ASVAB Auto And Shop

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1/42 Questions

Overheating the engine can cause all of the following problems EXCEPT
- Burned engine bearings
- Enlarged pistons
- Melted engine parts
- Improved fuel efficiency

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2.

The device that converts an automobile’s mechanical energy to electrical energy is called the
- converter
- Alternator
- Battery
- Brakes
Correct Answer

A. Alternator

Explanation

An alternator is a device that converts an automobile's mechanical energy to electrical energy. It is responsible for generating electricity to power the electrical systems in the vehicle and recharge the battery. Unlike a converter, which typically refers to a device that changes the form or voltage of electrical energy, an alternator specifically converts mechanical energy into electrical energy. The battery in a car stores electrical energy, but it does not convert mechanical energy. Brakes are not involved in the conversion of mechanical energy to electrical energy in a car.

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3.

A primary advantage of the electronic ignition system over conventional ignition systems is
- The electronic ignition system is less expensive to repair
- The electronic ignition system requires a lower voltage to provide a higher voltage for spark
- The electronic ignition system allows for use of a lower octane fuel
- All of the above
Correct Answer

A. The electronic ignition system requires a lower voltage to provide a higher voltage for spark

Explanation

The correct answer is that the electronic ignition system requires a lower voltage to provide a higher voltage for spark. This means that the electronic ignition system is more efficient and effective in producing a spark for ignition compared to conventional ignition systems. This advantage leads to improved fuel efficiency, better engine performance, and reduced emissions.

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4.

The primary purpose of piston rings is to
- Seal the combustion chamber and allow the pistons to move freely
- Connect the piston to the crankshaft
- Allow fuel to enter the piston cylinder
- Provide lubrication to the piston cylinder
Correct Answer

A. Seal the combustion chamber and allow the pistons to move freely

Explanation

Piston rings serve the primary purpose of sealing the combustion chamber to prevent any leakage of gases during the combustion process. This ensures maximum efficiency and power output from the engine. Additionally, the piston rings also allow the pistons to move freely within the cylinder by reducing friction between the piston and the cylinder wall. This allows for smooth and efficient operation of the engine.

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5.

The crankshaft typically connects to a
- Flywheel
- Fuel pump
- Muffler
- battery
Correct Answer

A. Flywheel

Explanation

The crankshaft typically connects to a flywheel because the flywheel is responsible for storing and releasing energy during the engine's operation. As the crankshaft rotates, it transfers power to the flywheel, which then helps to maintain the engine's momentum and smooth out any fluctuations in power delivery. The flywheel also assists in starting the engine by storing rotational energy and transferring it to the crankshaft.

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1
6.

What component allows the left and right wheels to turn at different speeds when cornering?
- Differential
- Camshaft
- Valve rotator
- Battery
Correct Answer

A. Differential

Explanation

The differential is a component that allows the left and right wheels to turn at different speeds when cornering. This is important because when a vehicle turns, the outer wheel has to travel a longer distance than the inner wheel. The differential allows for this speed difference by distributing torque to each wheel independently, ensuring smooth and controlled turning.

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7.

If a car’s ignition system, lights, and radio don’t work, the part that’s probably malfunctioned is the
- Cylinder block
- Water pump
- Carburetor
- Battery
Correct Answer

A. Battery

Explanation

If a car's ignition system, lights, and radio don't work, the most likely part that has malfunctioned is the battery. The battery is responsible for providing electrical power to these components, and if it is not functioning properly or is completely dead, it will result in the car's electrical systems not working. The cylinder block, water pump, and carburetor are not directly related to the car's electrical system, so they are less likely to be the cause of the malfunction.

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1
8.

A good tool to cut intricate shapes in wood would be a
- ripsaw
- Hacksaw
- Coping saw
- Pocket knife
Correct Answer

A. Coping saw

Explanation

A coping saw is a good tool to cut intricate shapes in wood because it has a thin, narrow blade with fine teeth that can easily maneuver through tight curves and corners. The blade can also be easily replaced or adjusted to cut at different angles, making it versatile for various woodworking projects. Additionally, the coping saw's handle allows for a comfortable grip and precise control, ensuring accurate and detailed cuts.

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9.

A two-stroke engine will normally be found on
- small cars
- Large diesel trucks
- Trucks, vans, and some cars
- Snowmobiles, chainsaws, and some motorcycles
Correct Answer

A. Snowmobiles, chainsaws, and some motorcycles

Explanation

A two-stroke engine is commonly used in snowmobiles, chainsaws, and some motorcycles. This type of engine is known for its simplicity, lightweight design, and high power-to-weight ratio, making it suitable for these types of vehicles and equipment. It is not commonly found in small cars or large diesel trucks, as these vehicles typically require more complex and powerful engines.

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10.

A belt sander would best be used to
- Cut wood
- Finish wood
- Shape wood
- Keep your pants up
Correct Answer

A. Finish wood

Explanation

A belt sander is a power tool that is specifically designed for sanding and smoothing wood surfaces. It is equipped with a continuous loop of sandpaper that rotates on two drums, allowing it to quickly and efficiently remove material and create a smooth finish on wood. Therefore, it would be most appropriate to use a belt sander to finish wood.

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11.

A car equipped with limited-slip differential
- Can be readily put into all-wheel (four-wheel) drive
- Won’t lock up when the brakes are applied steadily
- Transfers the most driving force to the wheel with the greatest amount of traction
- Is rated for off-road driving
Correct Answer

A. Transfers the most driving force to the wheel with the greatest amount of traction

Explanation

A car equipped with a limited-slip differential transfers the most driving force to the wheel with the greatest amount of traction. This means that if one wheel loses traction, the limited-slip differential will automatically transfer more power to the other wheel that still has traction, allowing for better control and stability. This feature is especially useful in situations where the road conditions are slippery or uneven, as it helps to maintain traction and prevent wheel spin.

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12.

Big block engines generally have
- More than 5.9 L of displacement
- Better gas mileage than small block engines
- Less than 6 L of displacement
- Air conditioning
Correct Answer

A. More than 5.9 L of displacement

Explanation

The correct answer is "more than 5.9 L of displacement." This means that big block engines have a larger volume or capacity for air and fuel combustion compared to small block engines. This generally results in more power and torque, making them suitable for heavy-duty applications such as trucks and large vehicles.

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13.

A good tool for spreading and/or shaping mortar would be a
- Cement shaper
- hammer
- Trowel
- Broom
Correct Answer

A. Trowel

Explanation

A trowel is a tool specifically designed for spreading and shaping mortar. It has a flat, rectangular blade that is used to scoop up mortar and apply it to a surface. The flat shape of the trowel allows for even distribution of the mortar, while the sharp edges can be used to shape and smooth the mortar as needed. A trowel is commonly used in construction and masonry work to apply mortar to bricks or tiles, making it the most suitable option for spreading and shaping mortar among the given choices.

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14.

Plumb-bobs are used to
- Clean pipes
- Check vertical reference
- Fix the toilet
- Carve stones
Correct Answer

A. Check vertical reference

Explanation

Plumb-bobs are used to check vertical reference. A plumb-bob is a weight attached to a string or line, which when suspended, aligns with the force of gravity and points directly downwards. This tool is commonly used in construction, surveying, and carpentry to ensure that walls, columns, or other structures are perfectly vertical. By observing the position of the plumb-bob, one can determine if the object being measured is aligned correctly with the vertical axis.

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15.

Rebar is used to
- Measure the depth of concrete
- Smooth concrete
- Stir concrete
- Reinforce concrete
Correct Answer

A. Reinforce concrete

Explanation

Rebar, short for reinforcing bar, is a steel bar or mesh of steel wires that is used to reinforce concrete structures. It is placed within the concrete to provide additional strength and support, helping to prevent cracking and improve the overall durability of the concrete. Rebar is essential in reinforcing concrete structures such as buildings, bridges, and highways, as it helps to distribute the load and increase the tensile strength of the concrete.

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16.

Annular ring, clout, and spring head are types of
- Hammers
- Saws
- Nails
- Screwdrivers
Correct Answer

A. Hammers

Explanation

Annular ring, clout, and spring head are all types of features found on hammers. An annular ring refers to a circular ridge around the head of a hammer, which helps to prevent the handle from coming loose. Clout refers to a flat, broad head on a hammer, often used for driving nails. Spring head refers to a hammer head with a slight curve, which helps to absorb the impact and prevent the hammer from bouncing back. Therefore, the correct answer is hammers.

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17.

A ripsaw cuts
- Against the grain of the wood
- With the grain of the wood
- Most materials, including metal
- Only plastic
Correct Answer

A. With the grain of the wood

Explanation

A ripsaw cuts with the grain of the wood because the teeth on the blade of the saw are designed to remove material as it moves in the same direction as the wood's grain. This cutting technique allows for smoother and more efficient cuts, as the saw is able to follow the natural fibers of the wood. Cutting against the grain would result in a rougher cut and potentially damage the wood.

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18.

A cam belt is also known as a
- Piston
- Timing belt
- Transmission belt
- lug nut
Correct Answer

A. Timing belt

Explanation

A cam belt, also known as a timing belt, is a crucial component of an engine's internal combustion system. It synchronizes the rotation of the crankshaft and the camshaft, ensuring that the engine's valves open and close at the correct time. This synchronization is essential for the engine to function properly and to prevent any damage to the valves or pistons. Therefore, the correct answer is timing belt.

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19.

To check for horizontal trueness, the best tool to use is a
- Steel tape rule
- Plumb bob
- level
- Sliding T-bevel
Correct Answer

A. level

Explanation

To check for horizontal trueness, the best tool to use is a level. A level is designed to determine if a surface is perfectly horizontal or not. It consists of a bubble inside a vial filled with liquid. When the bubble is centered between the two lines on the vial, it indicates that the surface is level. This makes it an ideal tool for checking the horizontal trueness of objects such as tables, shelves, or floors. A steel tape rule is used for measuring length, a plumb bob is used for checking vertical trueness, and a sliding T-bevel is used for transferring angles.

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20.

A bucking bar is used to
- Drive screws
- Pull nails
- Form rivet bucktails
- Pry wood apart
Correct Answer

A. Form rivet bucktails

Explanation

A bucking bar is a tool used in riveting processes to form the bucktail or the rounded end of a rivet. This helps to secure the rivet in place and create a strong joint. The bucking bar is held against the tail end of the rivet while the rivet gun is used to drive the rivet into place. This process forms the bucktail, ensuring a secure and durable rivet installation.

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1
21.

Washers that have teeth all around the circumference to prevent them from slipping are called
- Shakeproof washers
- jaw washers
- Flat washers
- Split-lock washers
Correct Answer

A. Shakeproof washers

Explanation

Shakeproof washers are designed with teeth all around their circumference to prevent them from slipping. These teeth grip onto the surface they are placed on, providing a secure and stable connection. This feature makes shakeproof washers ideal for applications where vibrations or movement may cause regular washers to loosen or slip. By using shakeproof washers, the risk of fasteners becoming loose or dislodged is minimized, ensuring the stability and reliability of the assembly.

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22.

The tool below measures
- An inside curve
- An outside curve
- The depth of a hole
- The thickness of wire
Correct Answer

A. An outside curve

Explanation

This tool is used to measure an outside curve. It is not designed to measure an inside curve, the depth of a hole, or the thickness of wire.

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23.

The tool below is used to
- Finish concrete
- Spread joint compound
- Smooth wallpaper
- Dress wood
Correct Answer

A. Dress wood

Explanation

The tool mentioned is used to dress wood. Dressing wood refers to the process of shaping, smoothing, and finishing the surface of the wood. This can involve removing rough edges, planing the wood to achieve a desired thickness, or sanding the surface to create a smooth and polished finish.

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24.

The chisel used to cut metal is A. B. C. D.
- A
- B
- C
- D
Correct Answer

A. A

Explanation

The correct answer is A. The explanation for this answer is not available.

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25.

An induction clutch works by
- Magnetism
- Pneumatics
- Hydraulics
- Friction
Correct Answer

A. Magnetism

Explanation

An induction clutch works by utilizing magnetism. It uses an electromagnetic field to control the engagement and disengagement of the clutch. When the clutch is engaged, the magnetic field causes the clutch plates to come together, allowing power to be transmitted between the engine and the transmission. When the clutch is disengaged, the magnetic field is weakened or removed, causing the clutch plates to separate and power transmission to be interrupted. This magnetic control allows for smooth and precise operation of the clutch.

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26.

If a first-class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet are being used, what’s the mechanical advantage?
- 2
- 4
- 6
- 1
Correct Answer

A. 4

Explanation

You can calculate mechanical advantage as Length of Effort Arm ÷ Length of Resistance Arm. Simply plug in the numbers: MA = 8 ÷ 2 = 4.

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27.

The bottoms of four boxes are shown below. The boxes all have the same volume. If postal regulations state that the sides of a box must meet a minimum height, which box is most likely to be too short to go through the mail?
- 1
- 2
- 3
- 4
Correct Answer

A. 3

Explanation

The box with the largest area on the bottom will have the shortest sides. If length × width × height = volume, and all the boxes have equal volume, then the sides must be shortest on the box with the largest area on the bottom. Calculate the area of each box bottom:

No. 1 = 20 square inches
No. 2 = 35 square inches
No. 3 = 48 square inches
No. 4 = 27 square inches.

No. 3, which has the largest area, will have the shortest sides.

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28.

Looking at the figure below, when Anvil B lands on the seesaw, Anvil A will
- Remain stationary
- Hit the ground hard
- Rise in the air quickly
- Enter the stratosphere
Correct Answer

A. Rise in the air quickly

Explanation

When Anvil B lands on the seesaw, it will exert a force on the seesaw causing it to rotate. This rotation will result in Anvil A being propelled upwards quickly, causing it to rise in the air. Therefore, Anvil A will rise in the air quickly when Anvil B lands on the seesaw.

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29.

Air pressure at sea level is about 15 psi. What’s the amount of force exerted on the top of your head, given a surface area of 24 square inches?
- 360 pounds
- 625 pounds
- 5⁄8 pound
- 180 pounds
Correct Answer

A. 360 pounds

Explanation

Pressure equals force divided by area in square inches (P = F/A). You can also state this formula as F = A × P. Substitute the known quantities. F = 15 × 24 = 360 pounds.

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30.

The force produced when a boxer’s hand hits a heavy bag and “bounces” off it is called
- Response time
- Bounce
- recoil
- Gravity
Correct Answer

A. recoil

Explanation

When a boxer's hand hits a heavy bag and "bounces" off it, the force produced is called recoil. Recoil refers to the backward movement or force experienced by an object when it rebounds or bounces off another object. In this case, when the boxer's hand hits the heavy bag, the bag exerts an equal and opposite force on the hand, causing it to bounce back. This recoil force is crucial in boxing as it allows the boxer to generate power and transfer energy from their punch to the target.

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31.

Springs used in machines are usually made of
- Plastic
- Bronze
- Nylon fiber
- Steel
Correct Answer

A. Steel

Explanation

Springs used in machines are usually made of steel because steel is a strong and durable material that can withstand the forces and stresses placed on the spring during operation. Steel also has good elasticity, allowing the spring to return to its original shape after being compressed or stretched. Additionally, steel has a high resistance to corrosion, which is important for springs that may be exposed to moisture or other harsh conditions.

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32.

A clutch is a type of
- Universal joint
- Coupling
- Gear differential
- cam follower
Correct Answer

A. Coupling

Explanation

A clutch is a type of coupling that is used to connect and disconnect two rotating shafts in a mechanical system. It allows for the transmission of power from one shaft to another, or for the disengagement of the power transmission when needed. Clutches are commonly used in vehicles, such as cars and motorcycles, to engage and disengage the engine from the transmission. They are also used in various other applications where the rotation of two shafts needs to be synchronized or controlled.

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33.

When Cam A completes one revolution, the lever will touch the contact point
- Once
- Never
- Four times
- Twice
Correct Answer

A. Twice

Explanation

When the high point of the cam connects with the lever arm, the lever arm will touch the contact point. Two high points on the cam mean the lever arm will touch the contact point twice with each revolution of the cam.

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34.

A single block-and-fall is called a
- Fixed pulley
- Gun tackle
- Runner
- Sheave
Correct Answer

A. Runner

Explanation

A single block-and-fall is called a runner because it is a type of pulley system that consists of a single block or wheel with a grooved rim and a rope or cable running through it. The runner pulley allows for the movement and direction of the rope or cable to be changed, making it useful in various mechanical systems and lifting applications.

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35.

In the figure below, if the fulcrum supporting the lever is moved closer to the anvil, the anvil will be
- Easier to lift and will move higher
- Harder to lift but will move higher
- Easier to lift but will not move as high
- Harder to lift and will not move as high
Correct Answer

A. Easier to lift but will not move as high

Explanation

When the fulcrum supporting the lever is moved closer to the anvil, it reduces the lever arm length on the side of the anvil. This means that the mechanical advantage of the lever decreases, making it easier to lift the anvil. However, since the lever arm length on the other side of the fulcrum increases, the distance the anvil moves vertically will be reduced. Therefore, the anvil will be easier to lift but will not move as high.

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36.

The mechanical advantage of the block-and-tackle arrangement shown below is
- 2
- 4
- 6
- 1
Correct Answer

A. 2

Explanation

The mechanical advantage of a block-and-tackle arrangement is determined by the number of sections of rope that support the load. In this case, there are two sections of rope supporting the load, which means that the mechanical advantage is 2. This means that the arrangement can effectively multiply the force applied to the rope by a factor of 2, making it easier to lift heavy objects.

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37.

In the figure below, assume the valves are all closed. To fill the tank but to prevent it from filling entirely, which valves should be open?
- 1 and 2 only
- 1, 2, and 3 only
- 1, 2, and 4 only
- 1, 2, 3, and 5 only
Correct Answer

A. 1, 2, 3, and 5 only

Explanation

All but Valve 4 should be open. Opening Valves 1 and 2 allows water to enter the tank. Opening Valves 3 and 5 prevents water from filling the tank entirely. Opening Valve 4 allows water to leave the tank.

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38.

A way to determine the amount of power being used is to
- Multiply the amount of work done by the time it takes.
- Multiply the distance covered by the time it takes to move a load.
- Divide the amount of work done by 550 pounds per second.
- Divide the amount of work done by the amount of time it takes.
Correct Answer

A. Divide the amount of work done by the amount of time it takes.

Explanation

To determine the amount of power being used, one needs to divide the amount of work done by the amount of time it takes. This is because power is defined as the rate at which work is done or energy is transferred. By dividing the work done by the time taken, we can calculate the average power being used during that period.

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39.

A runner is being used in the figure shown. How much effort is the boy who’s lifting the 50-pound anvil using? Disregard friction, wind resistance, and the weight of the pulley and the rope.
- 50–pound effort
- 100–pound effort
- 25–pound effort
- 10–pound effort
Correct Answer

A. 50–pound effort

Explanation

Stationary pulleys give no mechanical advantage, so effort equals the weight of the crate, or 50 pounds.

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40.

In the figure below, which angle is braced most solidly?
- A
- B
- C
- All are braced equally solidly.
Correct Answer

A. A

Explanation

The brace on Angle A covers more area of the angle, so it’s more solidly braced.

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41.

In the figure below, if Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions does Gear 2 make for every 10 revolutions Gear 1 makes?
- About 16 2/3
- 12
- About 1⁄3 more
- About 20
Correct Answer

A. About 16 2/3

Explanation

To determine the answer, multiply the number of teeth Gear 1 has (D) and the number of revolutions it makes (R). Divide that number by the number of teeth Gear 2 has (d) to determine the number of revolutions Gear 2 makes (r). Because the gears are proportional, this formula will show you the ratio of teeth to revolutions. r = DR/d r = (25 × 10)/15 r = 250⁄15 = 50⁄15 = 162⁄3

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0
42.

A cubic foot of water weighs about 62.5 pounds. If an aquarium is 18 feet long, 10 feet deep, and 12 feet wide, what’s the approximate pounds-per-square-inch pressure (psi) on the bottom of the tank?
- 4.34 psi
- 5.22 psi
- 7.81 psi
- 3.21 psi
Correct Answer

A. 4.34 psi

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Quiz Edited by
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Aug 26, 2013

Quiz Created by
Purpleskunk77

ASVAB Auto And Shop

Overheating the engine can cause all of the following problems EXCEPT

Quiz Preview

The device that converts an automobile’s mechanical energy to electrical energy is called the

A primary advantage of the electronic ignition system over conventional ignition systems is

The primary purpose of piston rings is to

The crankshaft typically connects to a

What component allows the left and right wheels to turn at different speeds when cornering?

If a car’s ignition system, lights, and radio don’t work, the part that’s probably malfunctioned is the

A good tool to cut intricate shapes in wood would be a

A two-stroke engine will normally be found on

A belt sander would best be used to

A car equipped with limited-slip differential

Big block engines generally have

A good tool for spreading and/or shaping mortar would be a

Plumb-bobs are used to

Rebar is used to

Annular ring, clout, and spring head are types of

A ripsaw cuts

A cam belt is also known as a

To check for horizontal trueness, the best tool to use is a

A bucking bar is used to

Washers that have teeth all around the circumference to prevent them from slipping are called

The tool below measures

The tool below is used to

The chisel used to cut metal is A. B. C. D.

An induction clutch works by

If a first-class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet are being used, what’s the mechanical advantage?

The bottoms of four boxes are shown below. The boxes all have the same volume. If postal regulations state that the sides of a box must meet a minimum height, which box is most likely to be too short to go through the mail?

Looking at the figure below, when Anvil B lands on the seesaw, Anvil A will

Air pressure at sea level is about 15 psi. What’s the amount of force exerted on the top of your head, given a surface area of 24 square inches?

The force produced when a boxer’s hand hits a heavy bag and “bounces” off it is called

Springs used in machines are usually made of

A clutch is a type of

When Cam A completes one revolution, the lever will touch the contact point

A single block-and-fall is called a

In the figure below, if the fulcrum supporting the lever is moved closer to the anvil, the anvil will be

The mechanical advantage of the block-and-tackle arrangement shown below is

In the figure below, assume the valves are all closed. To fill the tank but to prevent it from filling entirely, which valves should be open?

A way to determine the amount of power being used is to

A runner is being used in the figure shown. How much effort is the boy who’s lifting the 50-pound anvil using? Disregard friction, wind resistance, and the weight of the pulley and the rope.

In the figure below, which angle is braced most solidly?

In the figure below, if Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions does Gear 2 make for every 10 revolutions Gear 1 makes?

A cubic foot of water weighs about 62.5 pounds. If an aquarium is 18 feet long, 10 feet deep, and 12 feet wide, what’s the approximate pounds-per-square-inch pressure (psi) on the bottom of the tank?