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Materials and Processes 1.0 > Module Self Assessment > Flashcards

Module Self Assessment Flashcards

1
Q

The bond that is formed between a metal and a non metal where the metal donates one or more electrons to the non metal and causes the formation of two opposing ions is referred to as a
A) Covalent bond.
B) Ionic Bond
C) Metallic Bond
D) James Bond

A

B) Ionic Bond

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2
Q

What type of solid does not form a true lattice structure?
A) Crystalline
B) Dendritic
C) Amorphous
D) Allotropic

A

C) Amorphous

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3
Q

Which type of bond is based on the electromagnetic interaction between delocalized electrons and positive ions?
A) Covalent Bond
B) Ionic Bond
C) Metallic Bond
D) Iconic Bond

A

C) Metallic Bond

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4
Q

The state at which matters exist as a solid, a liquid and a gas is referred to as the:
A) Equilibrium point
B) Critical point
C) Sublimation point
D Triple Point

A

D) Triple Point.

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5
Q

What name is given to an ionized gas that contains positive and negative ions that are derived from various origins, such as heat, electricity or electromagnetic energy?
A) Plasma
B) Inert
C) Argon
D) Isotope

A

A) Plasma

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6
Q

Which non Destructive Testing Method would employ the use of such items as; Vernier calipers,micrometers, mirrors and pit-gauges
a) MPI
b) VT
c) Acoustic emission testing
d) Dye testing

A

B) Visual Testing

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7
Q

Which form of testing incorporates the use of alternating circular electrical currents to detect surface discontinuities or measure coating thicknesses on thin material?
A) Magnetic current testing.
B) Radiographic testing.
C) EMF testing
D) Eddy current Testing

A

D) Eddy current Testing

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8
Q

Each of the following are reasons that NDT is performed on manufactured and in-service articles except:
A) To verify proper assembly of complex components.
B) To locate discontinuities that can affect the life of the article.
C) To maintain certification of testing personnel as required by code.
D) To screen or sort incoming materials

A

C) To maintain certification of testing personnel as required by code

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9
Q

In a “stable” or a “neutral” atom, the number of protons in the nucleus is:

a) Greater than the number of electrons in orbit around the atom.
b) Less than the number of electrons in orbit around the atom.
c) The same as the number of electrons in orbit around the atom.
d) Dependant on the number of neutrons outside the atom

A

c) The same as the number of electrons in orbit around the atom

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10
Q

Solids such as glass and pitch (resin and bitumen) that do not take on a crystallization form are referred to to as:

a) Amorphous
b) Crystalline
c) Cementite
d) Martensitic

A

a) Amorphous

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11
Q

Stainless steels are available in wrought and cast form. These types of materials most often contain
a) No less than 25% iron
b) No less than 30% iron
c) No less than 50% iron
d) No less than 55% iron

A

c) No less than 50% iron

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12
Q

What name is given to a material that contains a high purity of iron and some slag?
a) Wrought Iron
b) Cast iron
c) Malleable cast iron
d) Iron ore

A

a) Wrought Iron

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13
Q

Which of the following would most likely NOT be a reason that non ferrous materials would be used over ferrous materials?
a) Corrosion resistance
b) Increased strength
c) Appearance
d) Cost and availability

A

d) Cost and availability

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14
Q

All of the following are non ferrous metals except:
a) Magnesium
b) Nickel-chromium
c) Lead
d) Martensitic stainless steel

A

d) Martensitic stainless steel

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15
Q

All of the following materials are considered ferromagnetic, except:
a) Cast iron
b) Low carbon steel
c) Ferritic stainless steel
d) Aluminum

A

d) Aluminum

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16
Q

Which material contains greater than 3% carbon and some impurities, and is not useful for the manufacture of tools because it’s too brittle?
a) Wrought Iron
b) Pig Iron
c) Carbon steel
d) Cast Iron

A

b) Pig Iron

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17
Q

What term is given to a material or substance that contains two or more elements, where at least one of the elements is a metal?
a) Alloy
b) Compound
c) Solution
d) Isotope

A

a) Alloy

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18
Q

Each of the following would be considered reasons for using metals over composites or plastics, except:
a) Increased strength
b) Increased hardness
c) Higher impact resistance
d) Cheaper to buy

A

d) Cheaper to buy

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19
Q

This type of plastic undergoes a chemical change when heated that prevents it from having the ability to be reheated and re-molded.
a) Thermosetting
b) Thermoplastics
c) Polystyrene
d) Polyethylene

A

a) Thermosetting

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20
Q

What type of lattice structure is shown to the right (6×6)
a) Amorphous
b) Body centered cubic
c) Hexagonal Closed Packed Lattice
d) Face Centered Cubic lattice

A

b) Body centered cubic

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21
Q

What type of lattice structure is shown to the right (6x4)
a) Body Centered Cubic lattice
b) Hexagonal Closed Packed
c) Tetragonal Closed Packed lattice
D) Face Centered Cubic lattice

A

b) Hexagonal Closed Packed

22
Q

Which of the following can have a negative influence on some Non Destructive test?
a) Grain size
b) Grain orientation
c) Grain boundary composition
d) Any of the above

A

d) Any of the above

23
Q

What is the term used for a solid that can exist in more than one Crystalline form, depending on its temperature?
a) Allotropic
b) Amorphous
c) Cementite
d) Tuyeres

A

a) Allotropic

24
Q

What is a phase?

A

a) A form of material that possesses a single charateristic structure and associated characteristic properties.

25
Q

What name is given to iron when it’s temperature is raised just below its melting point?
a) Alpha iron
b) Beta iron
c) Gamma iron
d) Delta iron

A

d) Delta iron

26
Q

What is another name given to iron carbide?
a) Martinsite
b) Pearlized
c) Cementite
d) Austenite

A

c) Cementite

27
Q

What term describes a solid solution in which two or more atoms fill regular atom sites on a single lattice?
a) Interstitial
b) Substitutional
c) Polymorphic
d) Allotropic

A

b) Substitutional

28
Q

Which hard, needle-like grain structure is formed due to rapid cooling?
a) Martinsite
b) Pearlite
c) Cementite
d) Austenite

A

a) Martinsite

29
Q

A typical Alloy in steel is carbon. What diagram describes the Metallic structure and the given amount of carbon present in steel at certain temperatures?
a) the triple point diagram
b) The solid solution diagram
c) The iron carbide diagram
d) The cast iron diagram

A

c) The iron carbide diagram

30
Q

What is the name given to the material (the flux) that helps remove impurities in the blast furnace?
a) Brimstone
b) Sandstone
c) Oxygen
d) Limestone

A

d) Limestone

31
Q

The process of reducing iron ore to pig iron is:
a) Smelting
b) Blasting
c) Refining
d) Alloying

A

a) Smelting

32
Q

Why is the “Hot top” of an ingot removed in the steel making process?
a) To facilitate am even cooling rate in the ingot.
b) To obtain a bloom or billet of the desired length.
c) To remove many of the discontinuities.
d) To supply liquid metal to compensate for shrinkage.

A

c) To remove many of the discontinuities

33
Q

Which one of the following would be considered to be the the most common furnace used in steel making today?
a) Crucible furnace
b) Open hearth furnace
c) Open electric furnace
d) Electric arc furnace

A

d) Electric arc furnace

34
Q

What is the term given to the method for the removal of impurities “trapped” in the hot top of a solidified ingot?
a) Chopping
b) Topping
c) Cropping
d) Lopping

A

c) Cropping

35
Q

A primary shape produced by the continuous casting process that’s approximately square in cross-section, and whose cross sectional area is usually (NOT) less than 36 square inches is referred to as:
a) A bloom
b) A billet
c) An ingot
d) A slab

A

a) A bloom

36
Q

Which of the following is considered a non useable, undesired product of the steel making process?
a) Coke
b) Iron ore
c) Slag
d) Limestone

A

c) Slag

37
Q

What type of steel is fully de-oxidized in the steel making process?
a) Killed
b) Semi-killed
c) Rimmed
d) Capped

A

b) Semi-killed

38
Q

A primary shape produced by the continuous casting process that’s approximately square in cross-section, and whose cross-sectional area is usually less than 36” is referred to as:
a) A bloom
b) A billet
c) An ingot
d) A slab

A

b) A billet

39
Q

What type of casting uses an expandable mold that consist of of a mixture of silica sand, bentonite clay and some water
a) Dry sand casting
b) Green sand casting
c) Shell mold casting
d) lost wax casting

A

b) Green sand casting

40
Q

What name is given to the bottom part of the mold flask in the casting process?
a) Cope
b) Drag
c) Gate
d) Chill

A

b) Drag

41
Q

Non-metallic or foreign materials trapped in the solidified metal of a casting are often referred to as:
a) Porosity
b) Laminations
c) Inclusions
d) Cold shots

A

c) Inclusions

42
Q

Which of the casting processes listed below uses “expendable” molds?
a) Die casting
b) Injection mold casting
c) Investment casting
d) Centrifugal casting

A

c) Investment casting

43
Q

What is the name of the metal inserts that are placed inside the mold to aid in uniform cooling between thick and thin sections of the finished casting?
a) Chills
b) Chaplets
c) Cores
d) Risers

A

a) Chills

44
Q

A discontinuity caused by gas that is released during solidification, or by the evaporation of moisture or volatile material from the surface, is indicative of:
a) Microshrinkage
b) Shrinkage cavity
c) Inclusion
d) Gas porosity

A

d) Gas porosity

45
Q

In the casting mold, what does the runner connect?
a) The pouring basin to the sprue.
b) The downgate to the riser
c) The sprue the ingate
d) The pouring basin to the mold cavity

A

c) The sprue the ingate

46
Q

The main difference between permanent mold casting and die casting is:

A

a) In permanent mold casting, molten metal enters the mold by gravity or under a low pressure vacuum or gas, while in die casting, the molten metal only enters the mold under pressure.

47
Q

Which of the following acts as a reservoir of molten metal that is provided to compensate for the internal contraction of the casting as it solidifies, while also providing the necessary venting of gas or air?
a) Riser
b) Pouring cup
c) Runner
d) Sprue

A

a) Riser

48
Q

Which of the following statements could be considered a common characteristic of both sand casting and invest casting?

a) Both may be used to produce small castings
b) Both produce castings of great dimensional accuracy
c) Both make use of wooden patterns
d) Both make use of reusable molds

A

a) Both may be used to produce small castings

49
Q

Name the particles in an atom?

A

Proton, electron, neutron

50
Q

What information can you get from the atomic number of an element?

A

Number of protons and number of electrons

Materials and Processes 1.0 (1 decks)

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