Physics and Engineering Concepts Worksheet

The boiling point of a given liquid varies:

• Inversely with volume

• Inversely with pressure

• Directly with pressure

• Directly with volume

If a double-acting cylinder in a 3,000 psi system has a piston with a surface area of three square inches on the extension side, and a rod with a cross section area of one square inch attached to the piston on the other side, approximately how much force will the actuator be able to produce when retracting?

• 9,000 pounds

• 6,000 pounds

• 3,000 pounds

• 1,000 pounds

Answer explanation

The equation for force in a hydraulic system is:

F=P×A

F = P \times A

where:

• F is the force (in pounds-force, lbf),

• P is the hydraulic pressure (in psi),

• A is the effective area of the piston (in square inches).

For the retraction side, the effective piston area is reduced due to the presence of the rod.

So the retraction-side area is:

Aretract=Apiston−Arod

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The term pressure is defined as:

• Force per unit area

• Mass (weight) per unit volume

• Mass per unit area

• Force per unit volume

The distance between two successive corresponding points on a wave are known as:

• Cycle

• Amplitude

• Wave Length

• Pitch

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The transfer of energy from one vibrating source to another is known as:

• Rarefaction

• Reinforcement

• Resonance

• Reverberation

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is the maximum of any part of a wave from equilibrium.

• Cycle

• Amplitude
• Wave Length

• Pitch

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Force is transmitted equally and undiminished in every direction through a confined:

If the fluid pressure is 800 PSI in a ½-inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be

• 4,000 pounds

• 8,000 pounds

• 2,000 pounds

• 800 pounds

Answer explanation

F=P×A

F = P \times A

where:

• F is the force exerted by the fluid (in pounds-force, lbf),

• P is the fluid pressure (in psi),

• A is the piston area (in square inches).

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The term “pitch” is used to describe a sound’s:

• Intensity

• Loudness

• Frequency

• Amplitude

Which of the following is NOT a method of heat transfer?

• Convection

• Conduction

• Friction

• Radiation

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