UNIT 4 QUIZ A

In which direction does the exhaust flow from a jet engine?

• Opposite the direction of motion

• In the direction of motion

• Toward the ground

• Toward the sky

What need encouraged the development of jet engines?

• To break the sound barrier

• To allow for covert surveillance

• To go faster and farther than before

• To make aircraft smaller and lighter weight

Which country first used a jet fighter during World War II?

• France

• Germany

• Japan

• United States

What is an example of a societal change brought about by the development of jet aircraft? Select all that apply.

• People from around the world are more easily connected

• Commercial air travel is faster and more accessible

• Wars are no longer fought on the ground

• People speak more languages

• Fewer people purchased cars and trucks

A benefit of airliners using jet engines was

• Fewer pilots were needed to fly the aircraft.

• The aircraft were much more fuel efficient.

• They allowed the efficient transport of troops during World War II.

• They were able to fly above the weather, offering more comfort to passengers.

Dr. Hans Van Ohein and Frank Whittle are credited as the _______.

• first commercial airline pilots

• founders of powered flight airmail services

• co-inventors of the jet engine

• co-inventors of the interrupter

True or False. Swept wings allowed shock waves to impact the aircraft immediately, allowing the aircraft to take advantage of the performance jet engines offered.

• True

• False

Which of these is true regarding the exhaust of a jet engine?

• The velocity of the air is equal and opposite the velocity of the airplane.

• The acceleration of the air is equal and opposite the acceleration of the airplane.

• The force exerted on the air is equal and opposite the force exerted on the airplane.

• The drag experienced by the air is equal and opposite the drag experienced by the airplane.

Inside which component of the engine does a contained explosion occur?

• Turbine

• Exhaust

• Combuster

• Compressor