Block 2 Final review

Question 1

Before applying any chemical surface treatment on bare metal, perform a water break test. This test will

Accepted Answer

Make certain that the metal is completely clean

Question 2

Generally speaking, bolt grip lengths should be

Accepted Answer

equal to the thickness of the material which is fastened together.

Question 3

A detail drawing has enough information to allow a part to be manufactured

Accepted Answer

True

Question 4

When the specific torque value for nuts is not given, where can the recommended torque value be found?

Accepted Answer

AC 43.13-1B.

Question 5

Normalizing is a process of heat treating ferrous based metals only

Accepted Answer

True

Question 6

Alclad is a metal consisting of:

Accepted Answer

pure aluminum surface layers on an aluminum alloy core.

Question 7

Sketches can be made easier using

Accepted Answer

graph paper.

Question 8

castle tension nut cotter pin hole does not align within the recommended torque range, the acceptable practice is to:

Accepted Answer

change washers and try again.

Question 9

Select a characteristic of a good gas weld.

Accepted Answer

The weld should taper off smoothly into the base metal.

Question 10

Which of the listed conditions is NOT one of the requirements for corrosion to occur?

Accepted Answer

The presence of a passive oxide film.

Question 11

What is descriptive of the annealing process for steel during and after it has been annealed?

Accepted Answer

Slow cooling; low strength.

Question 12

A hydraulic system schematic drawing typically indicates the:

Accepted Answer

direction of fluid flow through the system.

Question 13

Which material section-line symbol indicates cast iron

Accepted Answer

3

Question 14

Select the solvent recommended for wipe-down of cleaned surfaces just before painting.

Accepted Answer

Aliphatic naphtha.

Question 15

Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to:

Accepted Answer

clean, dry threads.

Question 16

An assembly drawing has enough detail to allow a part to be manufactured

Accepted Answer

False

Question 17

The drawings often used in illustrated parts manuals are:

Accepted Answer

exploded view drawings.

Question 18

A bolt with a single raised dash on the head is classified as an

Accepted Answer

AN corrosion-resistant steel bolt.

Question 19

Why is it considered good practice to normalize a part after welding?

Accepted Answer

To relieve internal stresses developed within the base metal.

Question 20

1,2,and 3, view drawings are a common form for what?

Accepted Answer

Orthographic projection

Question 21

Orthographic projection can show as many as 6 views

Accepted Answer

True

Question 22

For which of the following reasons would a water break test be conducted?

Accepted Answer

To make certain that a bare metal surface is thoroughly clean.

Question 23

The reheating of a heat treated metal, such as with a welding torch:

Accepted Answer

Can significantly alter a metal's properties in the reheated area.

Question 24

In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes.

Accepted Answer

False

Question 25

Corrosion should be removed from magnesium parts with a:

Accepted Answer

stiff, nonmetallic brush.

Question 26

In what type of electrical diagram are images of components used instead of conventional electrical symbols?

Accepted Answer

A pictorial diagram.

Question 27

non-approved commercial cleaning compounds can cause chemical reactions to aircraft structures,This might cause?

Accepted Answer

Hydrogen embrittlement of the part

Question 28

what is the best way to start cleaning an aircraft window

Accepted Answer

Flush the surface with clean water.

Question 29

Select the solvent used to clean acrylics and rubber

Accepted Answer

Aliphatic naphtha.

Question 30

Engine parts made from magnesium and its alloys are cleaned by

Accepted Answer

proper commercial cleaner, decarborizer, and grit blasting hard deposits

Question 31

Spilled mercury on aluminum causes rapid and severe corrosion that is very difficult to control.

Accepted Answer

True

Question 32

In Galvanic or Electro-Chemical Series for metals, the most anodic metals are ones that give up electrons easily

Accepted Answer

True

Question 33

What is generally used in the construction of aircraft engine firewalls?

Accepted Answer

Titanium.

Question 34

which image is correct

Accepted Answer

3

Question 35

What may be used to remove corrosion from highly stressed steel surfaces?

Accepted Answer

Fine-grit aluminum oxide.

Question 36

Hidden lines are described how?

Accepted Answer

Dashed line, of medium weight

Question 37

What material symbol is frequently used in drawings to represent all metals?

Accepted Answer

Cast iron.

Question 38

When reading a blueprint, a dimension is given as 5.327 inches +.007 -.003. Which statement is true?

Accepted Answer

The minimum acceptable size is 5.324 inches., The maximum acceptable size is 5.334 inches

Question 39

Wiring diagrams indicate the size of wires?

Accepted Answer

True

Question 40

Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft?

Accepted Answer

Atomizing spray equipment, Cotton fiber wiping cloths when using a flammable agent.

Question 41

Which material cannot be heat treated repeatedly without harmful effects?

Accepted Answer

Clad aluminum alloy.

Question 42

Fayed surfaces cause concern in chemical cleaning because of the danger of:

Accepted Answer

entrapping corrosive materials.

Question 43

A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called:

Accepted Answer

an installation drawing.

Question 44

In the four-digit aluminum index system number 2024, the first digit indicates

Accepted Answer

the major alloying element.

Question 45

Fretting corrosion is most likely to occur:

Accepted Answer

when two surfaces fit tightly together but can move relative to one another

Question 46

lifting or flaking of the metal at the surface due to the delamination of grain boundarie

Accepted Answer

exfoliation

Question 47

Which of the following are acceptable to use in cleaning anodized surfaces?

Accepted Answer

Fiber bristle brush., Aluminum wool.

Question 48

Why is steel tempered after being hardened?

Accepted Answer

to reduce brittleness, to soften

Question 49

The rust or corrosion that occurs with most metals is the result of:

Accepted Answer

a tendency for them to return to their natural state.

Question 50

identify center line

Accepted Answer

4

Question 51

Caustic cleaning products used on aluminum structures have the effect of producing:

Accepted Answer

corrosion.

Question 52

What is the max diameter of the hole for the clevis pin?

Accepted Answer

20/64"

Question 53

If steel is heated to its critical temperature and allowed to cool slowly:

Accepted Answer

It will become soft

Question 54

'4130' designating chromium molybdenum steel, the first digit indicates the:

Accepted Answer

basic alloying element.

Question 55

A nonelectrolyte chemical treatment for aluminum alloys to increase corrosion resistance and paint-bonding qualities is

Accepted Answer

alodizing.

Question 56

Damaged anodized coating can be repaired by:

Accepted Answer

Applying a chemical surface treatment

Question 57

Aircraft bolts are usually manufactured with a

Accepted Answer

class 3 fit for the threads.

Question 58

Which of the following describe the effects of annealing?

Accepted Answer

Softening of the metal., Decrease in internal stress.

Question 59

Galvanic corrosion is likely to be most rapid and severe when:

Accepted Answer

surface area of the anodic metal is smaller than the surface area of the ca

Question 60

Aircraft bolts with a cross or asterisk marked on the bolt-head are

Accepted Answer

standard steel bolts.

Question 61

What are case hardening techniques?

Accepted Answer

Carburizing, Nitriding

Question 62

Station numbers are always referenced from

Accepted Answer

Datum

Question 63

How is the locking feature of the fiber-type locknut obtained?

Accepted Answer

By the use of an unthreaded fiber locking insert.

Question 64

What corrosion may attack the grain of aluminum alloys when heat treatment process has been improperly accomplished?

Accepted Answer

Intergranular.

Block 2 Final review

Questions 74

Block 2 Final review

Questions 74