Final Exam
Which joint shown above is a butt joint
A
In C in C machining, how are the primary rotary axes designated?
A, B, C
This type of cutting fluid causes a film to develop on the tool surface and provides anti-weld properties. They contain sulfur chlorine and or phosphorus.
Active cutting oil's
Which is true of alternate sawtooth set
All of the above
Which of the following is a true advantage of Bandsawing?
All of the above
Which of the following is true? - A is rotation about the X axis - B is rotation about the Y axis - C is rotation about the Z axis - All of the above
All of the above
In the EDM, the cutting tool is actually
An electrode
The heat source for oxyfuel-gas welding Comes from which of the following?
And exothermic reaction with oxygen
Which joint shown above is a Lap joint?
B
Which joint as shown above is a Tee joint
C
Joint design in brazing is especially important because of its influence on:
Capillary action
The EDM workpiece must be
Conductive
EDM electrodes are made of
Copper or graphite
Which joint shown above is an edge joint
D
The largest single use of EDM is for
Die making
This process is the thermal erosion process In which metal is removed by a series of recurring electrical discharge is between a cutting tool acting as an electrode and a conductive workpiece, in the presence of a dielectric fluid.
Electrical discharge machining
This type of cutting fluid contains oil droplets suspended in water by special additives to hold the oil in suspension
Emulsifiable cutting oil's
On a twist drill, this feature allows a space for the chips to move out of the hole
Flute
In the process illustrated above, The electrode is melting into the weld pool. What is this process known as?
GMAW
What is the proper term for the type of welding commonly called Mig
GMAW
What is the proper term for the type of welding commonly called Tig
GTAW
Which is true of wavy sawtooth set
Groups are flared left and right
This element of sawblade geometry is where the chip goes as it is formed
Gullet
For long holes such as those found in gun bores, __________ drills are used. The length of the hole requires that coolant delivered through the shaft of the drill to the cutting front.
Gun
Which of the following is not a desirable characteristics of a cutting fluid?
Hydrophobic reaction with the surface of the workpiece
Which of the following is not an advantage of emulsifiable oil's?
Illuminates all problems associated with rancidity and bacterial growth
This type of hole intersects another hole within a workpiece
Interrupted hole
The pitch of a sawblade refers to the distance between teeth. what is a good rule of thumb when selecting a blade pitch?
It must be fine enough that at least three saw teeth or engaging the material at any given time
Soldering is not used to join:
Metal to glass
Which of the following is a true advantage of power hacksawing?
None of the above
Which of the following is not true of acetylene? - It is hazardous at pressures exceeding 15 psi - It is dissolved in acetone in the cylinder - It is a simple hydrocarbon - none of the above (all are true of acetylene)
None of the above
Which of the following is not a function of a cutting fluid?
None of the above (all are functions of cutting fluids)
Which of the following is not a health risk associated with the use of cutting fluids?
None of the above (all are health risks associated with cutting fluids)
Periodically with drawing the drill to clear chips is called
Pecking
Which of the following is not a function of the dielectric fluid used an EDM
Polishes the machined layer
This type of saw uses reciprocating motion
Power hacksaw
There are two main types of EDM's; The _______ (or sinker) and the _______. Each are used to produce very small and accurate parts as well as large items like automotive stamping dies and aircraft body components. The largest single use of EDM is in die making.
Ram——-wire
Welding current can be of three types. Direct current electrode negative or _________- Causes electrode to melt faster and deposit filler metal faster. Used on thin materials. In this arrangement, the electrode is negative and the work piece is positive.
Reverse polarity
Which of the following is not a true difference between SAW AND SMAW?
SAW Is done underwater
The proper term for welding with a flux covered electrode is _________.
SMAW
The twist drill is held and driven by the ________. These can be straight for use in collets or drill chucks, or tapered for mounting directly into machine spindles.
Shank
Which of the following is not a purpose served by the electrode covering?
Shields the welder from electrical shock
The main disadvantage of wire EDM is
Slower metal removal rates
Welding current can be of three types direct current electrode negative or ________- Causes electrode to melt faster and deposit filler metal faster. Used on thin materials. In this arrangement, the electrode is negative and the workpiece is positive.
Straight polarity
This method of soldering does not require holes to penetrate the board.
Surface mount technology
The main difference between brazing and soldering is one of:
Temperature
When identifying axes on a typical machine tool, this axis is usually the easiest to find because it is the axis about which the spindle rotates
The Z axis
In CNC machines, G90 and G91 would make a difference In which of the following?
The tool path
This type of hole typically is preferred due to its simplicity
Through hole
The type of drill reduces the amount of materials that must be removed. Only cuts a ring of material out. Lasers drill by this method.
Trepan
On a typical or more access wire EDM machine, one set of coordinates is designated as X and Y. How are the other two axes identified?
U and V
The ________ is the solid part of the drill bit along the axis of the tool.
Web
_____________ Is the consolidation of two materials by means of temperature and or pressure to cause the materials to melt or diffuse at the joint. It involves a coalescence of completely melted base and filler metals.
Welding
In CNC machine how are the primary linear axes designated
X, Y, Z
