Mechanical ENG (PBa)

Mechanical engineers use their knowledge of materials, material properties, mathematics and physics to design and maintain ______ systems.

• mechanical

• electrical

• biological

• chemical

A mechanical system is a system that uses ______ (from a source) to perform a specific task.

• power

• water

• light

• sound

What is an example of an early mechanical system mentioned in the passage?

• Steam engine

• Water wheel

• Electric motor

• Wind turbine

The millstones in a flour mill grind grain into flour that is used to bake bread.

• True

• False

Refer to the diagram of the water mill. What is the main power source used to turn the water wheel?

• Wind

• Flowing water

• Steam

• Solar energy

Refer to the passage: There are many types of mechanical systems that make up different machines which have vastly improved the lives of people and industries. Which of the following is NOT mentioned as an example of a mechanical system in the passage?

• Water mills

• Jet propulsion

• Kinetic energy recovery mechanisms

• Electric cars

Fill in the blank: Mechanical engineers are always looking to innovate new _______ systems for the improvement of society. (Refer to the passage)

• mechanical

• electrical

• chemical

• biological

According to the passage, what is one way mechanical systems have impacted society?

• They have vastly improved the lives of people and industries.

• They have made communication impossible.

• They have eliminated the need for transportation.

• They have caused all industries to shut down.

According to the passage, a couple of hundred years ago, how did most people travel long distances?

• Most people relied on horses and carts or walking.

• Most people used airplanes for travel.

• Most people traveled by high-speed trains.

• Most people used cars and buses.

According to the passage, what is the average distance a person can travel in a year today due to automobiles?

• 12000 miles

• 5000 miles

• 25000 miles

• 8000 miles