Download ASE CERTIFICATION PRACTICE PAPER 2026 COMPLETE SOLUTIONS and more Exams Mechanics of Materials in PDF only on Docsity!
ASE CERTIFICATION PRACTICE PAPER 2026
COMPLETE SOLUTIONS
โ abrasive cleaning. Answer: cleaning that relies on physical abrasion, such as wire brushing and glass bead blasting โ ABS. Answer: abbreviation for anti-lock brake system. ABS electronically monitors wheel speed and prevents wheel lock-up by rapidly cycling the brakes during panic stops and when stopping on low-friction surfaces โ ABS control valves. Answer: control valves that are actuated by the ABS electronic control unit (ECU) to ensure wheels are optimally braked. โ acidity. Answer: in lubrication, the presence of acid type chemicals, which are identified by the acid number. Acidity within oil causes corrosion, sludges and varnish to increase โ actuator. Answer: A control device that delivers mechanical action in response to a vacuum or electrical signal. โ additive. Answer: a material added to the engine oil to give it certain properties
โ aeration. Answer: the process of mixing air with liquid โ air bag (SRS). Answer: actuated component of the supplemental restraint system developed for safety. โ air duct. Answer: a tube, channel or other tubular structure used to carry air to a specific location โ air gap. Answer: space or gap between spark plug electrodes, motor and generator armatures and field shoes โ air-fuel ratio. Answer: the proportion of air to fuel by weight in the fuel mixture drawn into the engine. โ air lock. Answer: a bubble of air trapped in a fluid circuit that interferes with the normal circulation of the fluid. โ alignment. Answer: an adjustment to bring into a line โ alloy. Answer: a mixture of different metals (e.g., solder, and alloy consisting of lead and tin
โ anti-lock. Answer: a safety-oriented system which senses wheel rotation (at one or more axles) during braking and cycles the brakes to prevent locking those wheels. โ arcing. Answer: electrical energy jumping across a gap. โ aspect ratio. Answer: the relationship between the height of a tire from bead to tread, and the tread width; usually expressed as a percentage of the tread width โ asymmetric. Answer: having unequal surfaces or sizes โ atmospheric pressure. Answer: the weight of air at sea level (14. lbs per sq in) or at higher altitudes โ automatic locking hubs. Answer: front wheel drive hubs that can engage and disengage themselves from the axles automatically. โ atomization. Answer: the breaking down of a fluid into a fine mist that is lighter than air โ axial. Answer: having the same direction or being parallel to the axis of rotation
โ axial load. Answer: a type of load placed on a bearing that is parallel to the axis of the rotating shaft โ axial play. Answer: movement parallel to the axis of rotation โ backfire. Answer: the sudden combustion of gasses in the intake or exhaust manifold, resulting in a loud explosion โ backing plate. Answer: component to which the brake shoes, wheel cylinder, and related components are attached. โ backlash. Answer: (usually said of gears) total play measured in both direction. For example, timing gear backlash measures the total rotation of the timing gear when forced as far as possible in each direction with the crankshaft gear held fast โ backpressure. Answer: Pressure created by restriction in an exhaust system. โ balance shaft. Answer: weighted shaft used on some engines to reduce vibration
โ battery cell. Answer: the part of the storage battery made from two dissimilar metals and an acid solution. a cell stores chemical energy to be used later as electrical energy. โ bead. Answer: steel reinforced inner edge of a tire, which seals against the wheel rim flange โ bearing clearance. Answer: the amount of space left between a shaft and the bearing surface for lubricating oil to enter. โ bearing race. Answer: machined circular surface of a bearing against which the roller or ball bearings ride โ bimetallic. Answer: two kinds of metal, with different thermal expansion rates โ blowby. Answer: the unburned fuel and products of combustion that leak past the piston rings and into the crankcase at the last part of the combustion stroke. โ bolt diameter. Answer: measurement across the major diameter of a bolts threaded area or the bolt shank
โ bolt head. Answer: part of the bolt that the socket or wrench fits over in order to torque or tighten the bolt โ boot. Answer: protective rubber cover with accordion pleats used to contain lubricants and exclude contaminates. Located at each end of the rack and pinion assembly and on FWD CV-joints โ boring. Answer: the act of removing large amounts of metal from a cylinder or bearing bore in order to remove damaged metal, correct alignment problems, and increase diameter โ brake adjustment. Answer: under normal circumstances, self adjusting brakes should not require manual adjustment. However, after replacing brakes or performing brake related service, it is advisable to initially adjust them. โ brake balance. Answer: brake balance is achieved when all brakes on all axles do their fair share of work โ brake bleeding. Answer: the process of purging air from a hydraulic brake system. โ brake drum. Answer: Cast iron housing attached to an axle shaft or spindle, on which the brake shoes press to stop its rotation.
โ bracket. Answer: used to secure parts to the body or frame โ bushing. Answer: a liner, usually removable, for a bearing; an anti- friction liner used in place of a bearing; a type of bearing that is used to support rotating shafts. โ caliper. Answer: the clamping device containing friction material mounted to pads. When actuated, the caliper applies braking force to both sides of the rotor โ camber. Answer: the attitude of a wheel in which, when viewed from the front, the distance between the tops and bottoms of the tires are different. โ carbon. Answer: a nonmetallic element that forms in an engine's combustion chamber when oil is burned. โ carbon monoxide. Answer: a colorless, odorless gas, which is highly poisonous. Produced by incomplete combustion. Absorbed by the bloodstream 400 times faster than oxygen. โ carbonize. Answer: the process of carbon formation within an engine, such as on the spark plugs and in the combustion chamber
โ castellation. Answer: slots cut in a bolt head or nut flange through which a cotter pin is inserted to secure the fastener. โ caster. Answer: angle formed by the relationship of the king pin axis and a vertical axis through the wheel center line when viewed from the side of the vehicle. โ catalyst. Answer: a compound or substance that can speed up or slow down the reaction of other substances without being consumed itself. In an automotive catalytic converter, special metals (platinum or palladium) are sed to promote combustion of unburned hydrocarbons and reduce carbon monoxide. โ catalytic converter. Answer: An emission-control device located in the exhaust system that contains catalysts, which reduce hydrocarbons, carbon monoxide and nitrogen oxides in the exhaust gases โ center link. Answer: A steering linkage component , which attaches the pitman arm to the idler arm, tie rods or crosslink โ center of gravity. Answer: the point about which the weight of a vehicle is evenly distributed; the point of balance
