PS(10/23/24):Detailed Mechanical Systems Principles

Where is effort applied in a mechanical machine gear system?

• On the driven gear

• On the drive gear

• On the hypoid gear

• On the herringbone gear

What is the main function of levers?

• To decrease speed

• To amplify force or distance

• To reduce weight

• To increase friction

In a Class 1 lever, where is the fulcrum located?

• Between the load and effort

• At the end of the lever

• Between the effort and load

• At the load side

Which class of lever is exemplified by a wheelbarrow?

• Class 1

• Class 2

• Class 3

• Class 4

In a Class 3 lever, what is positioned between the fulcrum and load?

• Load

• Fulcrum

• Effort

• Resistance

Which class of lever is best represented by using a dolly to lift a load?

• First-class lever

• Second-class lever

• Third-class lever

• Fourth-class lever

What is the definition of mechanical advantage in a machine?

• Ratio of input force to output force

• Ratio of output force to input force

• Ratio of input distance to output distance

• Ratio of output distance to input distance

How is mechanical advantage (MA) calculated?

• MA = Input Force / Output Force

• MA = Output Distance / Input Distance

• MA = Output Force / Input Force

• MA = Input Distance / Output Distance

Which of the following is an example of a simple machine?

• Motor

• Pulley

• Battery

• Circuit

What affects the efficiency of a pulley system?

• Speed and velocity

• Friction and energy losses

• Temperature and pressure

• Color and size