrounded" "What is a capacitor - CORRECT ANSWER Stores an electrical charge (capacity)" "What is a Shorting probe - CORRECT ANSWER Discharges capacitors so they can be worked on" "In case of fire - CORRECT ANSWER 1. De energize the circuit 2. Call fire dept. 3. Control/extinguish fire with correct extinguisher 4. Report to appropriate authorities" "What do you do before tool use - CORRECT ANSWER Inspect it" "Use googles with what equipment - CORRECT ANSWER Equipment that sparks/causes debris" "Always assume what? - CORRECT ANSWER Assume that the tool is hot. Grab by handle" "What not to use on class C fire - CORRECT ANSWER Water" "What to use on a class C fire - CORRECT ANSWER CO2 or dry chemical" Shock severity primary factors - CORRECT ANSWER 1. Amount of current flowing through body 2. Path of the current through body 3. Length of time the body is in the circuit" "Electric shock - CORRECT ANSWER Electricity passing through the body" "How to protect people from the hazards of caused by electricity - CORRECT ANSWER A. Insulation B. Guarding C. Grounding D. Safe work practices" "Electrical protection devices examples - CORRECT ANSWER 1. Fuses 2. Circuit breakers 3. Ground fault interrupters" "Green or green w/ yellow stripes insulator color - CORRECT ANSWER Equipment grounding conductors" "White or natural grey insulator color - CORRECT ANSWER Grounding conductor that complete circuit" "Any other color of insulator (red black) - CORRECT ANSWER "Hot wires" ungrounded" "What is a capacitor - CORRECT ANSWER Stores an electrical charge (capacity)" "What is a Shorting probe - CORRECT ANSWER Discharges capacitors so they can be worked on" "Define potential difference - CORRECT ANSWER Difference between the ability of two charged objects to provide the force that moves electrons" "Electrons + or - - CORRECT ANSWER Negative charge (exit and they're mad "negative")" "Protons + or - - CORRECT ANSWER Positive charge" "Electric charge unit of measure - CORRECT ANSWER Coulomb. 6.25X10^18" "Voltage - CORRECT ANSWER Moves the electrons from one point to another. (Water pressure) is" "Unlike charges repel or attract - CORRECT ANSWER Attract" "Like charges repel or attract - CORRECT ANSWER Repel" "Current - CORRECT ANSWER Flow of electrons from negative to positive" "What is an ampere - CORRECT ANSWER Unit of measure for a current" "Resistor - CORRECT ANSWER Electronic component used as a limiting device to adjust and set voltage and current levels in a circuit" "What's an ohm - CORRECT ANSWER Electrical RESISTANCE unit" "What's a watt - CORRECT ANSWER Power is measured in watts" "Voltage - CORRECT ANSWER A measure of the difference in electric potential between two points in space, a material," "Voltage - CORRECT ANSWER Potential of electric energy; pressure of electrons pushing away from each other" "Current - CORRECT ANSWER Flow of electrons" "Most dangerous paths - CORRECT ANSWER Hand to hand & left hand to either foot" "Factors affecting shock - CORRECT ANSWER Amount of current, path of current, amount of body resistance, length of time current flows in body" "3 ways to prevent shock - CORRECT ANSWER Isolate, insulate & ground" "Grounding conductor - CORRECT ANSWER Used to form a low resistance path from the ground to the metallic tool case" "12MA - CORRECT ANSWER Minimum AC current required to cause severe muscle contractions" "The body - CORRECT ANSWER Acts like a conductor when it becomes part of a circuit" "5xs - CORRECT ANSWER How much more DC is required to freeze the body rather than AC" "Extremely high arcs - CORRECT ANSWER Damage equipment dispersing metal fragments" "Low energy arcs - CORRECT ANSWER Explode containing flammable gas, vapors, or combustible dusts" "Factors of electrical accidents - CORRECT ANSWER 1. Unsafe equipment 2. Unsafe environment e work practices" "Insulator - CORRECT ANSWER Any material with high resistance to electrical current" "Identify conductors and cables - CORRECT ANSWER American wire gauge size, max voltage, temperature & manufacturers name or trademark" "Grounding conductors - CORRECT ANSWER Green or green with yellow" "Circuit completing conductors - CORRECT ANSWER Gray colored" "Ungrounded conductors - CORRECT ANSWER Any color other than green white or gray" "50 voltz - CORRECT ANSWER Must be guarded against accidental contact" "600 volts or more - CORRECT ANSWER Made with metal enclosed equipment or enclosed in a vault or area with lock" "Grounding - CORRECT ANSWER Conductive connection between electrical circuit and the earth or ground plane" "Types of grounds - CORRECT ANSWER Service system and equipment" "Ungrounded conductors - CORRECT ANSWER Any color other than green white or gray" "600 volts or more - CORRECT ANSWER Made with metal enclosed equipment or enclosed in a vault or area with lock" "50 voltz - CORRECT ANSWER Must be guarded against accidental contact" "Grounding - CORRECT ANSWER " "Circuit protection devices - CORRECT ANSWER Fuses, circuit breakers and ground-fault circuit interrupters" "Thermal contact burns - CORRECT ANSWER When skin comes in contact with hot surfaces of overheated electrical conductors" "Electrical Arcs - CORRECT ANSWER Where short circuit occurs; may cause fires" "Extremely high arcs - CORRECT ANSWER Damage equipment dispersing metal fragments" "Low energy arcs - CORRECT ANSWER Explode containing flammable gas, vapors, or combustible dusts" "Factors of electrical accidents - CORRECT ANSWER 1. Unsafe equipment 2. Unsafe environment e work practices" "Insulator - CORRECT ANSWER Any material with high resistance to electrical current" "Identify conductors and cables - CORRECT ANSWER American wire gauge size, max voltage, temperature & manufacturers name or trademark" "Grounding conductors - CORRECT ANSWER Green or green with yellow" "Circuit completing conductors - CORRECT ANSWER Gray colored" "Ungrounded conductors - CORRECT ANSWER Any color other than green white or gray" "50 voltz - CORRECT ANSWER Must be guarded against accidental contact" "600 volts or more - CORRECT ANSWER Made with metal enclosed equipment or enclosed in a vault or area with lock" "Grounding - CORRECT ANSWER Conductive connection between electrical circuit and the earth or ground plane" "Types of grounds - CORRECT ANSWER Service system and equipment" "Ungrounded conductors - CORRECT ANSWER Any color other than green white or gray" "600 volts or more - CORRECT ANSWER Made with metal enclosed equipment or enclosed in a vault or area with lock" "50 voltz - CORRECT ANSWER Must be guarded against accidental contact" "Grounding - CORRECT ANSWER " "Circuit protection devices - CORRECT ANSWER Fuses, circuit breakers and ground-fault circuit interrupters" "Anode a)positive b)negative - CORRECT ANSWER a)positive" "Cathode a)positive b)negative - CORRECT ANSWER b)negative" "Define retentivity - CORRECT ANSWER The level of ability of a material to retain residual magnetism." "Resistance is measured in - CORRECT ANSWER Ohms (Ω)" "How are schematics read? - CORRECT ANSWER Left to right" "Voltage is measured in - CORRECT ANSWER Volts" "Current is measured in - CORRECT ANSWER amperes (amps)" "What 3 things does a multimeter measure - CORRECT ANSWER Voltage, current, resistance" "Know schematic symbols for fuses, breakers, double pole/single pole switches, capacitors, etc - CORRECT ANSWER " "2 types of fuses - CORRECT ANSWER Slow blow/fast action" "Circuit breaker - CORRECT ANSWER Fancy fuse that can be reset" "2 types of circuit breaker - CORRECT ANSWER Thermal/magnetic" "Define (NO) related to a switch - CORRECT ANSWER Normally open" "Define (NC) related to a switch - CORRECT ANSWER Normally closed" "If a switch is open it allows current to flow A)true B)false - CORRECT ANSWER B)false If a switch is open it's not connected so no current is flowing and the circuit is incomplete" "Minimum AC current normally req'd to cause severe muscular contractions - CORRECT ANSWER 12 ma" "Conductor - CORRECT ANSWER Object that provides a path for electricity to flow" "Voltage - CORRECT ANSWER Force or pressure that moves current" "Resistance - CORRECT ANSWER Opposition to current flow" "What is resistance measured in? - CORRECT ANSWER Ohms" "Grounding conductor - CORRECT ANSWER Low resistance wire attached to equipments metallic case that causes chore t to by pass human operator" "Electrical accidents caused by a combination of 3 factors - CORRECT ANSWER A. Unsafe equipment B. Workplaces made unsafe by the environment C.unsafe work practices" "How to protect people from the hazards of caused by electricity - CORRECT ANSWER A. Insulation B. Guarding C. Grounding D. Safe work practices" "Electrical protection devices examples - CORRECT ANSWER 1. Fuses 2. Circuit breakers 3. Ground fault interrupters" "Green or green w/ yellow stripes insulator color - CORRECT ANSWER Equipment grounding conductors" "First step while combating fire - CORRECT ANSWER Remove power" "Define potential difference - CORRECT ANSWER Difference between the ability of two charged objects to provide the force that moves electrons" "Electrons + or - - CORRECT ANSWER Negative charge (exit and they're mad "negative")" "Protons + or - - CORRECT ANSWER Positive charge" "Electric charge unit of measure - CORRECT ANSWER Coulomb. 6.25X10^18" "Voltage - CORRECT ANSWER Moves the electrons from one point to another. (Water pressure) is" "Unlike charges repel or attract - CORRECT ANSWER Attract" "Like charges repel or attract - CORRECT ANSWER Repel" "Current - CORRECT ANSWER Flow of electrons from negative to positive" "What is an ampere - CORRECT ANSWER Unit of measure for a current" "Resistor - CORRECT ANSWER Electronic component used as a limiting device to adjust and set voltage and current levels in a circuit" "What's an ohm - CORRECT ANSWER Electrical RESISTANCE unit" "What's a watt - CORRECT ANSWER Power is measured in watts" "Voltage - CORRECT ANSWER A measure of the difference in electric potential between two points in space, a material," "Types of Electrical burns - CORRECT ANSWER A. Electrical burns B. Arc burns C. Thermal contact burns" "What is a current? - CORRECT ANSWER Movement or FLOW of electrons" "Ground - CORRECT ANSWER Part of circuit that is electrically connected to earth" "Minimum AC current normally req'd to cause severe muscular contractions - CORRECT ANSWER 12 ma" "Conductor - CORRECT ANSWER Object that provides a path for electricity to flow" "Voltage - CORRECT ANSWER Force or pressure that moves current" "Resistance - CORRECT ANSWER Opposition to current flow" "What is resistance measured in? - CORRECT ANSWER Ohms" "Grounding conductor - CORRECT ANSWER Low resistance wire attached to equipments metallic case that causes chore t to by pass human operator" "Electrical accidents caused by a combination of 3 factors - CORRECT ANSWER A. Unsafe equipment B. Workplaces made unsafe by the environment C.unsafe work practices" "In case of fire - CORRECT ANSWER 1. De energize the circuit 2. Call fire dept. 3. Control/extinguish fire with correct extinguisher 4. Report to appropriate authorities" "What do you do before tool use - CORRECT ANSWER Inspect it" "Use googles with what equipment - CORRECT ANSWER Equipment that sparks/causes debris" "Always assume what? - CORRECT ANSWER Assume that the tool is hot. Grab by handle" "What not to use on class C fire - CORRECT ANSWER Water" "What to use on a class C fire - CORRECT ANSWER CO2 or dry chemical" "First step while combating fire - CORRECT ANSWER Remove power"