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