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6 Month 5 > TPC 105 Metals In the Plant > Flashcards

TPC 105 Metals In the Plant Flashcards

1
Q

A metals ability to be stretched into wire without breaking is called it’s________. It’s ability to
return to its original shape after being deformed is called its_______

A Ductility; elasticity
B Ductility; malleability
C Malleability; toughness
D Toughness; elasticity

A

A Ductility; elasticity

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2
Q

Which of the following magnetic materials is an alloy?

A Alnico
B Cobalt
C Iron
D Nickel

A

A Alnico

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3
Q

A solid and a liquid can exist together at the _______ Adding heat melts more of the solid ______ changing the temperature

A Latent heat of fusion ; by
B Latent heat of fusion; without
C Melting point ; by
D Melting point ; without

A

D Melting point ; without

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4
Q

An alloy containing iron as the base metal is

A brass
B bronze
C pewter
D steel

A

D steel

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5
Q

Machinability is the speed and ease with which a metal

A can be brazed or welded
B can be cut on a machine tool
C reaches it’s melting point
D regains it’s original shape after deformation

A

B can be cut on a machine tool

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6
Q

The maximum amount of stress a material can exert is called it’s

A Ductility
B Hardness
C Shear force
D Yield strength

A

D Yield Strength

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7
Q

A standard tensile test specimen exerts a resistance force of 8500 lb. What is the stress in the specimen?

A 1700 psi
B 40,000 psi
C 42,500 psi
D 425,000 psi

A

C 42,500 psi

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8
Q

When a metal supports a heavy load at high temperature, It may undergo

A Creep
B Elastic breakdown
C Metal fatigue
D Strain

A

A Creep

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9
Q

The mass of a material per unit volume is called it’s

A Density
B Mass
C Specific gravity
D Volume

A

A Density

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10
Q

The ratio of a material’s density to the density of water is called its

A Density
B Mass
C Specific gravity
D Volume

A

C Specific gravity

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11
Q

Permanent–mold casting uses

A Metal cores only
B Send cores only
C Both metal and sand cores
D No cores

A

C Both metal and sand cores

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12
Q

The method of casting metal parts using a spinning mold to force the molten metal away from the center and against the sides of the mold is called _______ casting.

A centrifugal
B die
C permanent
D sand

A

A centrifugal

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13
Q

Die casting is the ______ of all casting methods. It is used to cast ______ metals.

A fastest ; ferrous
B fastest ; nonferrous
C slowest ; ferrous
D slowest ; nonferrous

A

B fastest ; nonferrous

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14
Q

Upsetting is the most common method of

A Cold forging
B Die casting
C Extrusion
D Heading

A

A Cold forging

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15
Q

Pulling rod stock through a tapered die produces

A cord
B sheets
C tubing
D wire

A

D wire

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16
Q

Because of its higher carbon content, ______ has a lower melting point than_______.

A Cast iron; cementite
B Cast iron; steel
C Steel; cast-iron
D Steel; cementite

A

B Cast iron; steel

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17
Q

Carbon in cast iron generally makes it easier to

A Bend
B Break
C Cast
D Pour

A

B break

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18
Q

Malleable cast iron is ______ than white cast iron and has_______ resistance to wear than gray cast iron

A Harder; less
B Harder; more
C Softer; less
D Softer; more

A

D Softer; more

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19
Q

What kind of cast iron is best for parts that must be hard and strong but not brittle?

A Ferritic
B Gray
C High-alloy
D White

A

C High- alloy

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20
Q

Open-hearth, basic oxygen, and electric are three types of furnaces used for making

A Cast iron
B coke
C pig iron
D steel

A

D steel

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21
Q

The most important element added to iron and making steel is

A Carbon
B Cementite
C Ferrite
D Pearlite

A

A carbon

22
Q

AISI and SAE our number coding systems that specify the _________ of each kind of __________

Chemical composition ; cast iron
Chemical composition ; steel
Price range; cast iron
Price range ; steel

A

Chemical composition; steel 

23
Q

When spark, testing to identify a steel, you should consider spark length________ and___________

Color ; Burst
Color ; temperature
Temperature ; Burst
Temperature ; intensity

A

Color; burst 

24
Q

The cold rolled she steel graded_______ quality has a matte finish that holds paint well.

Commercial
Drawing
Physical
Structural

A

Commercial

25
Q

All stainless steels contain

Carbon
Chromium
Copper
Silicon

A

Chromium

26
Q

Uneven, heating and cooling of metal parts during welding causes

Distortion
incomplete fusion
Inconsistent joints
Week seems

A

Distortion

27
Q

In annealing, a metal should be heated to a temperature above its critical temperature, and then

Cooled slowly
Ground
Hammered
Plunged into cold water

A

Cooled slowly

28
Q

Before welding a broken gear, you should__________ it in order to avoid distortion

Flash freeze
Grind
Preheat
Quench

A

Preheat

29
Q

Steels that are_________ generally have a______ carbon content

cast ; Low
Distorted ; high
Forged ; high
Forged ; low

A

Forged; low

30
Q

High carbon steel’s contain_________ percent carbon

0.10 to 0.25
0.25 to 0.55
0.55 to 1.00
More than 1.00

A

0.55 to 1.00

31
Q

Copper alloys are made harder by

Annealing
Cold working
Dezincification
Heat treatment 

A

Cold- working

32
Q

Copper alloy is that contain lead are relatively________ to _______

Difficult ; cast
Difficult ; machine
Easy ; cast
Easy ; machine

A

Easy machine

33
Q

What copper alloy contains 36% to 50% zinc

Alpha brass
Beta brass
Nickel bronze
Nickel silver

A

Betta brass 

34
Q

Muntz metal is the strongest

Brass
Bronze
Copper alloy
Nickel silver

A

Brass

35
Q

What copper alloy is most widely used for casting

Cupronickel alloy
Nickel silver
ounce metal
Yellow brass

A

Ounce metal

36
Q

The process of rolling, a thin layer of aluminum onto a base metal is called

Anodizing
Cladding
Forging
Sintering

A

Cladding 

37
Q

What causes aluminum to lose its strength during welding

Deformation
Increase temperature
Melting the surface film
Rapid oxidation

A

Increase temperature

38
Q

Intermediate temperature, solders, melt and flow at temperatures of________ to _________ •F

300;500
500;700
700;800
800;900

A

500;700

39
Q

When aluminum is exposed to the air, a layer of _____ forms on the surface

Bauxite
Cryolite
Oxide
Silicon

A

Oxide

40
Q

In the four-digit aluminum designation number 6053, which digit signifies the main alloying element?

6
0
5
3

A

6

41
Q

The two methods of extracting magnesium from brines and ores are___\ and _______

Electrolysis; evaporation
Electrolysis; reduction
Filtration; evaporation
Filtration; reduction

A

Electrolysis; reduction

42
Q

Which magnesium casting alloys have the lowest yield strength at high temperatures?

AZ
EK
EZ
ZE

A

AZ

43
Q

The letter “a” following the designation for a rolled sheet of magnesium stands for

Alloy
Aluminum
Annealed
Arc weldable

A

Annealed

44
Q

Magnesium parts should be gas welded

Only in emergencies
To prevent oxidation
With a welding rod of a different alloy
Without a flux

A

Only in emergencies

45
Q

Typical melting and casting methods cannot be used for ________ it can be arc melted using_____ gas

Magnesium; argon
Magnesium; oxygen
Titanium; argon
Titanium; oxygen

A

Titanium; argon 

46
Q

Lead and tin are alloyed in various proportions to make

Babbitt
Galena
Nichrome
Solder

A

Solder

47
Q

Lead wool can be used to

Form Cold-welded seals
Give special properties to greases
Laminate products
Protect metal against corrosion

A

Form cold-welded seals

48
Q

Which nickel Alloy is commonly used for making the heating elements in toasters? (Invar and monel are trade names of the international nickel company)

Invar
Monel
Nichrome
Nickel silver

A

Nichrome

49
Q

Galvanizing is the process of coating steel with

Lead
Nickel
Tin
Zinc

A

Zinc 

50
Q

Which of the following should you use as a lubricant when machining, zinc

Lard oil
Soap
Tallow
Wax

A

Lard oil

6 Month 5 (8 decks)

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