Deck 14: Designing Pneumatic Systems

Question 1

A compressor requires a motor or an engine to operate.

Answer 1

True

Question 2

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

Answer 2

single

Question 3

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.

Answer 3

shuttle

Question 4

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

A) 11.7
B) 12.7
C) 13.7
D) 14.7

Question 5

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

A) dryer
B) lubricator
C) receiver
D) regulator

Question 6

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

A) rubber
B) brass
C) steel
D) aluminum

Question 7

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.

A) Pascal's
B) Newton's
C) Kirchhoff's
D) Archimedes'

Question 8

All hydraulic fluids are petroleum-based.

Question 9

A(n)____________________ is a diagram of a system that uses graphic symbols to represent pneumatic,hydraulic,or electrical components.

Question 10

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

A) pressure;mass
B) volume;area
C) pressure;area
D) volume;mass

Question 11

Forces in pneumatic and hydraulic systems are usually ____.

A) nonexistent
B) very high
C) very low
D) electrical

Question 12

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

Question 13

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

A) oscillating
B) reciprocating
C) sliding
D) rotating

Question 14

____ is the resistance of a fluid to flow.

A) Compression
B) Pressure
C) Viscosity
D) Hydraulicity

Question 15

A five-port valve has one ____ valve.

A) flow
B) cylinder
C) exhaust
D) air inlet

Question 16

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

Question 17

A confined liquid can be used to gain mechanical advantage.

Question 18

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) Pascal's
B) Ohm's
C) Newton's
D) Archimedes'

Question 19

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

Question 20

The three-port valve has three positions.

Question 21

What is the area of a piston with diameter 6 cm?

Question 22

Where are lubricators used?

Question 23

What are some advantages of pneumatic systems over hydraulic ones?

Question 24

What dangers does compressed air pose if used incorrectly?

Question 25

Suppose pistons A (diameter 1.25 inches)and B (diameter 0.75 inches)are connected by a simple hydraulic system.How much force does B exert if the input force on A is 3 pounds?