Auto and Shop Information - Mechanical Systems

A wrench is used to apply what to a fastener?

Torque.

What tool is used by electricians to route new wiring through walls?

Fish tape.

If the distance between two parallel sides of a bolt head is 3/8 of an inch, which socket drive size should you use?

3/8

A nut ensures that which fastener is held in place?

Bolt.

This type of nut is easiest to tighten without tools _________.

Wing.

Which type of nut is this?

Hex.

When accurate measurements of small distances are needed, it is BEST to use a _________.

Micrometer.

A c-clamp is tightened with the _________.

Turning of a screw.

The tool shown below serves primarily to _________.

Drill holes of one size only.

The type of screwdriver pictured is a _________.

Phillips.

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

Outside micrometer.

Which type of wrench is used to turn screw or bolt heads designed with a hexagonal socket (recess) to receive the wrench?

Allen wrench.

How does an inclined plane provide an advantage in lifting heavy objects?

By increasing the distance over which force is applied.

What is the purpose of a wedge in a mechanical system?

To separate or split objects.

What is the purpose of a gear in a mechanical system?

To transmit motion and power between rotating shafts.

Which type of simple machine consists of a rigid bar that pivots on a fixed point?

Lever.

A wheel and axle are used in which of the following scenarios?​

Turning a steering wheel.

What role does a lever play in mechanical systems?

To magnify force or distance to overcome a resistance.

How does a wedge help in splitting objects apart?

By applying a concentrated force to split objects apart.

How does a pulley make it easier to lift heavy objects?

By changing the direction of applied force.

How does a pulley system make it easier to lift heavy objects?

By distributing the weight of the load.

In a system of gears, if a large gear drives a smaller gear, which of the following is true?

The smaller gear will rotate faster than the larger gear.

How does a wheel and axle system help in transferring energy?

By rotating around a common axis to transfer energy.

In a gear system, what is the relationship between the number of teeth on two gears and their mechanical advantage?

The mechanical advantage is higher when the driven gear has more teeth.

How does an inclined plane make it easier to move objects vertically?

An inclined plane reduces the force needed to move objects vertically.

How does the length of the lever arm affect the mechanical advantage of a lever system?

A longer lever arm results in a higher mechanical advantage.

Which type of simple machine is a seesaw an example of?

Lever.

A lever is a simple machine that multiplies force through a fulcrum. Which of the following is an example of a first-class lever?

A seesaw.

A simple machine that reduces friction between moving surfaces is a _________.

Bearing.

A device that converts rotational motion into linear motion is a _________.

Screw.

What type of simple machine is a gear?

Wheel and axle.

A device that uses gears to increase or decrease speed and torque is a _________.

Gearbox.

A device that uses pressurized fluid to transmit force is a _________.

Hydraulic system.

In a gear system, what is the purpose of the smaller gear being driven by the larger gear?

Provides higher speed output.

Which of the following is NOT a simple machine?

Gear.

What is the primary function of a hydraulic system?

To transmit force through a liquid.

What is the primary function of a bearing in a machine?

To reduce friction.

How does increasing the incline angle of a plane affect the force required to move an object?

Requires more force.

In a lever system, where is the fulcrum typically positioned to exert the most force?

Closer to the load side.

What is the purpose of a thermostat in a heating system?

To control the temperature of the system.

In a pulley system with two fixed pulleys, what is the mechanical advantage?

1

What is the main purpose of a hydraulic jack?

To lift heavy objects.

What is the primary function of a belt in a machine?

To transmit rotational motion.