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Aircraft Material & Hardware (SBQ-Unit1)

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

The critical temperature of Steel is:

a)

724 °F

b)

724 °C

c)

1800 °C

d)

1800 °F

2.

The result of annealing process is:

a)

Reduces Hardness & Increases Ductility

b)

Reduce toughness

c)

Increase the percentage of Nitrogen film

d)

Cutting the steel part in uniform shapes

3.

Case Hardening is done only for the:

a)

Low carbon steel that has less than 0.30% carbon

b)

Nickel-Chromium Steel

c)

Medium carbon steel

d)

Low carbon steel that has more than 0.30% carbon

4.

The type of steel that contains a carbon percentage between 0.83-1.50% is:

a)

Low carbon steel

b)

Mild steel

c)

Medium carbon steel

d)

High carbon steel

5.

Steel has 3 basic classifications

a)

False

b)

True

6.

The ability to withstand scratching (abrasion) or indentation by another body, is a definition of:

a)

Hardness

b)

Eutectic Point

c)

Ductility

d)

Creep

7.

Spongy or Spring are good example for one of the mechanical properties:

a)

Palsticity

b)

Elasticity

c)

Malleability

d)

Hardness

8.

Aluminum has a:

a)

Red color

b)

Tin white color

c)

Purple color

d)

Black color

9.

One of the following metals used mainly in Bearing materials:

a)

Antimony

b)

Aluminum

c)

Copper

d)

Lead

10.

The type of spark that produced during Sparking test for a piece of Aluminum is:

a)

Long Spark

b)

Short Spark

c)

No Spark

d)

Fire hazard will occur

11.

Casting Aluminum alloys are used where no further working operations are required.

a)

True

b)

False

12.

One example on Non-metals is:

a)

Graphite

b)

Fiberglass

c)

Steel

d)

Stainless Steel

13.

Mild steel is another name of:

a)

High Carbon Steel

b)

Medium Carbon Steel

c)

Low Carbon Steel

d)

Stainless Steel

14.

The rapid quenching (cooling) medium is:

a)

Calcium Chloride

b)

Water

c)

Oil

d)

San

15.

Tempering is a type of heat treatment, which is a steel is heated above Critical Temperature.

a)

True

b)

False