M6 Part 4

1. If two dissimilar materials mate, which one will corrode first?

Anodic

Strongest material

Hardest material

2. Landing gears wheels use what bearing?

Roller bearing

Ball bearing

Tapered roller bearing

3. A split pin

Used twice only

Use once

Can be re-used if it is serviceable

4. What type of corrosion will have on aircraft aluminum structure if there is a spilling of battery acid

Direct chemical attack

Intergranular corrosion

Fretting

5. Advanced composite structure repair required curing of resin by

Heat only

Pressure only

Heat and pressure

6. Which of the bearing will give you the largest contact surface area on a shaft with the same diameter?

Thrust bearing

Roller bearing

Plain bearing

7. The fuel metering in a fuel control unit uses what spring?

Compression spring

Tension spring

Leaf spring

8. A locking plate

Can be reuse if serviceable

Must be discard after used

Can be used not more than two time

9. Which material will give high strength, low weight and ductility when alloyed?

Copper

Magnesium

Aluminum

10. The main load curried by a rivet is,

Shear

Tensile

Compressive

11. 18-8 stainless steel contain

18% carbon and 8% chromium

18% titanium and 8% vanadium

18% chromium and 8% nickel

12. A test involving a pendulum hitting a notched material,

Hardness test

Impact test

Tension test

13. Aircraft engine fuel metering unit uses:

Tension spring

Compression spring

Torsion spring

14. Which on of the following reduction gear ration will give the maximum RPM of propeller?

3:2

16:7

20:7

15. Almost all blind rivets installation is by

Pulling of mandrel through the hole until the shear force is reach

Using rivet gun and buck head

Using dolly

16. If a composite damage does not go through the fiber of a fiberglass component,

Minor damage that must be repaired

Cosmetic damage and not mandatory to repair

Major damage

17. Undamaged composite material will give a ______ sound when tap check is done

Hollow thud

Hollow vibration

Solid ringing

18. Which one of the following materials has the highest tensile strength?

Glass fibre

Aramid

Carbon fibre

19. The hole drilled through the center of the turnbuckle is,

To ensure terminals are safely engaged

For use of locking clips and lockwire

To ensure correct alignment of terminal

20. When considering an engine value spring, other than a smooth surface finish, what properties does the spring require?

Torsion strength

Compression strength

Fatigue strength