Machine tool
The disadvantage(s) of machining between a chuck and tailstock center are (is):
Both A and B
Center drills break as a result of _______.
Both A and C are correct
Which of the following instruments would be best to determine an accurate linear measurement?
Dial caliper
Which of the following is the unit of measure for feed speed?
Surface feed per minute (SFPM)
When drilling a hole in a piece of work chucked in a lathe, you should mount the drill chuck in the ______.
Tailstock
One advantage of working between centers is _______.
The diameters can be turned concentrically
Center drilled holes that are drilled too deep will cause ________.
The headstock and tailstock centers to fit improperly
The greater the size of the work to be held between centers and the heavier the cuts, ________.
The larger the center drilled hole
A live center is located in a four jaw chuck. All of the following are true except:
The live center must be hardened
One advantage of working between centers is _____.
The work piece can be removed and returned without loss of synchronization between thread and tool
The rotating part of a micrometer is known as the ____.
Thimble
Acetylene becomes very unstable and may burn rapidly or explode at pressure above 15 psig.
True
Which of the following is true regarding liquid penetrant testing?
it will detect flaws that come to the surface of the weld or material
A roughened checkered surface is machined by a lathe on round stock using a ____.
knurling tool
When a lathe is used for thread cutting, the number of threads per inch produced is determined by the speed relationship between the _______.
lead screw and head stock spindle
The designation 1/4-20 describes ______.
machine bolt size and threads per inch
If a micrometer were opened to a distance of 0.0001 inch, you would say the reading is ______.
one ten thousandth of an inch
Before power to a lathe is turned on, it is a good shop practice to first hand feed the carriage to ensure ______.
all locked devices have been released
Before power to a lathe is turned on, it is a good shop practice to first hand feed the carriage to ensure ____.
all locking devices have been released
The feed change lever on the lathe apron selects the following:
all of the above
What describes capillary action?
all of the above
Which of the following will improve a brazed joint quality?
all of the above
Safe welding practice requires ______.
all the above
Unified threads fits are classified as 1A, 2A, or 3A. The symbol "A" indicates ___.
an external thread
To properly cut an odd numbered thread with a lathe using the thread dial indicator, you should close the lathe split or half-nut on _______.
any numbered line on the dial
One method of accurately checking the alignment of lathe centers is by moving a dial indicator, securely mounted on a compound rest, between two positions on a test bar. If the dial indicator reading on the tailstock end of the test bar shows a higher reading (plus) reading than the dial indicator reading at the headstock end, you should move the tailstock____.
away from you to correct alignment
Which of the following operations can not be preformed with the workpiece between centers?
parting
To select a cutting speed for a turning operation with a forming tool you should:
reduce the calculated cutting speed
A dial indicator is used to measure ______.
shaft eccentricity
The welding process using an electric arc developed between a flux covered electrode and the metal being welded is known as ________.
shield metal arc welding
What is another name for SMAW?
shield metal arc welding
When performing a procedure that uses a filler material below 840F the process would be called:
soldering
Setting up a welding job, where the work is the positive pole and the electrode is the negative pole for the arc, is known as a/an ____.
straight polarity welding circuit
The electrode has 3010. What does the 30 stand for?
tensile strength
One advantage of working between centers is _____.
that diameters can be turned concentrically
To operate the lathe spindle in slower speeds:
the back gear should be engaged and the bull gear lock pin down or disengaged
In SMAW what causes slag deposit over the weld?
the cooling of vaporized flux
A welding electrode is marked E-6010, this designation means that ________.
the electrode is to be used for shield metal arc welding
The direction of the lead screw rotation can be changed using which of the following?
the feed reverse lever
The metal to be welded is called the _____ metal.
base
Enlarging and truing an existing hole is called ______.
boring
Which of the following operations can not be preformed with the workpiece between centers?
boring
Which of the following is true?
both a and b are true
What differentiates brazing from braze welding?
brazing operations depend on capillary action
When a cutting flame has an excess of fuel, the flame is called a(n) _____.
carburizing
The dead center of a lathe can be properly used only after the end of the workpiece has been ___.
center drilled
A ____ is used to align a single point threading tool with the workpiece.
center gage
Brass metal is an alloy composed mainly of _______.
copper and zinc
Which of the following statements regarding the MMA shop lathes is correct?
the lathes have four step cone pulleys
Which of the following is NOT part of a procedure for knurling?
do not lubricate the knurling tool and work piece
A tailstock "dead center" has been given that name because it _______.
does not revolve
Boring tools must have sufficient side relief and ____ to be efficient cutting tools.
end relief
Which of the lathe operations listed is best done with the carriage locked in position?
facing work held in a chuck
All flaws are defects.
false
When joining materials in a process that involves melting the base metal, the process is called?
fusion welding
GMAW stands for ________.
gas metal arc welding
While performing a turning operation on a lathe, you experience tool chatter. Which of the following should be checked?
All of the above
Comparing a brazing to welding operation, which of the following is true?
All of the above are true
Which of the following operations can not be preformed with the workpiece between centers?
Boring
The advantage(s) of machining between a chuck and tailstock center are (is):
Both A and B
What best describes "Feed Speed"?
. Travel of the tool per minute
To safely change spindle speeds on a lathe, you must first _______.
. stop the lathe rotation
In a turning operation the tool is advanced an actual 0.005 thousands of an inch. How much is the diameter of the work piece reduced?
0.005
A trial cut was taken on the lathe. The reading on the work piece are 2.240" at the headstock end and 2.220 at the tailstock end. To align the centers, the machinist should adjust the tailstock:
0.010 inches away from the operator
One turn of the micrometer barrel will linearly move the spindle ________.
0.025 inch
A piece of 3/4 inches round stock has a spec tolerance of +- .002 inches. Which of the following would be a measurement of material in tolerance?
0.752
The tool rest on a bench grinder should be how far away?
1/8 inch
Because of its instability, the acetylene gas used in oxy/fuel cutting must remain at pressures less than ___ psi when in its gaseous form.
15
An SDS has how many sections?
16
The designation 7028 is typically located on an arc welding electrode. Which of the listed letters and/or digits correctly identifies the welding position for which the electrode is recommended?
2
A reading of 0.625 inches on a micrometer with a 2 to 3 inch range would be equal to:
2 5/8
To cut a 60 degree thread form, the tool is fed into the work at a ____ degree angle.
30
The compound rest is set perpendicular to the axis of the workpiece. To cut an external right-handed thread, the compound must be swiveled:
30 degrees to the right
Calculate the RPM for turning a 0.500 inch piece of steel with a cutting speed of 60 SFPM using a high speed steel tool bit.
480 RPM
What is the angle formed by the sides of the thread for an American National thread form?
60
The included angle of a lathe dead center measures:
60 degrees
In machine shop practice, a center gage is used for checking the angle of __________.
60° thread cutting tools
you musts finish a piece of material to 8 inches with a tolerance of +- .005 inches. What is the acceptable length?
7.995 to 8.005
According to the American Welding Society. Brazing operations will use filler material with a melting temperature of:
840F or above
When machining a long piece of work between centers you must __________.
Correct of expansion of the work by readjusting the tailstock center
Which of the following would be considered "reverse polarity"?
DCEP
Generally the first steps taken in getting ready to turn between centers are usually _____.
Facing and center drilling
Which of the lathe operations listed is best done with the carriage locked in position?
Facing work held in a chuck
If the tailstock is offset in a direction away from the operator, the shaft will:
Have a taper with the end by the tailstock being larger
You are operating a lathe with "double depth" dials. Which of the following is true?
If you advance a dial micrometer 0.020 inches the tool will advance 0.010 inches
The tailstock of a lathe is equipped with a self-holding taper. What is this type of taper called?
Morse taper
The most accurate method of measuring the setting of an inside caliper is to use a/an ______.
Outside micrometer
What type of test is used on a grinding wheel before it is installed on a grinder?
Ring test
A lathe compound rest is set at 30 degrees to the right. What distance does the tool travel toward the chuck when the compound is advanced?
Twice the distance
The main function of the half-nut lever is to facilitate:
threading
What is the purpose of Radiographic inspection?
to detect any discontinuity throughout the weld
One method of accurately checking the alignment of lathe centers is by moving a dial indicator, securely mounted on a compound rest, between two positions on a test bar. If the dial indicator reading on the tailstock end of the test bar shows a lower (minus) reading than the dial indicator reading at the headstock end, you should move the tailstock ____.
toward you to correct alignment
All welds have flaws in them.
true
When performing a liquid penetrant inspection, a developer is put on the metal surface and that process draws out the color in the dye so that it can be seen in a flaw.
true
Feeds for reaming are ___ that used for drilling.
twice
What position should the feed change lever be placed for a turning operation?
up
Oxygen and acetylene cylinders should always be stored ______.
upright with the cylinder caps screwed on
In boring, if chatter occurs ______.
use as large a bar as possible without binding in the bore
When using a wheel dressing tool to true up a grinding wheel, you should always ____.
wear googles to protect your eyes
