Mech Eng 2653 Test #2
The applied forces in wire drawing are: A. Compression B. Tension
Tension
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? The depth to width ratio is: A. Low (<1) B. About 1:1 C. High (>1)
About 1:1
When you have a three-part flame in OAW, you probably have too much: A. Oxygen B. Acetylene
Acetylene
Resin or filler material is polymerized to create a bond. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Adhesive Bonding
Additive manufacturing is being used for: A. Prototype manufacture B. Direct product manufacture C. Manufacture of rapid tooling D. All of these
All of these
Ink-jet deposition can build with; A. Wax B. Thermoplastic polymer C. Low-melting point metal D. All of these
All of these
Possible types of rapid tooling include: A. Jigs, fixtures, templates, and gages B. Patterns, molds, and cores C. Die casting dies D. all of these
All of these
Prototype products are used to: A. Assess form, fit, and function B. Evaluate possible concepts C. Provide a visual aid D. All of these
All of these
The "Perfect Metallurgical Bond" requires surfaces that are: A. Perfectly flat B. Perfectly clean C. Perfectly aligned D. All of these
All of these
An attractive feature of electron beam melting is: A. Able to produce fully-dense metal products B. Can work with reactive metals, like titanium C. Can work with high-temperature metals, like tool steels and superalloys D. All of these are attractive features
All of these are attractive features
The heat source for fusion welding can be: A. Gas combustion B. A laser beam C. An electric arc D. Any of the above
Any of the above
We can join ceramics to one another or join metals to ceramics by all of the following EXCEPT: A. Adhesive bonding B. Brazing C. Diffusion bonding D. Any of the deformation bonding processes
Any of the deformation bonding processes
The molten pool and hot metal of a fusion weld can be "protected" by: A. A vacuum B. Shielding gas C. A cover slag D. Any of these
Any of these
The forces required for diffusion bonding: A. Are only what is necessary to establish and maintain firm contact B. Must be great enough to induce plastic deformation
Are only what is necessary to establish and maintain firm contact
In resistance spot welding, we want the greatest electrical resistance to be: A. In the electrodes B. At the electrode-workpiece interfaces C. In the metal being joined D. At the interface between the metals being joined
At the inerface between the metals being joined
During cold forming, as deformation progresses, the material: A. Becomes weaker and more ductile B. Becomes stronger and more brittle C. Remains unchanged
Becomes stronger and more brittle
The temperature for diffusion bonding is ______ the melting point of the material being joined. A. Above B. Below
Below
To keep from burning holes in a thin sheet during arc welding (we want the shallowest penetration of the fusion zone), we would select this shielding gas A. Helium B. Argon C. Carbon Dioxide
Carbon Dioxide
The applied forces in extrusion are: A. Compression B. Tension
Compression
Additive or direct-digital processing begins with a: A. Computer file B. Part pattern C. Rigid die or tooling
Computer file
Low-angle wire drawing dies are often inefficient due to excessive: A. Contact friction B. Internal shear
Contact friction
If a flaw or defect is oriented parallel to stressed surface, it has the form of a: A. Crack initiator B. Crack propagator C. Crack arrestor
Crack arrestor
The chemistry (or composition) of the filler metal used for brazing and soldering is ____ that of the materials being joined. A. The same as B. Different from
Different from
If the hold-down pressure is too high in deep drawing, we will likely produce: A. Wrinkling of the side wall B. Tearing
Tearing
Adhesive bonding can be used to bond: A. Only similar materials to one another B. Virtually anything to anything
Virtually anything to anything
To produce a significant change in cross-sectional area using the extrusion process: A. We can use a single die B. We will need multiple dies and multiple passes
We can use a single die
To produce a significant change in cross-sectional area using the wire drawing process: A. We can use a single die B. We will need multiple dies and multiple passes
We will need multiple dies and multiple passes
No slag forms, so slag removal is not required. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
GMAW
Only a shielding gas is used for protection. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
GMAW
The widest variety of both ferrous and nonferrous metals can be welded A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
GMAW
This process is also TIG welding for Tungsten Inert gas. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
GTAW
Welds made with this medium rate of heat input process have a 1:1 depth/width. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
GTAW
When helium gas is used for shielding, this process has been called "Heliarc" welding. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
GTAW
These two processes use non-melting tungsten electrodes. A. OAW & EBW B. GTAW & OAW C. GTAW & PAW D. GTAW & EBW
GTAW & PAW
If we are producing a large part that requires a considerable amount of deformation, we would prefer to do the forming process at a _____ temperature. A. High B. Low
High
Resistance spot welding welding has a ___ rate of heat input. A. Low B. Medium C. High
High
To produce spray transfer, we would want to use ___ voltage and current and ___ gas. A. Low, CO2 B. High, CO2 C. Low, argon D. High, argon
High, argon
In all metal forming processes, the applied stresses must be ____ than the yield strength of the material. A. Higher B. Lower
Higher
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? The rate of heat input is: A. Low B. Medium C. High
Medium
The Fused Deposition Modeling process bears similarly to : A. A hot melt glue gun B. A ink-jet printer
A hot melt glue gun
In the 3-D Printing process the scanning ink-jet is depositing: A. Molten build material B. A liquid binder that joins the powder particles
A liquid binder that joins the powder particles
In stereolithography process, a layer is cured by ___. In the solid ground curing process, the layer is cured by ____. A. A scanning UV laser; a single shot of UV light B. A single shot of UV light; A scanning UV laser
A scanning UV laser; A single shot of UV light
The joint clearance (at the temperature of the braze) should be on the order of ____ to obtain a high strength join in brazing or soldering. A. .3 in B. .03 in C. .003 in
.003 in
Because a fusion weld is actually a mini-casting, one might expect the possibility of: A. Shrinkage B. Gas porosity C. Both of these
Both of these
Direct metal deposition and laser engineered net shaping both use: A. A laser B. A stream of powder particles C. Both of these
Both of these
Brazing can be used to join: A. Only similar or identical materials B. Both similar and dissimilar materials, even metals to ceramics
Both similar and dissimilar materials, even metals to ceramics.
Capillary action draws melted filler metal into the joint. The materials being joined do not melt. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Brazing and Soldering
The primary difference between brazing and soldering is: A. Brazing is performed at higher temperatures than soldering B. Soldering is performed at higher temperatures than brazing
Brazing is performed at higher temperatures than soldering
Additive manufacturing builds parts: A. By joining block segments B. Building layer-by-layer
Building layer by layer
The forging process that produces complex shaped parts to near-net shape is: A. Open-die forging B. Closed die forging
Closed die forging
Foil is most likely rolled on this type of mill: A. 2-high B. 4-high C. Cluster D. 3-high
Cluster
A noticeable dent or impression is produced at the where two pieces of sheet are being joined. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Cold indentation welding
Less weld distortion occurs when the fusion zone is: A. shallow and wide B. Deep and narrow C. Deep and wide
Deep and narrow
The most desirable fusion zone profile would be: A. Shallow and wide B. Deep and narrow C. Deep and wide
Deep and narrow
Which of the following processes does NOT produce a product with constant cross-section shape? A. Wire drawing B. Extrusion C. Rolling D. Deep drawing
Deep drawing
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Shallow penetration B. Deep penetration
Deep penetration
Materials are squeezed together under pressure, resulting in plastic deformation and the creation of uncontaminated surfaces. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Deformation Bonding
A solid-state bond is formed by holding materials in contact for long period of time at elevated temperature. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Diffusion Bonding
Brazing and soldering can be used to join: A. Only similar metals B. Dissimilar metals and even dissimilar materials
Dissimilar metals and even be dissimilar materials
Because of the extreme depth-to-width, this process requires the most precise fit-up or alignment of the pieces being joined. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
EBW
Can produce welds with a depth-to-width ratio as high as 25:1. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
EBW
Since it requires a vacuum, high voltage, X-ray shielding, etc, this is probably the most expensive of the processes listed above. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
EBW
Voltage as high as 100,000 volts are employed. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
EBW
When the forces of deformation are compressive, the deformation should be performed: A. Cold B. Hot C. Either hot or cold is acceptable
Either hot or cold is acceptable
The temperature required for diffusion bonding two materials is: A. Room temperature B. Elevated, but below the melting point of either material C. Above the melting point of either material
Elevated, but below the melting point of either material
The temperature required for diffusion bonding two materials is: A. Room temperatures B. Elevated, but below the melting point of either material C. Above the melting point of either material
Elevated, but below the melting point of either material
A unique characteristic of a good bond is a wavy interface between the two base metals. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Explosive welding
Extremely large sheets of material can be welded to one another by this process. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Explosive welding
Impurities are stripped from the surfaces to be joined by a venting jet of gas. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Explosive welding
Brazing requires lower temperatures than soldering. True or False?
False
Direct digital manufacturing can only be used to produce parts from plastics and polymeric materials. True or False?
False
The materials being joined must be brittle for deformation bonding process. True or False?
False
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Fast cooling of the weld B. Slow cooling of the weld
Fast cooling of the weld
The flux is on the inside of a tubular consumable metal electrode. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
Flux cored Arc Welding
Of the two rational welding processes, this one produces the larger HAZ. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Friction welding
Since the joint material is a mix of the two materials being joined plus possible filler material, all compositions must be similar. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Fusion Welding
Portions of the material being joined melts and flows as liquid (along with possible filler metal) to fill the joint. A. Deformation Bonding B. Adhesive Bonding C. Fusion welding D. Diffusion Bonding E. Brazing and Soldering
Fusion welding
The portion of a weldment that melts during the joining process is called the: A. Fusion zone B. Heat-affected zone C. Unaffected base metal
Fusion zone
Is sometimes referred to as MIG (metal inert gas) welding. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
GMAW
Because the fusion zone normally solidifies quite rapidly, the fusion zone will typically have ___ strength. A "good" weld will normally break in the ____ zone. A. Poor; Fusion B. Poor; Heat affected C. Good; Fusion D. Good; Heat affected
Good; Heat affected
The maximum strength of a brazed joint is: A. About half the strength of the filler material B. Equal to the strength of the filler metal C. Greater than the strength of the filler metal
Greater than the strength of the filler metal
To minimize cracking, it is best if the materials being welded: A. Have little restraint B. Are highly restrained
Have little restraint
It is best if we can minimize the size of this region: A. Fusion zone B. Heat affected zone C. Unaffected base metal
Heat affected zone
The region of a weldment that is not melted, but has been heated above some critical temperature that causes a change in the structure and/or properties of the material is called the: A. Fusion zone B. Heat-affected zone C. Unaffected zone
Heat-affected zone
The hottest arc would be obtained with this shielding gas. A. Argon B. Helium C. Carbon Dioxide
Helium
The "Perfect Metallurgical Bond is: A. Easy to achieve B. Achievable depending on the base material C. Impossible to achieve
Impossible to achieve
The form of extrusion that has the best mechanical efficiency, since it eliminates billet-chamber friction, is: A. Direct extrusion B. Indirect extrusion
Indirect extrusion
Because a heavy spinning flywheel is used as the energy source in this process, very reproducible welds result. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Inertia welding
A non-reflective surface treatment may be required as preparation for welding. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
LBW
The heat source can be manipulated and positioned by mirrors. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
LBW
The high rate of heat input for this process produces welds with a 5:1 depth/width. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
LBW
Solid sheets of material are bonded in: A. Laminated object manufacturing B. Direct metal decomposition
Laminated object manufacturing
In brazing or soldering, the strength of the filler metal is ____ the strength of the material being joined A. The same as B. Greater than C. Less than
Less than
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. High distortion B. Low distortion
Low distortion
The time required to produce a diffusion bond is typically on the order of: A. Seconds B. Minutes or hours C. Days or months
Minutes or hours
Diffusion bonding can be used to join: A. Only similar metals B. Only ceramics C. Only metals, but the metals can be dissimilar D. Most combinations of metals and/or ceramics
Most combinations of metals and/or ceramics
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Wide weld B. Narrow weld
Narrow weld
In an electric arc, the ionized shielding gas atoms are attracted to the: A. Positive pole B. Negative pole
Negative pole
Resistance welding is: A. Good for joining thick plates because of the high rate of heat input B. An excellent process for joining ceramic materials to one another C. Normally used to join thin sheets to one another
Normally used to join thin sheets to one another
It is the most portable of all welding techniques. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
OAW
Operating conditions can be adjusted to be carburizing, oxidizing, or neutral. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
OAW
The low rate of heat input produces a large heat affected zone. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
OAW
The molten metal weld pool is very shallow (depth-to-width of about 1:3. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
OAW
Metal deformation processes can be used to shape: A. All materials B. Metals and ceramics C. Only ductile materials
Only ductile materials
The deformation bonding processes can be used to join: A. All metals B. All metals and ceramics C. Only ductile metals
Only ductile metals
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? Can be used to join: A. Only similar materials B. Both similar and dissimilar materials
Only similar materials
Compared to fusion welding, in brazing and soldering operations; A. Only the material being joined melts B. Only the filler melts C. Both melt
Only the filler melts
The blacksmith's hammer and anvil is actually a crude form of: A. Open-die forging B. Closed die forging
Open die forging
A "keyhole" can be produced, assuring complete penetration with minimum distortion. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
Has the smallest heat affected zone of the arc welding processes. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
The arc can be as long as 1-inch without going out. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
The heat of the arc is most highly concentrated in this arc welding process: A. SMAW B. PAW C. GTAW D. GMAW
PAW
The high rate of input results is a fusion zone with a depth-to-width of about 3:1. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
The two modes of operation are transferred arc and nontransferred arc. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
This process requires two separate flows of gas (an orifice gas and a shielding gas). A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
PAW
In the stereolithography process, the build material is: A. Metal powder B. Photocurable polymer C. Molten plastic
Photocurable polymer
The orifice gas pressure is highest to produce: A. Conventional melt-in PAW B. Keyhole welding with PAW C. Plasma cutting
Plasma cutting
Backup rolls are used to: A. Keep the width constant B. Produce uniform thickness C. Eliminate friction
Produce uniform thickness
Crowning of rolls is done to: A. Keep the width constant B. Produce uniform thickness C. Eliminate Friction
Produce uniform thickness
Electrons leave the workpiece surface and hot ionized gas atoms or molecules strike the workpiece surface during: A. SPDC (straight polarity) or DCEN B. RPDC (reverse polarity) or DCEP C. AC
RPDC (reverse polarity) or DCEP
High currents are generally required, often in excess of 10,000 amps. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
RSW
The electrode comes into direct contact with the workpiece, and some degree of force is applied. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
RSW
This process does not require any form of external "protection", since the weld location is fully isolated from any undesirable environment. A. Gas Tungsten Arc Welding (GTAW) B. Plasma Arc Welding (PAW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Laser Welding (LBW) F. Resistance Spot Welding (RSW)
RSW
In the selective laser sintering process, the unfused powder: A. Is vacuumed away between each layer B. Remains in place to serve as support
Remains in place to serve as a support
During hot forming, the strength of the material: A. Increases B. Decreases C. Remains unchanged
Remains unchanged
The primary role of of the flux in brazing or soldering is to: A. Remove oxides and other impurities (ex clean the base metal surfaces) B. Reduce the melting temperature of the filler metal C. Reduce the melting temperature of the material being joined
Remove oxides and other impurities
The product is a layered sheet or plate material, like the "sandwich" stock for US quarters. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Roll bonding
An example of a process where tool-workpiece friction is helpful is: A. Rolling B. Forging C. Extrusion D. Deep drawing
Rolling
Wire drawing and deep drawing are almost always performed at ____ temperature. A. Room B. Elevated
Room
Has the largest fusion zone area. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SAW
Overhead of vertical welding cannot be performed. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SAW
Since it has the deepest penetration it can join thick pieces of steel in a single welding pass A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SAW
Because it is limited to the lowest currents, it has the slowest deposition rate and shallowest penetration. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
Finite length "stick" electrodes are used. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
Requires the least expensive equipment. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
The flux is a coating on the outside of the electrode. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
This process is NOT continuous- (frequently interrupted to change electrodes). A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
To minimize hydrogen (moisture) pick-up, special electrode storage may be required. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
SMAW
The pressure applied in diffusion bonding: A. Simply creates firm elastic contact B. Must be sufficient to induce plastic deformation
Simply creates firm elastic contact
Because of the high rate of heat input, electron beam welding has a very ____ HAZ. A. Small B. Large
Small
To produce thin sheet (such as foil), we need to use ___ diameter contact rolls. A. Large B. Small
Small
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Small cross-section area B. Large cross section area
Small cross section area
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Small heat affected zone B. large heat affected zone
Small heat affected zone
This type of metal transfer is generally preferred when welding thin material: A. Globular B. .Spray C. Short circuit
Spray
The quick freezing of the fusion zone usually results in the creation of: A. Weak metal B. Strong metal
Strong metal
If a material exhibits seed sensitivity, as speed increases, it will become: A. Weaker and more ductile B. Stronger and more brittle
Stronger and more brittle
The arc is buried beneath a layer of flux and is not visible to observers. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
Submerged Arc Welding
Has the highest welding currents of the consumable electrode processes. A. Shield Metal Arc Welding (SMAW) B. Gas Metal Arc Welding (GMAW) C. Flux cored Arc Welding (FCAW) D. Submerged Arc Welding (SAW)
Submerged arc welding
What is the basis of your answers to question 10? A. The basic design of a lap joint B. The lower strength of the filler metal C. The "thin specimen effect"
The "thin specimen effect"
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? Employs an electrode that is of: A. A different chemistry as that being welded B. The same material being welded
The same material being welded
The answer to question 7 actually corresponds to: A. The smallest gap where capillary action can pull in liquid B. The largest gap where capillary action still pulls in liquid
The smallest gap where capillary action can pull in liquid
Because of the low rate of heat input, oxyacetylene welding is best suited to the joining of: A. Thick Steel B. Thin steel C. Al and Cu D. All of these
Thin steel
Arc length is defined as the distance from the : A. tip of the electrode to the surface of the workpiece B. top of the workpiece to the bottom of the fusion zone
Tip of the electrode to the surface of the workpiece
The hottest location in an oxyacetylene flame is at the: A. Tip of the torch B.Tip of the inner cone C. Tip of the outer envelope
Tip of the inner cone
Penetration is defined as the distance from the: A. Tip of the electrode to the surface of the workpiece B. Top of the workpiece to the bottom of the fusion zone
Top of the workpiece to the bottom of the fusion zone
Direct digital manufacture is attractive for small quantity production or even one of a kind products. True or False?
True
Hollow investment casting patterns collapse inward when melted, eliminating the possibility of ceramic shell or mold cracking. True or False?
True
MS&T has a very active program in additive processing or direct-digital manufacturing. True or False?
True
With direct digital manufacturing it is easy to make a change in a part after the design has been set or multi-part production run as been started. True or False?
True
With direct digital manufacturing there is no penalty for added part complexity. True or False?
True
A high-frequency oscillation is used to break up surface contaminants and bond thin sheets of metal. A. Cold indentation welding B. Friction welding C. Roll bonding D. Inertia welding E. Ultrasonic welding F. Explosive welding
Ultrasonic welding
The thickness of a rolled sheet or plate can be made more uniform by all BUT: A. Crowning the rolls B. Use back up rolls C. Apply front and back tensions D. Use smaller diameter rolls
Use smaller diameter rolls
The least desirable transfer mode is: A. Spray B. Globular C. Short circuit
short circuit