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MD ELEMENTS PER 50 v2 > E9_1 > Flashcards

E9_1 Flashcards

1
Q
  1. Metal that assists lubrication or lubricant in itself.

A. Zinc
B. Antimony
C. Babbitt
D. Lead

A

C. Babbitt

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2
Q
  1. The smallest area at a point of rupture of a tensile specimen divided by the original area is called:

A. Percentage elongation
B. Izod test
C. Charpy test
D. Percentage reduction of the area

A

D. Percentage reduction of the area

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3
Q
  1. All are associated with then grade of steel except:

A. SAE 43xx
B. SAE 13xx
C. SAE 10xx
D. SAE 74xx

A

D. SAE 74xx

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4
Q
  1. Cold working of steel plates make the metal:

A. Tougher
B. More detail
C. Harder
D. More malleable

A

C. Harder

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5
Q
  1. The property that characterizes the material’s ability to be drawn into a wire is called:

A. Ductility
B. Thermal conductivity
C. Tensile strength
D. Endurance limit

A

A. Ductility

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6
Q
  1. Normal stress relieving temperature for cast steel is:

A. 200 to 3500F
B. 400 to 5000F
C. 300 to 4000F
D. 450 to 5500F

A

D. 450 to 5500F

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7
Q
  1. Most effective alloying element for reducing brittleness of steel at very low temperature.

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

A

D. Nickel

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8
Q
  1. Ordinary steel begins to lose strength and elasticity significantly of about what temperature?

A. 900 – 10000F
B. 800 – 9000F
C. 700 – 8500F
D. 600 – 7000F

A

D. 600 – 7000F

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9
Q
  1. For a high corrosion resistant stainless steel, what minimum chromium content is required?

A. 8%
B. 4.3%
C. 1.1%
D. 5.8%

A

A. 8%

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10
Q
  1. A material that should be avoided in constructing wood pattern is:

A. Sap wood
B. Kiln dried wood
C. Heart wood
D. Core portion of wood

A

A. Sap wood

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11
Q
  1. Hacksaw blades are made of what materials?

A. Tool steel
B. Tungsten alloy steel
C. High-speed steel
D. Any of these

A

D. Any of these

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12
Q
  1. A hacksaw blade with 24 TPI is best suitable for cutting which of the following materials?

A. Tubing
B. Brass and copper
C. Sheet metal over 18 gage
D. Any of these

A

D. Any of these

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13
Q
  1. Which of the following is a “must” for all hard hacksaw blades?

A. It has a hard back and flexible teeth
B. It has flexible back and hard teeth
C. It has the entire blade hardened
D. It will only fit solid frame hacksaw

A

C. It has the entire blade hardened

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14
Q
  1. In how many positions can a hacksaw blade be placed in a frame?

A. Two positions
B. One position
C. Four positions
D. Three positions

A

C. Four positions

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15
Q
  1. Files are divided into two general classes. How are these classified?

A. Rough and smooth
B. Single-cut and double cut
C. Large and small
D. Flat shapes and round shapes

A

B. Single-cut and double cut

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16
Q
  1. The term “set” of a saw best defines what?

A. To set properly in the frame
B. Alternate teeth are turned slightly to left and right to make cutting slot slightly wider than the thickness of the thickness of the blade
C. The teeth have been case-hardened for better cutting
D. The teeth are set evenly apart

A

B. Alternate teeth are turned slightly to left and right to make cutting slot slightly wider than the thickness of the thickness of the blade

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17
Q
  1. All hard hacksaw blade is best suited for work on which of the following?

A. Brass
B. Cast iron
C. Tool steel
D. Any of these

A

D. Any of these

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18
Q
  1. Which of the following is the best instrument for measuring thousandths of an inch?

A. Caliper
B. Micrometer
C. Tachometer
D. Pyrometer

A

B. Micrometer

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19
Q
  1. A hacksaw blade with 34 teeth per inch should be used for cutting which of the following materials?

A. Brass
B. Heavy stock
C. Cast iron
D. Thin wall tubing

A

D. Thin wall tubing

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20
Q
  1. How is the hacksaw blade should be placed in the frame?

A. The teeth pointing forward
B. The teeth pointing backward
C. One end looser than the other end
D. The teeth facing in any direction

A

A. The teeth pointing forward

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21
Q
  1. The gradual chemical reaction by other substance such that the metal is converted to an oxide or other compounds.

A. Corrosion
B. Cheeping
C. Rusting
D. Weathering

A

A. Corrosion

22
Q
  1. What is the property of a material which resists forces acting to pull the material apart?

A. Shear strength
B. Tensile strength
C. Torsional strength
D. Compressive strength

A

B. Tensile strength

23
Q
  1. What is the difference between brass and bronze?

A. Brass is composed of copper and zinc while bronze is composed of copper and tin
B. Brass is composed of copper and zinc while bronze is basically copper and tin plus non-ferrous alloy such as manganese, aluminum and chromium
C. Bronze is reddish in color while brass is a mixture of copper and antimony
D. Bronze is mostly an alloy of copper and tin while brass is a mixture of copper and antimony

A

A. Brass is composed of copper and zinc while bronze is composed of copper and tin

24
Q
  1. A liquid metal is called ______.

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

A

A. Mercury

25
Q
  1. Which of the following elements when large quantity is harmful to the ferrous metal?

A. Sulfur
B. Silicon
C. Zinc
D. Aluminum

A

A. Sulfur

26
Q
  1. It has molybdenum alloy except ______.

A. SAE 43xx
B. SAE 41xx
C. SAE 6xxx
D. SAE 5xxx

A

D. SAE 5xxx

27
Q
  1. Cast alloy steel for very high temperature application.

A. Manganese – nickel steel casting
B. High chrome steel casting
C. Chrome – nickel steel casting
D. High manganese casting

A

C. Chrome – nickel steel casting

28
Q
  1. What heat treatment process can cast steel materials of high chrome high manganese etc. be subjected for the purpose of machining process?

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

A

A. Annealing

29
Q
  1. Galvanized steel plate is:

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

A

C. Zinc

30
Q
  1. Major component of bronze casting is:

A. Copper
B. Manganese
C. Zinc
D. Lead

A

A. Copper

31
Q
  1. Which of the following is the usual procedure when cutting a long thin piece of metal?

A. Turn the blade upside down in the frame
B. Turn the blade at right angles to the frame
C. Use a blade with fewer teeth per inch
D. Set the blade in the frame with the teeth facing toward you

A

B. Turn the blade at right angles to the frame

32
Q
  1. A hacksaw blade with 18 teeth per inch is best suited for cutting what material(s)?

A. Solid stock
B. Aluminum
C. Cast iron
D. Any of these

A

D. Any of these

33
Q
  1. What is used of coolant in the power hacksaw when cutting materials?

A. Absorb the heat of friction
B. Prevent the blade from overheating
C. Prevent the blade from losing its temper
D. All of these

A

D. All of these

34
Q
  1. What is used for finishing a piece of work to size with a file?

A. Double-cut fine-tooth file
B. Mill file
C. Single-cut fine-tooth file
D. Crossing file

A

C. Single-cut fine-tooth file

35
Q
  1. The product of finishing off a piece of metal with a real smooth finish.

A. Draw-filling
B. Mill-filling
C. Side-filling
D. Flat-filling

A

A. Draw-filling

36
Q
  1. How do you call a small piece of metal clogged between the teeth on a file?

A. Clogs
B. Pins
C. Flats
D. Bumps

A

B. Pins

37
Q
  1. Which of the following is described as the “safe edge” of the file?

A. The end opposite the handle
B. The edge with no teeth
C. The one with the handle
D. None of these

A

B. The edge with no teeth

38
Q
  1. The best procedure when filling a piece of metal in a lathe is to take.

A. Short even strokes
B. Long fast strokes
C. Long slow strokes
D. Short fast strokes

A

C. Long slow strokes

39
Q
  1. Which of the following information is necessary when ordering a file?

A. Size (length)
B. Type
C. Shape
D. All of these

A

D. All of these

40
Q
  1. Which of the following is the best file to be used when finishing sharp corners or slots and grooves?

A. Mill file
B. Knife file
C. Square
D. Jeweler’s file

A

B. Knife file

41
Q
  1. Alloy steel known for its resistance to corrosion, abrasion and wear that is usually ideal for mill grinding of ore in cement and concentrator application. It is usually combined with molybdenum to increase the depth hardening.

A. Manganese chromium steel
B. Chromium – moly steel
C. Chromium – nickel – moly steel
D. Manganese – moly steel

A

B. Chromium – moly steel

42
Q
  1. Commonly utilized / cheapest shaft material available in the market with carbon content of 0.28 to 0. 4?

A. SAE 4132
B. SAE 4320
C. SAE 1030
D. SAE 4130

A

C. SAE 1030

43
Q
  1. Heating of metal above the critical temperature and then cooling slowly usually in the furnace to reduce the hardness and improve the machinability is called:

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

A

B. Annealing

44
Q
  1. It is hardening treatment whereby a cast metal is being heated to a very high temperature then suddenly subjected to rapid cooling to improve hardenability or wear resistance is called:

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

A

D. Quenching

45
Q
  1. SAE steel that responds to heat treatment.

A. SAE 1060
B. SAE 1117
C. SAE 1030
D. SAE 1020

A

B. SAE 1117

46
Q
  1. A form of correction that develop on a highly localized area on a metal surfaces.

A. Crevice
B. Erosion
C. Galvanic
D. Spitting

A

D. Spitting

47
Q
  1. The deterioration of organic coating characterized as completely _______.

A. Chalking
B. Rusting
C. Checking
D. Fritting

A

A. Chalking

48
Q
  1. The temperature above which the alloy is liquid and will run is known as _______.

A. Melting point
B. Flow point
C. Pour point
D. Dew point

A

A. Melting point

49
Q
  1. It refers to any layer or deposit of extraneous material on the heat – transfer surface.

A. Low line
B. Pressure drop
C. Fouling
D. Scaling

A

C. Fouling

50
Q
  1. Steel containing large amounts of mild nickel and chromium.

A. Carbon steel
B. Stainless steel
C. Alloy steel
D. Cast steel

A

B. Stainless steel

MD ELEMENTS PER 50 v2 (10 decks)

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