Exam 14: Designing Pneumatic Systems

All hydraulic fluids are petroleum-based.

To calculate the force a cylinder can exert,you must know the ____ of the fluid entering the cylinder and the ____ of the piston.

A compressor requires a motor or an engine to operate.

Where are lubricators used?

____ is the resistance of a fluid to flow.

The normal air pressure at sea level is ____ pounds per square inch (psi).

Two common types of compressor are the ____-piston compressor and the sliding-vane compressor.

Double-acting cylinders have the same piston area on both sides,so they can exert equal pressure in both directions.

In commercial cylinders,a plastic or ____ seal is used to form a tight barrier to prevent fluid from escaping around the piston.

What are some advantages of pneumatic systems over hydraulic ones?

A(n)____________________ is a fluid with an independent volume that,for practical purposes,does not change.

When a force is applied to a gas in a container,the force tends to decrease the distance between the molecules.____ third law,which describes how each action is accompanied by an equal but opposite reaction,tells us that there must also be a force pushing the molecules away from each other.

According to ____ law,when a pressure or a force is applied to a confined liquid,that force is transmitted to all parts of the liquid in all directions.

A container with one movable wall is called a pneumatic ____________________.

Cylinders that are constructed so that air pressure is applied to only one side of the piston are called ____________________-acting cylinders.

A five-port valve has one ____ valve.

A(n)____________________ valve allows a single-acting cylinder to be controlled from two locations.It is a "T" connector with three ports,two air inlets,and one air outlet.

A confined liquid can be used to gain mechanical advantage.

From the compressor output,the compressed air is fed into a storage tank,called the ____.

The three-port valve has three positions.