Understanding Motion and Mechanical Systems

What is the primary function of a camshaft in an engine?

• To increase fuel efficiency

• To open and close engine valves

• To cool the engine

• To provide electrical power

Which type of lever is a seesaw an example of?

• 1st order lever

• 2nd order lever

• 3rd order lever

• None of the above

In a block and tackle pulley system, what is the main advantage?

• It increases speed

• It reduces the effort needed to lift a load

• It increases the weight of the load

• It decreases the distance the load is moved

What type of motion does a pendulum exhibit?

• Linear motion

• Rotary motion

• Oscillating motion

• Random motion

Which of the following is an example of linear motion?

• A spinning top

• A car driving down a straight road

• A swinging pendulum

• A rotating fan

What is the primary difference between linear speed and rotary speed?

• Linear speed is measured in revolutions per minute

• Rotary speed is measured in metres per second

• Linear speed refers to straight-line motion, while rotary speed refers to circular motion

• Rotary speed is always faster than linear speed

Which of the following is a characteristic of a 2nd order lever?

• The fulcrum is between the effort and the load

• The load is between the fulcrum and the effort

• The effort is between the fulcrum and the load

• The load and effort are on the same side of the fulcrum

What is the main purpose of a drop cam in machinery?

• To increase the speed of the machine

• To convert rotary motion into linear motion

• To decrease the noise of the machine

• To provide electrical power

Which of the following is an example of a 3rd order lever?

• A pair of scissors

• A wheelbarrow

• A fishing rod

• A crowbar

What is the primary function of a pear cam in a mechanical system?

• To provide constant speed

• To create a variable speed

• To convert electrical energy into mechanical energy

• To maintain a constant force