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MD ELEMENTS 1-5 > ELEMENTS 1 > Flashcards

ELEMENTS 1 Flashcards

1
Q
  1. The maximum stress to which a standardized test specimen may be subjected without permanent deformation.

A. Endurance limit
B. Proportional limit
C. Elastic limit
D. Plastic limit

A

C. Elastic limit

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2
Q
  1. The modulus of elasticity is a measure of:

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

A

A. Stiffness

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3
Q
  1. Aging at moderately elevated temperature expedites the process and

A. Natural aging
B. Artificial aging
C. Normal aging
D. Supernatural aging

A

B. Artificial aging

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4
Q
  1. It is a tendency to fracture without appreciable deformation

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

A

B. Brittleness

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5
Q
  1. It is the characteristic of exhibiting different properties when tested in different directions

A. Allotropy
B. Anistropy
C. Isentropic
D. Isotropic

A

B. Anistropy

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6
Q
  1. It is one in which specimen, supported at both ends as a simple beam is broken by the impact strength of the metal

A. Charpy test
B. Izod test
C. Rockwell test
D. Universal test

A

A. Charpy test

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7
Q
  1. Steel that has been deoxidized with a strong deoxidizing agent such as silicon or aluminum, in order to eliminate a reaction between the carbon and oxygen during solidification.

A. Carbon steel
B. Tool steel
C. Killed steel
D. Structural steel

A

C. Killed steel

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8
Q
  1. Involves the loss of ductility because of a physical or chemical change of the material is known as

A. Embrittlement
B. Pitting
C. Cold shortness
D. Decarburization

A

A. Embrittlement

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9
Q
  1. A material commonly used for shielding or screening magnetism

A. Brass
B. Copper
C. Aluminum
D. Soft iron

A

D. Soft iron

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10
Q
  1. A magnet is able to attract

A. Iron, aluminum and brass
B. Iron, cobalt and zinc
C. Iron, copper and nickel
D. Nickel, cobalt and steel

A

D. Nickel, cobalt and steel

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11
Q
  1. In threaded members, which of the following defines N.C?

A. Neutral cut
B. National cut
C. National coarse
D. Not Center

A

C. National coarse

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12
Q
  1. In threaded members, which of the following represents N.F?

A. National file
B. Neutral file
C. National file
D. Not found

A

C. National file

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13
Q
  1. What tool used in precision work to smooth or enlarge holes?

A. Round out
B. Reamer
C. Drift pin
D. Protractor

A

B. Reamer

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14
Q
  1. Which of the following chisels would be used for cutting oil grooves?

A. Diamond–point chisel
B. Round-nose chisel
C. Cold chisel
D. Hot chisel

A

B. Round-nose chisel

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15
Q
  1. How do you call the tool used for cleaning files?

A. File cleaner
B. File oilstone
C. File card
D. Scraper

A

C. File card

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16
Q
  1. Which of the following is not a cut of file?

A. Smooth
B. Half-round
C. Second cut
D. Bastard

A

B. Half-round

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17
Q
  1. Which of the following is the smallest size drill?

A. # 80
B. # 1
C. # 60
D. # 0

A

A. # 80

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18
Q
  1. Which of the following is the largest size drill?

A. A
B. Z
C. X
D. XX

A

B. Z

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19
Q
  1. The size of a drill is stamped on the:

A. Point
B. Margin
C. Shank
D. Flute

A

C. Shank

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20
Q
  1. Which of the following materials is used for making permanent magnets?

A. Carbon steel
B. Platinum cobalt
C. Alnico
D. All three mentioned

A

D. All three mentioned

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21
Q
  1. One of the following is the best conductor of electricity. Which one/

A. Graphite
B. China clay
C. Porcelain
D. Ceramics

A

A. Graphite

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22
Q
  1. Dielectric strength of a material depends on the material’s

A. Moisture content
B. Thickness
C. Temperature
D. All of these

A

D. All of these

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23
Q
  1. Which medium has highest value of dielectric strength?

A. Glass
B. Mica
C. Porcelain
D. Quartz

A

B. Mica

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24
Q
  1. Which of the following is a primary cell?

A. Mercury – oxide
B. Lead – acid
C. Nickel – iron – alkaline
D. Nickel – cadmium – alkaline

A

A. Mercury – oxide

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25
Q
  1. Which of the following contact point metals has highest melting point?

A. Silver
B. Tungsten
C. Gold
D. Copper

A

C. Gold

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26
Q
  1. A material best suited for manufacturing of fuse wire

A. Aluminum
B. Silver
C. Lead
D. Copper

A

B. Silver

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27
Q
  1. The laminations are made from
    A. Low carbon steel
    B. Silicon sheet steel
    C. Nickel alloy steel stays
    D. Chrome steel sheets
A

B. Silicon sheet steel

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28
Q
  1. Which of the following metals gets deposited to provide an undercut for chromium?

A. Copper
B. Silver
C. Bronze
D. Lead

A

C. Bronze

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29
Q
  1. In nickel – iron cell, the electrolyte is:

A. Dilute sulphuric acid
B. Dilute potassium hydroxide
C. Dilute sodium ammonium hydroxide
D. Dilute sodium chloride solution

A

B. Dilute potassium hydroxide

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30
Q
  1. Which of the following is not a standard thread form?

A. Square
B. Double flute
C. American National
D. 60 deg. sharp V

A

A. Square

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31
Q
  1. How do you call the tool used to cut threads in a hole?

A. Top
B. Bit
C. Tap
D. Reamer

A

C. Tap

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32
Q
  1. Hand taps are provided in sets of three. Which of the following set of three?

A. Taper, plug and end
B. Taper, plug and bottom
C. Short, taper and bottom
D. Short, medium and long

A

B. Taper, plug and bottom

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33
Q
  1. Which of the following taps should be used to start a thread?

A. Plug
B. Bottom
C. Short
D. Taper

A

D. Taper

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34
Q
  1. Which of the following size of the drill is used in preparing to tap a hole?

A. Equal to the size of the tap
B. Larger than the size of the tap
C. Smaller than the size of the tap
D. None of these

A

C. Smaller than the size of the tap

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35
Q
  1. Pipe taps are:

A. The same size from end to end
B. Tapered
C. Not fluted
D. Not hardened

A

B. Tapered

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36
Q
  1. When preparing to tap a hole for a pipe fitting the size of the drill will be:

A. Larger than the tap size
B. Smaller than the tap size
C. Equal to the size of the tap
D. None of these

A

C. Equal to the size of the tap

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37
Q
  1. Which of the following does not have to be lubricated when drilling?

A. Steel
B. Monel
C. Brass
D. Tool steel

A

B. Monel

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38
Q
  1. How do you call the tool used when cutting a hole in the side of a round piece of metal?

A. Vise
B. “V” block
C. Jaw holder
D. Chuck

A

B. “V” block

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39
Q
  1. When measuring a drill for size measure across the:

A. Margins
B. Shank
C. Flutes
D. Point

A

A. Margins

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40
Q
  1. Which of the following is not a primary cell?

A. Carbon zinc
B. Silver oxide
C. Silver zinc
D. Nickel – cadmium

A

C. Silver zinc

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41
Q
  1. Select from the conductors below that has the least electrical conductivity

A. Lead
B. Tin
C. Zinc
D. Aluminum

A

A. Lead

42
Q
  1. The material used for commutator brushes is mostly

A. Copper
B. Mica
C. Carbon
D. Cast iron

A

C. Carbon

43
Q
  1. Generally, the material for thermocouple is

A. Chrome copel
B. Chrome alumel
C. Platimum rhodum
D. Any of these

A

D. Any of these

44
Q
  1. Select the best conductor of electricity

A. Carbon
B. Silver
C. Copper
D. Iron

A

B. Silver

45
Q
  1. Any heating ad cooling of steel that produces a rounded or globular form of carbide.

A. Spheroidizing
B. Malleability
C. Graphitizing
D. Normalizing

A

A. Spheroidizing

46
Q
  1. Steel that has been hammered rolled or drawn in the process of manufacture.

A. Wrought steel
B. Rimmed steel
C. Killed steel
D. Stainless steel

A

A. Wrought steel

47
Q
  1. Which of the following improves red hardness?

A. Boron
B. Cobalt
C. Copper
D. Columbium

A

B. Cobalt

48
Q
  1. An alloy of nickel and copper.

A. Monel
B. Iconel
C. Titanium
D. Vanadium

A

A. Monel

49
Q
  1. Commutator segments are made of

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

A

C. Copper

50
Q
  1. If you wanted to check the face of a pump slide valve or other flat-faced valve, you could check for trueness on a:

A. Flat board
B. Piece of glass
C. Surface plate
D. Bearing plate

A

C. Surface plate

51
Q
  1. Which of the following is used to keep a metal clean while soldering?

A. Flax
B. Flux
C. Torch
D. Insulated

A

B. Flux

52
Q
  1. Before splicing electric wires, they should be:

A. Tinned
B. Soldered
C. Cleaned and tinned
D. Insulated

A

C. Cleaned and tinned

53
Q
  1. Before drilling a hole in a piece of metal, it should be:

A. Marked with chalk
B. Scribed
C. Center-punched
D. Protracted

A

C. Center-punched

54
Q
  1. To check the speed of a motor or other rotary machine, one would use a:

A. Galvanometer
B. Tachometer
C. Micrometer
D. Geiger counter

A

B. Tachometer

55
Q
  1. A tap or die marked ¼ - 20 indicates:

A. ¼” radius – 20 cm. long
B. ¼” diameter – 20 threads per in.
C. ¼” radian – 20 threads per in.
D. ¼” turn – 20 times

A

B. ¼” diameter – 20 threads per in.

56
Q
  1. After a piece of pipe has been cut, the hole is cleaned out with a:

A. Piper reamer
B. Pipe taper
C. Pipe cleaner
D. Hole cleaner

A

A. Piper reamer

57
Q
  1. How do you call the tool(s) used for cutting pipe threads?

A. Pipe cutter
B. Pipe threader
C. Pipe stock and die
D. Pipe ratcher cutter

A

C. Pipe stock and die

58
Q
  1. How do you call the tool used when working with larger sizes of pipe?

A. Chain pipe wrench
B. Cahin holder
C. Chain tongs
D. A or B

A

D. A or B

59
Q
  1. What tool is used when preparing to put fittings on copper tubing?

A. Tube spreader
B. Tube retarded
C. Flaring tool
D. Tube countersink

A

C. Flaring tool

60
Q
  1. What are the most commonly used materials as photo cathode for the photoelectric emission?

A. Barium and calcium
B. Cesium and rubidium
C. Arsenic and boron
D. Thorium and tungsten

A

C. Arsenic and boron

61
Q
  1. Manganese is an alloy of

A. Copper, manganese and nickel
B. Copper, zinc and lead
C. Copper, aluminum and chromium
D. Copper, chromium and cadmium

A

A. Copper, manganese and nickel

62
Q
  1. The one that is an acceptor impurity element.

A. Antimony
B. Gallium
C. Arsenic
D. Phosphorus

A

B. Gallium

63
Q
  1. Which of the following is not a method of non-destructive testing of steel castings
    and forging?

A. Radiography
B. Magnetic particle
C. Ultrasonic
D. Chemical analysis

A

D. Chemical analysis

64
Q
  1. All of the following statements about rusting of iron are correct, except:

A. Contact with water and oxygen are necessary for rusting to occur.
B. Contact with a more electropositive metal reduces rusting.
C. Halides aggravate rusting process which involves electrochemical oxidation
reduction reaction.
D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

A

D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

65
Q
  1. If 1080 steel is annealed by very slow cooling from 10000C to ambient temperature, its microstructure will consist almost solely of:

A. Austenite
B. Bainite
C. Cementite
D. Pearlite

A

D. Pearlite

66
Q
  1. Steel can be strengthened by all of the following practices, EXCEPT:

A. Annealing
B. Quenching and tempering
C. Work hardening
D. Grain refinement

A

A. Annealing

67
Q
  1. Intrinsic silicon becomes extrinsically conductive, with electrons as majority carriers when doped with which of the following?

A. Antimony
B. Boron
C. Germanium
D. Aluminum

A

A. Antimony

68
Q
  1. The linear portion of the stress – strain diagram of steel is known as the:

A. Modulus of elasticity
B. Plasticity
C. Irreversible range
D. Elastic range

A

D. Elastic range

69
Q
  1. Imperfections within metallic crystal structures may be all of the following, EXCEPT:

A. Lattice vacancies or extra interstitial atom
B. Ion pairs missing in ionic crystals
C. Displacement of atoms of interstitial sites
D. Linear defects, or slippage dislocations caused by shear

A

B. Ion pairs missing in ionic crystals

70
Q
  1. A steel numbered SAE – AISI, C1035 when not rolled and contains 0.60% to 1.30% carbon and used when extra hardness is required.

A. Low carbon steel
B. Medium carbon steel
C. High carbon steel
D. Very high carbon steel

A

C. High carbon steel

71
Q
  1. Which of the following alloying elements used in making high speed steel?

A. Molybdenum
B. Nickel
C. Manganese
D. Silicon

A

A. Molybdenum

72
Q
  1. Which of the following alloying used in springs to make more reliant?

A. Silicon
B. Tungsten
C. Hardness and resistance
D. Nickel

A

A. Silicon

73
Q
  1. It refers to that property in steel which resist indention or penetration. It is usually expressed in forms of the area of an indention made by a special ball under a standard load or the depth of a special indentor.

A. Hardness
B. Ductility
C. Malleability
D. Wear resistance

A

A. Hardness

74
Q
  1. The distance from a point on a screw thread to a corresponding point on an adjacent thread, measured parallel to the axis.

A. Pitch
B. Lead
C. Thread
D. Crest

A

A. Pitch

75
Q

75 The top surface joining the two sides of a thread.

A. Pitch
B. Lead
C. Lead
D. Space

A

B. Lead

76
Q
  1. The amount of variation permitted in the size of a part. It is the difference between the limits of maximum and minimum dimensions of a given part. It may be expressed at plus, minus or as both plus and minus.

A. Tolerance
B. Limit
C. Variation
D. Clearance

A

A. Tolerance

77
Q
  1. The instrument used to reshape a grinding wheel that is grooved or out of round is called a:

A. Wheel aligner
B. Wheel emery
C. Wheel dresser
D. Wheel cutter

A

C. Wheel dresser

78
Q
  1. The instruments used to remove old packing from packing glands and stuffing boxes are called:

A. Packing tools
B. Gland box cleaners
C. Packing bits
D. Packing screws

A

A. Packing tools

79
Q
  1. When working on bearings and checking for high spots, it is customary to apply what?

A. White lead
B. Dykem blue
C. Red lead
D. Prussian blue

A

D. Prussian blue

80
Q
  1. When a metal is cold worked, all of the following generally occur, EXCEPT:

A. Ductility decreases
B. Grains become equal – axed
C. Tensile strength increases
D. Slip or twinning occurs

A

B. Grains become equal – axed

81
Q
  1. Hard water is water, which contains soluble salts of which of the following elements

A. Sodium
B. Sulfur
C. Calcium
D. Chlorine

A

C. Calcium

82
Q
  1. Which of the following metals has the highest specific heat capacity at 100oC?

A. Aluminum
B. Bismuth
C. Copper
D. Iron

A

A. Aluminum

83
Q
  1. Aluminum pistons are either cast or

A. Ground
B. Forged
C. Pressed
D. Welded

A

B. Forged

84
Q
  1. Which of the following gasket materials should be used on a Freon system?

A. Metallic
B. Asbestos
C. Rubber
D. A and B

A

D. A and B

85
Q
  1. Valves and piping in an ammonia system are made of

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

A

A. Iron

86
Q
  1. The non ferrous alloy corrodes in ammonia is

A. Copper
B. Bronze
C. Brass
D. All of these

A

D. All of these

87
Q
  1. What is used in the main condenser to control electrolysis?

A. Brass plate
B. Aluminum plate
C. Zinc plates
D. Bronze plate

A

C. Zinc plates

88
Q
  1. Which of the following types of packing would be used on steam joints?

A. Asbestos
B. Neoprene
C. Metallic
D. A or C

A

D. A or C

89
Q
  1. A classification of iron ore which contains 72.5% iron when pure and the remaining percentage are impurities.

A. Hematite
B. Magnetite
C. Limanite
D. Siderite

A

B. Magnetite

90
Q
  1. The process applied to iron pipe, which retards corrosion, is called

A. Galvanizing
B. Annealing
C. Soldering
D. Tinning

A

A. Galvanizing

91
Q
  1. Which of the following represents manganese steel?

A. 13XX
B. 40XX
C. 50XX
D. 10XX

A

A. 13XX

92
Q
  1. A scriber is made from what steel?

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

A

C. Tool steel

93
Q
  1. Which of the following iron ore also known as “brown hematite” or ferric oxide a yellowish brown powder?

A. Hematite
B. Magnetite
C. Limanite
D. Siderite

A

C. Limanite

94
Q
  1. It is another kind of furnace cast iron is remelted to make into cast iron. The furnace is charges with layers of coke and pig iron plus scrap iron.

A. Open-hearth furnace
B. Electric furnace
C. Cupola
D. Bessemer

A

C. Cupola

95
Q
  1. A furnace which consists of blowing a stream of air through a molten mass of iron pig. A stream of air is turned on through the wind box and enters the converter at the bottom. Manganese, carbon and other elements of varying amounts are added to produce steel which is then poured and solidifies.

A. Open-hearth furnace
B. Electric furnace
C. Cupola
D. Bessemer

A

D. Bessemer

96
Q
  1. A furnace similar to open-heart. The principal difference is the method of heating the charged. It is used in producing quality of steels because melting and refining is closely controlled.

A. Closed-heart furnace
B. Electric furnace
C. Cupola
D. Bessemer

A

B. Electric furnace

97
Q
  1. It is the process of reheating or drawing of metal that has been hardened to a comparatively low temperature in order to relieve the hardening strain and
    increase the toughness of the steel.

A. Tempering
B. Annealing
C. Cyaniding
D. Normalizing

A

A. Tempering

98
Q
  1. Case hardening is the process of hardening the outer surface of the metal and inner parts are soft. What percentage of carbon content that this type of
    hardening is allowed?

A. 15% and above
B. 10 to 20% only
C. less than 5% only
D. Any of the following

A

A. 15% and above

99
Q
  1. A steel numbered SAE – AISI, C1018 and contains 0.10% to 0.30% carbon.

A. Low carbon steel
B. Medium carbon steel
C. High carbon steel
D. Very high carbon steel

A

A. Low carbon steel

100
Q
  1. A steel numbered SAE – AISI, C1035 when not rolled and contains 0.30% to 0.60% carbon.

A. Low carbon steel
B. Medium carbon steel
C. High carbon steel
D. Very high carbon steel

A

B. Medium carbon steel

MD ELEMENTS 1-5 (5 decks)

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