# Quiz on Chapter 1: Fluid Power Basics, Laws, Principles & Vacuum

1. Most hydraulic circuits are designed by:

1. mechanical engineers.
2. fluid power engineers.
3. fluid power distributor salesmen.

2. Atmospheric pressure at sea level is equal to approximately:

1. 14.7 Hg
2. 14.7 psi
3. 30 psi

3. Gauges that read pounds per square inch absolute (psia):

1. show atmospheric pressure on their scales.
2. do not show atmospheric pressure on their scales.
3. have nothing to do with atmospheric pressure.

4. Static head pressure of hydraulic oil is equal to approximately:

1. .1 psi per foot of elevation.
2. .2 psi per foot of elevation.
3. .4 psi per foot of elevation.

5. The power of vacuum comes from:

1. the power of a pump.
2. earth's atmosphere.
3. the size of a pump.

6. Vacuum generators use:

1. compressed air to create a vacuum.
2. an electric motor to create vacuum.
3. an air motor to create vacuum.

7. Pascal's Law states that pressure is produced by the pump and motor of a hydraulic system.

1. True
2. False

8. Pressure in a fluid power system comes from:

1. resistance to flow.
2. motor horsepower.
3. pump volume.

9. A pressure gauge reading of 100 bar would be equivalent to:

1. 2940 psi
2. 1070 psi
3. 1450 psi

10. When a gas or liquid is heated it will:

1. contract.
2. stay the same.
3. expand.