Mechanical Principles - Multiple Choice Questions

What is the mechanical advantage of a machine?

• The distance moved by the effort

• The force applied by the machine

• The ratio of load to effort

• The speed of the output

Which class of lever has the fulcrum between the effort and load?

• First-class

• Second-class

• Third-class

• None of the above

What does Pascal's Law state?

• Energy is conserved in a closed system

• Force is equal to mass times acceleration

• Pressure applied to a confined fluid is transmitted undiminished

• Heat flows from hot to cold

In a gear system, a larger driver gear turning a smaller driven gear will:

• Increase torque

• Decrease speed

• Increase speed

• Stop the motion

Which type of motion does a cam and follower mechanism produce?

• Linear to rotary

• Rotary to linear

• Oscillating to reciprocating

• None of the above

What is torque?

• A. A type of energy

• B. Force applied in a straight line

• C. A rotational force

• D. The resistance to motion

What simple machine is an inclined plane wrapped around a cylinder?

• Pulley

• Lever

• Screw

• Wedge

What happens to force in a hydraulic system according to Pascal's Law?

• It is reduced

• It increases with height

• It remains the same throughout

• It disappears in smaller pistons

What unit is used to measure pressure?

• Newton

• Pascal

• Joule

• Watt

A wheel and axle is a type of: