| Term | Definition |
|---|
| What poisonous gas is in vehicle exhaust? | Carbon Monoxide (CO) |
| What are Material Safety Data Sheets (MSDS)? | They supply specific information regarding first aid treatment for a chemical, disposal procedures of a chemical and ingredients of a chemical. |
| Class C fires involve the burning of what? | Electrical equipment |
| While discussing shop safety rules, it is important to do what? | Keep hands, clothing, and wrenches away from rotating parts such as cooling fans |
| When can you substitute metric for English wrenches, or vice versa? | Never |
| What is not likely to occur when using shop air? | Skin rash |
| What is matter? | It takes up space and has weight when subjected to gravity |
| What is a good conductor? | An atom with more than 4 electrons in its valence |
| What element is most commonly used as an electrical conductor? | Copper |
| What is Ohm? | The measurement for resistance |
| What is voltage? | The pressure to move electrons |
| What is made through the vehicle's chassis? | Ground connection back to the negative batter post of an automobile |
| What functions does the battery perform during normal vehicle operation? | Provides electrical energy for the accessories when the engine is not running, acts as a voltage stabilizer for the vehicle electrical system, and serves as the current source for starting |
| What is overlap? | Describes the number of crankshaft degrees that both valves are open |
| What is the camshaft responsible for doing? | Opening the valves, controlling the rate of opening and closing, and regulating how long the valve is open |
| The lifter converts the cam's rotary motion into what? | An up-and-down action in the valve train |
| What is duration? | The distance the valve is lifted off its seat when fully open |
| When should a pin punch be used? | To remove the seal and inner bearing from the hub/rotor |
| Preloading the bearing must be done after what? | Installing the outer wheel bearing, washer, and retaining nut |
| What do bias-ply tires have? | Plies that are layered in opposite directions on top of one another |
| What does tire rotation do? | Increases the tire life in most circumstances |
| When tightening wheel lug nuts with 5 lugs to a specified torque, which pattern should you use? | A star pattern |
| What does the term "radial" mean? | That the belts are at a 90 degree angle to the tire centerline, or run from bead to bead |
| What do directional type of wheels provide for? | Increased brake cooling |
| What is offset? | Refers to the distance the wheel's mounting face is located from the actual center of the wheel |
| What is the slip angle? | Much lower in radial than bias belted tires, this improves traction |
| Do chrome lug nuts need to be used on chrome wheels? | No |
| What is stroke? | The distance the piston travels from top dead center (TDC) to bottom dead center (BDC) |
| What is octane? | A measure of fuel's ability to resist denotation |
| What are the four strokes of an internal combustion engine? | Intake, compression, power, and exhaust |
| What is the most effective air/fuel ratio? | 14.7:1 |
| What are the four events in each engine stroke? | Valve position, piston movement, fuel, and crank rotation |
| What is a box-end wrench? | A wrench that comely encircles the nut or bolt |
| What is the objective of torquing fasteners? | To ensure that you achieve a specified clamping force between two components you must also adjust the torque specification for linear extension length |
| What pliers can be used to grip and bend large objects? | Combination, vise-grip, and channel locks pliers |
| When should care be used with screwdrivers? | Care must be taken to be sure to use a screwdriver whose blade fits snugly into the screw. Care should also be taken while using the screwdriver. The screwdriver could slip out of the screw and stab the technicians hand |
| What will happen when the center punch is used incorrectly? | To depression it makes in the metal will incorrectly guide the drill bit and cause the hole to be in the wrong spot |
| When the spindle contacts the anvil on a standard 0-1" English micrometer what should it read? | Zero |
| What is required to measure a valve guide bore? | "T" gauge and a micrometer |
| How many complete rotations must the thimble of a standard English micrometer turn to travel through a reading of 1 inch? | 40 |
| When a vehicle is stopping, what is occurring between the brake pads and rotor that is actually making it stop? | Friction |
| A new tire on dry pavement will result in what? | The highest coefficient of friction |
| A permanent magnet generator uses what to develop an AC signal? | The principle of induction |
| All ignition systems are divided into what? | Two electrical sections, a primary circuit and a secondary circuit |
| What is the coil for? | The power supply for the secondary circuit |
| When performing a compression test, what should you make sure of? | Make sure all spark plugs are removed and throttle blocked open before cranking the engine. The ignition system and fuel system should also be disabled |
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