E9_2 Flashcards
- How is “eleven – sixteenths” of an inch expressed in decimal?
A. 0.6785
B. 0.6875
C. 0.7685
D. 0.6578
B. 0.6875
- What is the approximate distance of the making on a micrometer barrel?
A. 0.025” apart
B. 0.0025” apart
C. 0.250” apart
D. 2.50” apart
A. 0.025” apart
- Which of the following is the effect if the lathe is put into black gear?
A. Go backwards of the same speed
B. Faster
C. Slower
D. At a slower speed backwards
C. Slower
- The work should be held with ______ when using a drill press.
A. The hand
B. A vise or clamp
C. A pair of pliers
D. Gloves on
B. A vise or clamp
- What is normally used in drilling a hole in a piece of work held in a lathe chuck?
A. Compound rest
B. Tailstock and drill chuck
C. Cross-feed
D. Headstock
B. Tailstock and drill chuck
- 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
C. Cooling slowly in air
- What is the main purpose of “annealing” a metal?
A. To make the metal harder
B. To make metal softer
C. To make the metal harder medium-hard
D. To make the metal harder shiny
B. To make metal softer
- The purpose of “tempering” is to make a metal what?
A. Harder
B. Less brittle
C. Softer
D. More brittle
B. Less brittle
- What is the minimum diameter of a piece of round stock necessary to make key ¾” on a side?
A. 1.5”
B. 0.1”
C. 1.06”
D. 0.75”
C. 1.06”
- A scriber is made from what material?
A. Carbon steel
B. Tool steel
C. Cold-rolled steel
D. Hot-rolled steel
B. Tool steel
- The corrosion of iron or iron – base alloy.
A. Rusting
B. Crazing
C. Chalking
D. Fritting
A. Rusting
- A corrosion occurs within or adjacent to a crevice formed by contact with another piece of the same or another metal is called:
A. Galvanic
B. Pitting
C. Erosion
D. Crevice
A. Galvanic
- An alloy of tin, copper, antimony or sometimes lead.
A. Gold
B. Babbitt
C. Aluminum
D. Cast iron
B. Babbitt
- The cheapest and most abundant engineering material is __________.
A. Aluminum
B. Steel
C. Cast iron
D. Babbitt
C. Cast iron
- They are usually steel or steel casting.
A. Mild steel
B. Carbon steel
C. Fire box steel
D. Drop – forge – dies
B. Carbon steel
- An iron has physical properties closely resembling those of mild steel called.
A. Malleable cast iron
B. Malleable iron
C. White iron
D. Gray iron
A. Malleable cast iron
- An iron in which most of the carbon is chemically combined with the iron is called.
A. Cast iron
B. Gray iron
C. White iron
D. Malleable iron
C. White iron
- Which of the following metals is non-magnetic?
A. Manganese steel
B. Cast steel
C. Alloy steel
D. Cast iron
A. Manganese steel
- Which of the following is not a kind of cast iron?
A. Gray iron
B. White iron
C. Malleable iron
D. Lead iron
D. Lead iron
- Which of the following is not used to temper steel?
A. Oil bath
B. Brine / slat bath
C. Steam bath
D. Water bath
C. Steam bath
- Before applying layout blue on a piece of metal, it must be:
A. Roughened
B. Cleaned
C. Heated
D. Cold
B. Cleaned
72 A drill bit has how many flutes?
A. 4 flutes
B. 2 flutes
C. 3 flutes
D. No flutes
B. 2 flutes
- The alignment of coupling faces can be checked by which process?
A. Using an inside micrometer
B. Inserting a thermocouple
C. Inserting a feeler gage between the coupling faces at various points around the circumference
D. Rotating and measuring to nearest permanent fitting
C. Inserting a feeler gage between the coupling faces at various points around the circumference
- A piece of cast iron held against an emery wheel will give off what?
A. Dull yellow sparks
B. Red sparks
C. Bright shiny sparks
D. No sparks
A. Dull yellow sparks
- When cutting material in lathe, the softer the material being cut, the tool bit should have:
A. More top rake
B. Double top rake
C. Less top rake
D. Any of these
C. Less top rake
- After grinding a tool bit, the cutting edge should be:
A. Case-hardened
B. Stoned with an oilstone
C. Rubbed with emery cloth
D. Rubbed with crocus cloth
B. Stoned with an oilstone
- When turning a piece of round metal in a lathe, the front clearance should be smaller for:
A. Large-diameter
B. Cutting angles
C. Small-diameter cutting
D. None of these
C. Small-diameter cutting
- When cutting material in a lathe, the harder the material being cut, the tool bit should have:
A. More side rake
B. More top rake
C. Less side rake
D. No side rake
C. Less side rake
- What is the primary purpose of knurling?
A. Smooth material
B. Roughen material
C. Polish material
D. Sharpen material
B. Roughen material
- What do you call the process of removing the sharp edges from a piece of stock?
A. Knurling
B. Planning
C. Chamfering
D. Turning
C. Chamfering
- Which of the following metals is easy to chisel?
A. Alloy steel
B. Manganese steel
C. Stainless steel
D. Cast iron
B. Manganese steel
- Ferrous metals contain a relatively large amount of ______.
A. Manganese
B. Carbon
C. Sulfur
D. Phosphorus
B. Carbon
- Which of the following is not a classification of iron core?
A. Siderite
B. Hematite
C. Sulfurite
D. Magnetite
C. Sulfurite
- Stainless steel is obtaining principally by the use of which of the alloying elements?
A. Chromium
B. Nickel
C. Carbon
D. Tungsten
A. Chromium
- Which of the following metals will respond to heat treatment?
A. Cast iron
B. Wrought iron
C. Medium carbon steel
D. Low carbon steel
C. Medium carbon steel
- The property of steel which resist indention of penetration is called.
A. Hardness
B. Elasticity
C. Ductility
D. None of these
A. Hardness
- The ability of metal to stretch band or twist without breaking or cracking is called.
A. Elasticity
B. Ductility
C. Brittleness
D. Plasticity
B. Ductility
- The ability of the material to return to its original shape after being elongated or distorted when the forces are released is called.
A. Elasticity
B. Brittleness
C. Plasticity
D. Creep
A. Elasticity
- Material, usually ceramics employed where resistance to very high temperature is required, as for furnace linings and metal melting pots is called:
A. Bricks
B. Insulator
C. Refractories
D. Clay
C. Refractories
- Any material that retard the flow of electricity, used to prevent or escape of electric current from conductors.
A. Bricks
B. Insulators
C. Refractories
D. Composite
B. Insulators
- At what speed that carbon steel drills should be operated?
A. Speeds greater than that when using a high-speed drill
B. Speeds less than that when using a high-speed drill
C. The same speed as that when using a high-speed drill
D. None of the above
B. Speeds less than that when using a high-speed drill
- A specific method of zinc galvanizing in which parts are tumbled in zinc dust at high temperatures.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
A. Sheradizing
- Abrasion of parts against wheels or belts coated with polishing compounds.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
C. Polishing
- A super fine grinding operation used to expose non-fragmented, crystalline base metal.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
B. Super finishing
- A process in which metal is dipped in ductile acid solutions to remove dirt grease and oxides.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
D. Pickling
- A hot-dip or electroplate application of tin to steel.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
A. Tin-plating
- A fine grinding operation used to obtain exact fit and dimensional accuracy.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
D. Lapping
- The covering of surfaces with an organic film of paint, enamel or lacquer.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
C. Organic finishes
- The spraying of molten metal onto a product. Methods include metallizing, metal powder spraying and plasma flame spraying.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
B. Metal spraying
- Application of a thin phosphate coating on steel improve corrosion resistance.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing
A. Parkerizing
