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MD ELEMENTS 1-5 > ELEMENTS 3 > Flashcards

ELEMENTS 3 Flashcards

1
Q
  1. The ability of substance to exist in more than one lattice form is known as:

A. Allotropy
B. Grain
C. Crystallization
D. Diamagnetic

A

A. Allotropy

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2
Q
  1. Properties which describe the behavior of materials under the association of force are called as:

A. Physical properties
B. Chemical properties
C. Mechanical properties
D. Electrical properties

A

C. Mechanical properties

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3
Q
  1. The amount of energy per unit volume which the material will possess when subjected to the elastic limit stress is called:

A. Bulk modulus
B. Modulus of Resilience
C. Modulus of elasticity
D. Modulus of rigidity

A

B. Modulus of Resilience

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4
Q
  1. _________ means the resistance to penetration

A. Hardness
B. Strength
C. Toughness
D. Stiffness

A

A. Hardness

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5
Q
  1. _____ means the increasing hardness and strength by plastic deformation at temperatures lower than the recrystallization range.

A. Case hardening
B. Strain hardening
C. Nitriding
D. Stiffness

A

B. Strain hardening

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6
Q
  1. The plastic deformation at temperatures above the recrystallization temperature.

A. Hot working
B. Cold working
C. Normalizing
D. Annealing

A

A. Hot working

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7
Q
  1. The plastic deformation at temperatures below the recrystallization temperature.

A. Hot working
B. Normalizing
C. Annealing
D. Cold working

A

D. Cold working

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8
Q
  1. A preliminary evaluation of the elevated temperature properties of materials may be secured by means of a

A. Stress rupture test
B. Creep
C. Impact test
D. Modulus of rupture

A

A. Stress rupture test

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9
Q
  1. The temperature at which this decrease of impact energy occurs is called

A. Recrystallization temperature
B. Transition temperature
C. Rupture temperature
D. Ultimate temperature

A

B. Transition temperature

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10
Q
  1. An intimate mechanical mixture of two or more phases having a definite composition and a definite freezing melting point.

A. Allotropy
B. Peritectic
C. Eutectic
D. Protectic

A

C. Eutectic

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11
Q
  1. What is the approximate gap clearance for new piston rings for steam pumps?

A. 0.003” for each inch diameter of cylinder
B. 0.001” for each inch diameter of cylinder
C. 0.010” each inch diameter of cylinder
D. 0.050” for each inch diameter of cylinder

A

A. 0.003” for each inch diameter of cylinder

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12
Q
  1. The familiar “3/8 – 16” in machine shop means what?

A. 6 pieces, 3/8” long
B. Gear with 16 teeth and a 3/8” arbor hole
C. 3/8” square, 16” lone
D. 3/8” diameter, 16 threads per inch

A

D. 3/8” diameter, 16 threads per inch

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13
Q

13 The work should be held _______ when using a drill press.

A. The hand
B. A vise or clamp
C. A gloved hand
D. Pliers

A

B. A vise or clamp

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14
Q
  1. What is(are) the reason(s) why tapered shanks are used on large drill presses?

A. The drill can be centered more easily
B. The drill can be easily forced out of the sleeve with a drift
C. The shank will not turn when cutting
D. The shank can be reground when worn

A

B. The drill can be easily forced out of the sleeve with a drift

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15
Q

15 Which of the following is not a common drill shank?

A. Straight
B. Fluted
C. Taper
D. Bit

A

B. Fluted

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16
Q
  1. What is the usual cutting angle on a drill for drilling mild steel?

A. 39 deg.
B. 59 deg.
C. 49 deg.
D. 69 deg.

A

B. 59 deg.

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17
Q
  1. When installing a new grinding wheel, always use:

A. Blotting paper gaskets on each side of the wheel
B. Copper gasket on each side of the wheel
C. Only the steel washers provided with the machine
D. None of the above

A

A. Blotting paper gaskets on each side of the wheel

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18
Q
  1. What is the other term for the operation of “truing” a grinding wheel?

A. Centering
B. Sizing
C. Dressing
D. Rounding

A

C. Dressing

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19
Q
  1. What tool is used to check external pipe threads?

A. Plug gage
B. Pitch gage
C. Thread gage
D. Ring gage

A

D. Ring gage

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20
Q
  1. What tool is used to check internal pipe threads?

A. Plug gage
B. Pitch gage
C. Thread gage
D. Ring gage

A

A. Plug gage

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21
Q
  1. The science which deals with the preparation and application of metals and alloys.

A. Manufacturing
B. Metalloids
C. Metallurgy
D. Refractories

A

C. Metallurgy

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22
Q
  1. A combination of minerals which can be profitably mined.

A. Gangue
B. Metal
C. Alloy
D. Ores

A

D. Ores

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23
Q
  1. The mechanical treatment by which the concentration of ores is increased are called.

A. Gravity separation
B. Ore dressing
C. Distillation
D. Sintering

A

B. Ore dressing

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24
Q
  1. Process which involve the reduction of the metal from aqueous solution by replacement or by electrolysis are called

A. Pyrometallurgical processes
B. Electrometallurgical processes
C. Hydrometallurgical processes
D. Amalgamation process

A

C. Hydrometallurgical processes

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25
Q
  1. Non-metallic materials of high melting temperature used in the construction of furnaces, crucibles and so forth are called.

A. Refractories
B. Ceramics
C. Insulators
D. Grate

A

A. Refractories

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26
Q
  1. The flux and gangue when in proper proportions will have a melting temperature considerably lower than that of either one and the resulting combination is called:

A. Lime
B. Residue
C. Slag
D. Refractories

A

C. Slag

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27
Q
  1. An iron-bearing slate or chert in the form of compact siliceous rock.

A. Taconite
B. Hematite
C. Magnetite
D. Limonite

A

A. Taconite

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28
Q
  1. A mechanical mixture of very pure iron and a silicate slag

A. Bronze
B. Brass
C. Cast iron
D. Wrought iron

A

D. Wrought iron

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29
Q
  1. An alloy of iron and carbon in which the carbon content does not exceed 1.7 percent

A. Brass
B. Steel
C. Babbit
D. Bronze

A

B. Steel

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30
Q
  1. The structure formed when transformation occurs at temperature down to the knee of the curve

A. Pearlite
B. Bainite
C. Martinsite
D. Limonite

A

A. Pearlite

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31
Q
  1. Which of the following is used to cut gears?

A. gear cutter
B. Gear center
C. Gear hob
D. Gear threader

A

C. Gear hob

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32
Q
  1. If you use a dry grinding wheel for sharpening tool bits, dip the end of the bit in water frequently to prevent:

A. Burning your fingers
B. Annealing the cutting edge of the bit
C. Hardening of the tip
D. The tip from crystallizing

A

B. Annealing the cutting edge of the bit

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33
Q
  1. A piece of tool steel held against an emery wheel will give off:

A. White sparks with stars on the ends
B. Yellow sparks
C. No sparks
D. Green sparks

A

A. White sparks with stars on the ends

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34
Q
  1. Grinding wheels have a range of soft to hard abrasive materials depending on the use. Most manufacturers letter their wheels from A to Z. Which of the following
    mark represents the hardest?

A. E
B. Z
C. A
D. E 1

A

B. Z

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35
Q
  1. What is the main difference between a planer and a shaper?

A. The planer has an offset table and the shaper has a horizontal table
B. The shaper has a rotting table and the planer has a horizontal table
C. The table of a planer has a reciprocating motion past the tool head while the table of the shaper is stationary and the tool head has a reciprocating motion
D. One is larger than the other

A

C. The table of a planer has a reciprocating motion past the tool head while the table of the shaper is stationary and the tool head has a reciprocating motion

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36
Q
  1. One of the factors involved in the choice of a grinding wheel is:

A. The kind of material to be ground
B. The amount of stock to be removed
C. The kind of finish required
D. All of these

A

D. All of these

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37
Q
  1. The “tang” of a file is the part that:

A. Does the cutting
B. Has no teeth
C. Fits into the handle
D. Is opposite the handle

A

C. Fits into the handle

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38
Q
  1. In general, files are divided into two classes called:

A. Single-cut and double-cut
B. Rough and smooth
C. Fine and coarse
D. Heel and sizes

A

A. Single-cut and double-cut

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39
Q
  1. The length of a file is measured from:

A. End to end
B. Point to end
C. Point to heel
D. Heel to end

A

C. Point to heel

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40
Q
  1. The process producing a hard surface in a steel having a sufficiently high carbon content to respond to hardening by rapid cooling of the surface.

A. Flame hardening
B. Induction hardening
C. Cyaniding
D. Carburizing

A

A. Flame hardening

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41
Q
  1. It is one in which some elements other than carbon has been added to improve change the physical properties.

A. Low carbon steel
B. Alloy steel
C. Medium carbon steel
D. High carbon steel

A

B. Alloy steel

42
Q
  1. SAE 1020 steel is a carbon steel containing _______ percent carbon.

A. 20%
B. 0.20%
C. 10%
D. 0.10%

A

B. 0.20%

43
Q
  1. SAE 2317 steel is a nickel steel alloy containing ____ percent nickel.

A. 2%
B. 3%
C. 1%
D. 7%

A

B. 3%

44
Q
  1. AISI C1095 designates that it is a basic open hearth carbon steel having ____ percent carbon.

A. 5%
B. 9%
C. 95%
D. 0.95%

A

D. 0.95%

45
Q
  1. Molybdenum steels are painted ________.

A. Green
B. Blue
C. Red
D. Orange

A

A. Green

46
Q
  1. Used for members of intricate shape that would be difficult to manufacture by other methods.

A. Forging
B. Casting
C. Extruding
D. Hot working

A

B. Casting

47
Q
  1. AISI means:

A. American Iron and Steel Institute
B. African Iron and Steel Institute
C. Aluminum Iron and Steel Institute
D. American Investment for Steel Industry

A

A. American Iron and Steel Institute

48
Q
  1. SAE means:

A. Society of American Engineers
B. Society of Automotive Engineers
C. Society of Australian Engineers
D. Society of African Engineers

A

B. Society of Automotive Engineers

49
Q
  1. Which of the following metals increases the strength without sacrificing the ductility of the carbon steels?

A. Brass
B. Nickel
C. Bronze
D. Copper

A

B. Nickel

50
Q
  1. Which of the following where “pillar” files are used?

A. Filling slots
B. Filling against a shoulder
C. Filling keyways
D. Any of these

A

D. Any of these

51
Q
  1. Which of the following will usually happen to the blade of flexible hacksaw applied by too much pressure?

A. Snap easily
B. Buckle or run out of line
C. Cut too fast
D. Cut on a slant

A

B. Buckle or run out of line

52
Q
  1. Which of the following best defines soldering?

A. It is holding two metals together by heating
B. It is joining two metals by third soft metal that is applied in a molten state
C. It is holding two different kinds of metals together by heating
D. It is joining two metals together by heating

A

B. It is joining two metals by third soft metal that is applied in a molten state

53
Q
  1. What is the use of flux in soldering?

A. Keep the solder from running off the metal
B. Keep the metal from getting too hot
C. Keep the tip of the soldering iron clean
D. Remove and prevent oxidation of the metals

A

D. Remove and prevent oxidation of the metals

54
Q
  1. A surface should be prepared for soldering by:

A. Filling the surfaces
B. Acid-cleaning the surface
C. Scraping the surfaces
D. Any of these

A

D. Any of these

55
Q
  1. What is(are) the hand tool(s) used for cutting threads on round stock?

A. Stock and die
B. Stock
C. Die wrench
D. Stock cutter

A

A. Stock and die

56
Q
  1. A tapered piece of stock is 2” long, 1-1/8” diameter at one end and ¾” diameter at the other end. The taper per foot is:

A. 2”
B. 2 – ¼”
C. 2 – ½”
D. 2 – 1/16”

A

B. 2 – ¼”

57
Q
  1. Which of the following best defines sweating?

A. Soldering two different kinds of metal together
B. Separating two pieces two pieces of metal that have been soldered together
C. Thinning two surfaces, applying flux between them, holding the two together and heating
D. None of the above

A

C. Thinning two surfaces, applying flux between them, holding the two together and heating

58
Q
  1. If muriatic acid is used as a flux, the soldered area must be cleaned thoroughly afterwards to prevent:

A. Anyone touching it from getting burned
B. Remaining acid from eating the metal
C. The acid from evaporating and the solder disintegrating
D. None of these

A

B. Remaining acid from eating the metal

59
Q
  1. Solder will not unite with a metal; surface that has:

A. Grease on it
B. Oxidation on it
C. Dirt on it
D. Any of these

A

D. Any of these

60
Q
  1. Prepared soldered paste flux is most popular but if you did not have any, you could use:

A. Hydrochloric acid
B. Nitric acid
C. Sulphuric acid
D. Any of these

A

A. Hydrochloric acid

61
Q
  1. It serves as an excellent deoxidizing agent and promotes the nitriding of steels

A. Aluminum
B. Boron
C. Copper
D. Brass

A

A. Aluminum

62
Q
  1. It is used to toughen and strengthen the steel, to reduce the grain size and to act as a cleanser and degasifier.

A. Nickel
B. Boron
C. Vanadium
D. Molybdenum

A

C. Vanadium

63
Q
  1. Materials having a high percentage of alumina or steatite are known as

A. Titanium
B. Vanadium
C. Refractories
D. Ceramics

A

D. Ceramics

64
Q
  1. It is a process of hardening the outer portion of the metal by prolonged heating free from contact with air while the metal is packed in carbon in the form of bone
    char, leather scraps, or charcoal.

A. Carburizing
B. Cyaniding
C. Nitriding
D. Aging

A

A. Carburizing

65
Q
  1. The degree to which a material will deform before ultimate fracture.

A. Brittleness
B. Ductility
C. Malleability
D. Plasticity

A

B. Ductility

66
Q
  1. The property of a material that indicates its ability to transfer heat.

A. Thermal conductivity
B. Electrical resistivity
C. Thermal expansion
D. Electrical conductivity

A

A. Thermal conductivity

67
Q
  1. A group of heat treatable cast iron moderate to high strength, high modulus of elasticity, goal machinery and good resistance carbon.

A. Gray iron
B. Malleable iron
C. Ductile
D. White iron

A

B. Malleable iron

68
Q
  1. Steels may be carburized and nitrided simultaneously by the process known as:

A. Nitrding
B. Carburizing
C. Carbonitriding
D. Cyaniding

A

C. Carbonitriding

69
Q
  1. It is used in steels as an alloying element to combine hardness obtained.

A. Vanadium
B. Chromium
C. Titanium
D. Molybdenum

A

B. Chromium

70
Q
  1. The art of making definite impressions in sand by means of a pattern for the purpose of producing a casting

A. Molding
B. Pattern
C. Extrusion
D. Die casting

A

A. Molding

71
Q
  1. Hard solder is made of which of the following?

A. Copper and zinc
B. Tin and copper
C. Tin and zinc
D. Tin and lead

A

A. Copper and zinc

72
Q
  1. Which of the following is the flux usually used for hard solder?

A. Rosin
B. Barium
C. Borax
D. Alum

A

C. Borax

73
Q
  1. In which of the following where straight muriatic acid is often used as a flux?

A. Galvanized iron
B. Sheet metal
C. Cast iron
D. Any of these

A

D. Any of these

74
Q
  1. For aluminum, special solders are being used and will usually require which of the following?

A. More heat
B. The same heat as copper wire
C. Less heat
D. The same heat as sheet metal

A

A. More heat

75
Q
  1. Copper is annealed by heating to a cherry red color and ______.

A. Dousing in cold water
B. Dousing in oil
C. Cooling slowly in air
D. Dousing in hot water

A

C. Cooling slowly in air

76
Q
  1. Soft solder is made of which of the following?

A. Copper and zinc
B. Tin and copper
C. Tin and lead
D. Tin and zinc

A

C. Tin and lead

77
Q
  1. A piece of mild steel held against an emery wheel will give off _____.

A. Bright shiny sparks
B. No sparks
C. Light straw-colored sparks
D. Green sparks

A

C. Light straw-colored sparks

78
Q
  1. A gear wheel making 156 RPM has 56 teeth. It drives another gear at 91 RPM. The number of teeth on the second gear is:

A. 65
B. 50
C. 90
D. 96

A

D. 96

79
Q
  1. Tool steel can be hardened by which of the following?

A. Heating red hot and plunging into water
B. Heating red hot and cooling in a blast of dry air
C. Heating red hot and plunging into linseed or cottonseed oil
D. Any of these, depending on type and use

A

D. Any of these, depending on type and use

80
Q
  1. At what temperature where soft solder approximately melts?

A. 250 deg.
B. 450 deg.
C. 350 deg.
D. 550 deg.

A

C. 350 deg.

81
Q
  1. Products that have cross sections of less than 6 inches and that are not in the finished forms

A. Slabs
B. Gangue
C. Blooms
D. Billets

A

D. Billets

82
Q
  1. It is the process of forging by which the metal in the plastic state is made to flow within a die by the application of plunger pressure.

A. Extrusion forging
B. Smith forging
C. Drop forging
D. Press forging

A

A. Extrusion forging

83
Q
  1. It is a squeezing process used to finish sheet or bar stock for special purpose

A. Cold forging
B. Sizing
C. Cold rolling
D. Coining

A

C. Cold rolling

84
Q
  1. The term used for most press operations.

A. Glazing
B. Stamping
C. Coning
D. Swaging

A

B. Stamping

85
Q
  1. It is a process of shearing in which sheet or plate is cut out to a definite outline in a press.

A. Blanking
B. Stamping
C. Spinning
D. Trimming

A

A. Blanking

86
Q
  1. It is a special case of drawing in which the work is rotated and formed by means of a tool

A. Spinning
B. Embossing
C. Bulging
D. Stretching – forming

A

A. Spinning

87
Q
  1. It’s a squeezing operation used for flattening or surfacing various parts where a very small amount of flow of the material is involved.

A. Hobbing
B. Stamping
C. Coining
D. Sizing

A

D. Sizing

88
Q
  1. It is a process by which a hot plastic metal is made to flow into dies by the application of sudden blows to the material.

A. Drop forging
B. Press forging
C. Extrusion
D. Machine forging

A

A. Drop forging

89
Q
  1. It is a measure of stiffness.

A. Modulus of rigidity
B. Modulus of resilience
C. Modulus of elasticity
D. Modulus of toughness

A

C. Modulus of elasticity

90
Q
  1. It is a measure of the total energy-absorbed capacity of the material and includes the energy of both the elastic and plastic deformation.

A. Modulus of toughness
B. Modulus of resilience
C. Modulus of elasticity
D. Modulus of rigidity

A

A. Modulus of toughness

91
Q
  1. What material where a scriber made from?

A. Carbon steel
B. Tool steel
C. Cold-rolled steel
D. Hot-rolled steel

A

B. Tool steel

92
Q
  1. What should be done first before applying layout blue on a piece of metal?

A. Roughened
B. Clean
C. Hot
D. Cold

A

B. Clean

93
Q
  1. How many flutes does a drill bit have?

A. 4 flutes
B. 2 flutes
C. 3 flutes
D. No flutes

A

B. 2 flutes

94
Q
  1. Where is the correction position of the tool bit when facing off a piece of material in the lathe chuck?

A. Above center
B. Below center
C. At the center
D. Off center

A

C. At the center

95
Q
  1. Standard vise has _____ jaws?

A. Soft
B. Hard
C. Semi-hard
D. Semi-soft

A

B. Hard

96
Q
  1. In machining, which of the following could be the reason if tool bit burns?
    A. Speed is too slow
    B. Materials is too hard
    C. Speed is too fast
    D. Material cannot be cut
A

C. Speed is too fast

97
Q
  1. For which of the following where the lathe compound is used?

A. Angle cutting
B. Facing
C. Grooving
D. Any of these

A

D. Any of these

98
Q
  1. When the dial on the cross-feed is turned 0.010”, how much is removed from the diameter of the stock being cut?

A. 0.010”
B. 0.005”
C. 0.020”
D. 0.015”

A

A. 0.010”

99
Q
  1. Which of the following describes a flexible back hacksaw blade?

A. Only the teeth hardened
B. A movable back
C. Flexible ends
D. Only the back hardened

A

A. Only the teeth hardened

100
Q
  1. The flexible type hacksaw blade is best suited for which of the following materials?

A. Channel iron
B. Aluminum
C. Tubing
D. Any of these

A

D. Any of these

MD ELEMENTS 1-5 (5 decks)

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