ASVAB Automotive Information Test
An internal combustion engine in which the cylinders are aligned in two banks, which are at an angle to each other, is known as a
The angle of the two cylinder banks makes a "V" shape.
How does an increase in pressure affect the coolant's boiling point?
The boiling points of liquids are increased with increased pressure. And conversely, liquids boil much more quickly at high altitude (like at the top of Mount Everest) and can leave boiled foods uncooked.
If the distance between two parallel sides of a bolt head is 3/8 of an inch, which socket drive size should you use?
To loosen or tighten a bolt, you should use a socket that matches exactly the measurement of the bolt.
An inside caliper measures
The legs of an inside caliper measure the distance between the two inside edges of an object. This is a tool for measuring the internal size of an object.
Welders using the electric-arc welding method wear face shields to protect themselves from
During this process, the electric arc give off a dangerously high-intensity light: ultraviolet light. Welders must use protection or risk burning their skin and eyes.
Which system is required to start an automobile?
A car’s electrical system controls lighting, starting, charging, and accessories.
If one complete revolution of the steering wheel causes the wheels to turn 20 degrees, what is the steering ratio?
A complete revolution of the steering wheel is 360 degrees. Thus, the steering ratio is 360:20 which reduces to 18:1 (360/20=18).
The part of the tire that grips the rim of the wheel is the
The bead is the inner edge of a tire. It is normally made with high-strength rubber and is reinforced with steel wire.
Automatic transmissions transmit engine torque to the transmission via a
The torque converter is a type of fluid coupling that connects the engine to the transmission.
The brake caliper is an assembly that houses the
Disc brakes slow the rotation of the wheels using friction, which is created by pushing the brake pads against the brake discs with a set of calipers.
Which of the following is the location of the differential on a drive axle?
A differential allows cars to rotate at different speeds as the car goes around a corner. It helps the drive axle split the power between the two drive wheels.
In the diagram above, what is the location of the fuel pressure regulator?
As pictured above, the fuel pressure regulator regulates pressure in the fuel rail according to intake manifold vacuum.
The four strokes of a four-stroke engine cycle are (in the correct order)
During the intake step, the engine receives fuel to burn. Then the fuel is compressed, then the fuel is burned (power), then the exhaust is released.
Which part of the fuel system sprays a fuel and air mixture into the engine's combustion chamber?
Fuel injectors atomize the fuel by pumping it through a small nozzle under high pressure. Atomizing the fuel is the process of breaking it into a fine misted spray.
What part of a car's exhaust system is responsible for turning the toxic components of engine exhaust into less toxic compounds?
After being collected in the exhaust manifold, exhaust gases are then sent to the catalytic converter where toxic pollutants are converted into less toxic compounds by catalyzing a redox reaction.
Which of the following is NOT part of an internal combustion engine?
The clutch is part of the drive train system.
Drill bits can be loosened and tightened using a
The chuck is the part of a drill that holds the bit. A chuck key is used to tighten and loosen a drill bit. Handily, the chuck of some drills are now adjustable by hand and do not require a key.
In a four-stroke engine, which of the following is NOT one of the four strokes?
Each stroke is the movement of the piston from one end of the cylinder to the other. The four strokes are called Intake, Compression, Power, and Exhaust.