ASVAB Shop Information Practice Test

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Which tool is pictured above?

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There are two types of wrenches: open-end and box-end. A wrench with closed ends is called a box-end wrench.

What type of pliers would you use to make a precise bend to a wire before connecting it to a receptacle?

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Needle-nose pliers have very narrow jaw tips that let them squeeze into tight spaces, and they are perfect for jobs where precision is needed. You can use them to zero in on the specific point along the wire that needs to be shaped.

What type of screwdriver would you need for this screw?

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A Torx screw head is star shaped with 6 rounded lobes.

What tool is used to make indentations that serve as marks for drilling operations?

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Making a small indentation with a center punch allows a drill to stay on target long enough to get a hole started.

Which of these saws would be best for cutting through an iron bar?

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Hacksaws are used for cutting metals such as iron, steel, aluminum, and copper.

The tool shown above serves primarily to

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The tool pictured is a hole cutter bit, also known as a hole saw. They are non-adjustable, so each one can only drill one size of hole.

What type of hammer is best for shaping metal?

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The ball peen hammer has a regular hammer head on one face and a rounded striking surface on the other face. Common uses are shaping metal, setting rivets, and driving cold chisels.

Which of the following is a picture of a rasp?

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The other tools pictured are a chisel, file, and pin punch. A rasp is essentially a very coarse file with a flat surface to smooth surfaces.

What type of tool is used to join metals for electrical connections?

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A soldering gun is a tool that is often used for soldering electrical connections.

A spindle, sleeve, and thimble are all components of what tool?

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An outside micrometer is used to measure the diameter of cylindrical objects and can also measure the thickness of a flat object. It is comprised of an anvil, spindle, sleeve, thimble, and ratchet

What type of nut uses a cotter pin?

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A castellated nut uses a cotter pin to lock it into place, which must pass through a hole in the bolt or stud that the nut is threaded on.

The air-fuel mixture is determined by your car's

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While cars used to use carburetors to ensure that the air-fuel mixture was correct in its ratio, modern vehicles use an ECM (electronic control modules) to determine the optimum air-fuel mixture.

This type of nut is easiest to tighten without tools

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A wing nut has "wings" on each side for hand-tightening ease.

Where is oil held when it isn't lubricating the system?

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The oil pan is where oil drains to; it is the reservoir. When the car is running, the oil pump draws oil out of the pan into the oil galleries.

Brake systems are hydraulically operated, meaning that they are operated by

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A car's braking system is controlled by the movement of pressurized liquids.

A wrench is used to apply what to a fastener?

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Wrenches use leverage to apply torque, or twisting force, to a fastener.

Making large (wider than 1/2") holes in wood is called

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Generally, making large (bigger than 1/2" diameter) holes is done through a process called boring. This can be done using holesaws, rather than drill bits.

You need to make a cut straight across a small cable. Which type of plier best fits your needs?

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A diagonal plier employs jaws whose cutting edges join at a diagonal angle. Unlike scissors, they make a cut by "wedging" the material apart.

This device dampens the up and down movements of the wheels.

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The shock absorbers absorb shock impulses! They generally convert the kinetic energy into heat energy, which is allowed to dissipate.

The transmission's job is to

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The transmission is responsible for matching the engine speed to the speed desired by the driver and vehicle.

Which of the following types of pliers is pictured?

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Because of their long shape, needlenose pliers are useful for reaching into tight areas and working with delicate components. They often also have a wire cutter built into them.

The catalytic converter converts toxic gases into compounds such as

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Catalytic converters convert pollutants like carbon monoxide, hydrocarbons, and nitrogen oxides into carbon dioxide and water.

A miter box is helpful in making

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A mitre box (or miter box) has slots that guide hand saws in making angled cuts, usually at 45 degree and 90 degree angles.

Engine coolant is circulated throughout an engine by the

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A water pump circulates water and coolant (antifreeze) throughout the system. Cooling systems are essential for a well-functioning engine and should be maintained regularly.

The length of a nail between its point and its head is called the

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The shank is the length of a nail, measured between the pointed end and the head.

Which engine part opens and closes the engine's exhaust and intake valves?

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The camshaft is responsible for opening the intake valve (which lets the air-fuel mixture enter the combustion chamber), as well as exhaust valve (which lets waste gases to exit the same chamber).

A nut ensures that which fastener is held in place?

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A bolt is similar to a screw in that they are both threaded fasteners. A bolt, however, typically has a hexagonal or square head and is held in place by a nut.

A coping saw is used to make

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Coping saws are best for cutting final details and utilize thin, flexible blades.

Most automobile batteries are made of water and which acid?

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Batteries are generally made of lead plates immersed in sulfuric acid and water. As the battery loses/uses up power, the sulfuric acid is reduced to water. Charging your car's batteries means that you're restoring the composition back to its original sulfuric acid and water electrolyte.

The pictured component moves up and down inside the cylinder. It is called the

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Powered by expanding gas in the combustion chamber, the piston is a cylindrical object that moves up and down in the engine's cylinders.

What type of combustion system powers automobiles?

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Automobiles are powered by internal combustion systems. This means that fuel is burned internally, inside a combustion chamber, and that fuel is used to power the parts of the engine.

With multiport fuel injection, the injectors are located in the

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With this fuel injection system, the injectors are located in the intake manifold, with their sprays aimed directly at the intake valves.

The two arms of a carpenter's square meet at which angle?

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A steel square's tongue and blade meet at a 90-degree angle, or right angle. The steel square (also known as a carpenter's square) can be used for laying out a right angle, as well as taking other measurements.

Your car (a non-diesel engine) needs more oil. Which rating is best?

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"C" quality ratings are for diesel engines and would not be appropriate for your car. SA motor oil would work, but not very well (we've developed much better oil since then). SN is your best choice!

What type of joint is shown in the figure?

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Dovetail joints are especially strong due to their unique set of triangular-shaped sections (tails) that correspond to matching sections (pins).

Power to run a car's CD player comes from the

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A car battery powers most all of the car's accessories.

A hammer with a regular striking face and, on the opposite face, a rounded end is called a

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A ball-peen hammer has one flat striking surface and an opposite rounded surface used for shaping metal and making gaskets.

A rubber mallet would be best used to

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Rubber mallets are best used for delicate work, for putting lighter pressure on or removing fragile metals, woods, or other materials.

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