Materials with ______________ are typically used in aircraft construction.

a) no strain

b) lower strength/weight ratio

c) average strength/weight ratio

d) higher strength/weight ratio

2. Which of the following is not a property of aluminium that makes it ideal to use as an aircraft material?

a) Resistance to corrosion

b) Light in weight

c) High fuel consumption

d) High strength alloy

3. Using materials with good joining properties is an advantage.

a) True

b) False

4. Which of the following methods would be helpful if a material that is not resistant to corrosion is used?

a) Painting a protective layer

b) Heating to 10F

c) Increase the quantity of material

d) Disjoining

5. Why is low thermal conductivity important for aircraft systems?

a) To increase the strength of the material

b) To protect from excessive heating

c) To keep aircraft warm for passengers

d) For oxygen

6. What is fatigue strength?

a) Strength/weight ratio

b) Elasticity

c) Resistance to cyclical stress

d) Strain energy

7. Landing gear wheels are made of rubber to absorb shock.

a) True

b) False

8. What does a good working property of material mean?

a) To have high strength

b) To be able to bend or machine the material in the desired shape

c) To have a corrosive nature

d) To ability to join the material in the desired shape

9. Which of the following is a mechanical property of materials?

a) Color

b) Appearance

c) Reliability

d) Elasticity

10. An aircraft material should be resistant to ______________

a) join

b) work

c) shock loads

d) strength