Free Printable Principles of Pneumatic Pressure & Flow

1.

In a pneumatic cylinder the pressure rises to a level that creates a force equal and opposite to the force created by the load.

a)

True

b)

False

2.

Calculate the theoretical force of extension of the cylinder. Round your answer to the nearest tenth. $F_{P\ }=\ P\ \times0.7854\ \times D^2\ \times0.1$

a)

13706.5 N

b)

13706.5 lbs

c)

137064.7 N

d)

137064.7 lbs

3.

Calculate the theoretical force of extension of the cylinder. Round your answer to the nearest tenth. $F_{P\ \ }=\ P\ \times0.7854\ \times D^2\times0.1$

a)

6091.7 N

b)

5918.4 N

c)

59183.6 N

d)

5733.4 N

4.

$F_{P\ }=P\ \times0.7854\ \times D^2$

Calculate the theoretical force of extension of the cylinder. Round your answer to the nearest tenth.

a)

2297.3 lbs

b)

2297.3 N

c)

229.7 lbs

d)

229.7 N

5.

$F_P=P\times0.7854\times D^2$

Calculate the theoretical force of extension of the cylinder. Round your answer to the nearest tenth.

a)

3612.8 N

b)

361.3 N

c)

423.9 N

d)

3745.8 N

6.

$F_P=P\times0.7854\times\left(D_P^2-D_R^2\right)\times0.1$

Calculate the theoretical force of retraction of the cylinder. Round your answer to the nearest tenth.

a)

35378.3 N

b)

35378.3 lbs

c)

353783.4 N

d)

353783.4 lbs.

7.

$F_P=P\times0.7854\times\left(D_P^2-D_R^2\right)\times0.1$

Calculate the theoretical force of retraction of the cylinder. Round your answer to the nearest tenth.

a)

18774.2 N

b)

187742.1 N

c)

179543.2 N

d)

19876.9 N

8.

Calculate the theoretical force of retraction of the cylinder. Round your answer to the nearest tenth. $F_P=P\times0.7854\times\left(D_P^2-D_R^2\right)$

a)

2776.4 N

b)

2776.4 lbs

c)

277.6 N

d)

277.6 lbs

9.

$F_P=P\times0.7854\times\left(D_P^2-D_R^2\right)$

Calculate the theoretical force of retraction for the cylinder. Round your answer to the nearest tenth.

a)

2721.4 lbs

b)

272.1 lbs

c)

363.3 lbs

d)

2879.2 lbs

10.

Fill in the blank.

The annular area of a cylinder is is less than the piston area because of the __________.

a)

rod

b)

pipe

c)

spring

d)

fluid

11.

$F=k\times d$

Given the Extending Output Force formula (above), if you would compress the spring 8 N/mm, how much force would it take to move a distance of 10 mm?

a)

8 N

b)

80 N

c)

10 N

d)

0.8 N

12.

Fill in the blank.

The force output of a cylinder when extending can be calculated by multiplying the pressure times the _____.

a)

Rod area

b)

Annular area

c)

Piston area

d)

Stroke area

13.

Fill in the blank.

The net area over which the pressure acts when retracting a double acting cylinder can be found by subtracting the rod area from the _________.

a)

Piston area

b)

Surface area

c)

Cam area

d)

Bushing area

14.

Fill in the blank.

Pascal's Law applies only to ____________.

a)

Gases

b)

High octane fluids

c)

Fluids in motion

d)

Confined fluids

15.

What is it called when there are large forces created by small input forces in Pneumatics?

a)

Pneumatic leverage

b)

Pneumatic pressure

c)

Pneumatic cylinder

d)

Spring Constant

16.

True or False

Fluid flowing in a pipe is confined because the pipe is closed on all sides.

a)

True

b)

False

17.

Fill in the blank.

To increase the force of an actuator, increase the pressure or the _______.

a)

area

b)

air

c)

energy

d)

momentum

18.

Fill in the blank.

To convert gauge pressure to absolute, ______.

a)

Add atmospheric pressure to the gauge pressure

b)

Add 14.7 psi to the psig reading

c)

Add 101 kPa to the kPa gauge reading

d)

All of the above

19.

Fill in the blank.

Boyle's law states that ________.

a)

Pressure in a confined volume is equal

b)

Pressure is force intensity

c)

Pressure is inversely proportional to the volume

d)

Volume is directly proportional to the pressure

20.

Pneumatic pressure can be expressed as what?

a)

Gauge Pressure

b)

Absolute Pressure

c)

Both Gauge and Absolute Pressure

d)

None of the choices

21.

$P_{abs}=P_G+P_{atm}$ Calculate the absolute pressure at sea level if given 101.3 kPa as the gauge pressure. Remember Patm = 101 kPa.

a)

202.3 kPa abs

b)

116.0 kPa abs

c)

116.0 psia

d)

202.3 psia

22.

$P_{abs}=P_G+P_{atm}$ At sea level, calculate the following gauge pressure if the absolute pressure is 181.7 psia. Remember Patm = 14.7 psia.

a)

167 psi

b)

162 psi

c)

176 psi

d)

167 kPa

23.

Fill in the blank.

Air flows from high pressure areas to low pressure areas until the pressure is ______.

a)

the same

b)

different

c)

gone

d)

None of the choices

24.

True or False

Air friction is an example of resistance in a pneumatic system.

a)

True

b)

False

25.

Calculate the final pressure ( $P_2$ ) in absolute terms for the following condition.

$P_1=31\ psia$ , $V_1=50\ ft^3$ , $V_2=5\ ft^3$

a)

$P_2=620\ psia$

b)

$P_2=310\ psia$

c)

$P_2=3100\ psia$

d)

$P_2=62\ psia$

26.

Calculate the final pressure $P_2$ in gauge terms for the following condition.

$P_1=15\ psia$ , $V_1=25\ ft^3$ , $V_2=2\ ft^3$

a)

172.8 psig

b)

186.9 psig

c)

187.5 psig

d)

178.2 psig

27.

Fill in the blank.

The speed of an unloaded cylinder is calculated by ____________.

a)

Multiplying piston area by the volume of flow

b)

Dividing piston area by the volume of flow

c)

Multiplying extension speed by the volume of flow

d)

Dividing volume of flow by the piston area

28.

Operating costs and maintenance are increased due to which of the following?

a)

friction losses

b)

high pressure

c)

volume of air needed

d)

All of the answers

29.

An air compressor creates what?

a)

Flow

b)

Gas

c)

Pressure

d)

14.7 psia

30.

Which is true about an air compressor?

a)

Creates pressure by increasing the density of air in a closed container

b)

There are no pistons used to compress the air

c)

Produces flow, not pressure, which is the same as a hydraulic system

d)

None of the choices

Principles of Pneumatic Pressure & Flow

Total questions: 30

Worksheet time: 1hrs 12mins

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