Welding and Stuff Part A 51-100 Flashcards
Practical
Which metal properties are directly related:
A) Conductivity and strength
B) Strength and Ductility
C) Strength and Hardness
D) Ductility and Toughness
E) C and D
E) C and D
Which of the following is not a method used to eliminate or reduce residual stress:
A) Vibratory stress relief
B) External restraint
C) Thermal stress relief
D) Peening
E) Annealing
B) External restraint
*With respect to the rolling direction of steel plate manufacture, which statement is true:
A) The Strength is highest in the X direction
B) The Strength is highest in the Y direction
C) The Strength is lowest in the X direction
D) The Strength is lowest in the Y direction
E) The Strength is highest in the Z direction
A) The Strength is highest in the X direction
50 lb can of welding electrodes weighs how many kg?
A) 227 kg
B) 25 kg
C) 22.7 kg
D) 23000 kg
E) None of the above
C) 22.7 kg
A problem occuring in weldments caused by the non-uniform heating produced by the welding operation:
A) Porosity
B) Incomplete Fusion
C) Distortion
D) Slag Inclusions
E) None of the above
C) Distortion
A tensile specimen having a cross sectional area of .25 sq in breaks at a load of 15.250 lbs. What is the tensile strength? (Tensile Strength= Load/Area):
A) 3,813 psi
B) 61,000 psi
C) 6,100 psi
D) 58,500 psi
E) None of the above
B) 61,000 psi
Acetalyne becomes unstable above what pressure:
A) 5 psi
B) 10 psi
C) 15 psi
D) None of the above
C) 15 psi
Before starting a job assignment, the welding inspector should have an understanding:
A) What code, standard, or specification applies
B) What inspection should be conducted
C) When inspections should be conducted
D) Where records are maintained
E) All of the above
E) All of the above
Endurance limit is an expression used for what type of testing:
A) Fatigue
B) Hardness
C) Soundness
D) Tension
E) None of the above
A) Fatigue
For best results, a braze joint should have:
A) Clean joint surface
B) A small clearance between pieces being joined
C) A large surface area for the joint area
D) Heat source
E) All of the above
E) All of the above
For plain carbon steels, their approximate tensile strength can be estimated by multiplying their BHN by:
A) 300
B) 500
C) 200
D) 400
E) 100
B) 500
For the portion of a single bevel butt joint where the two pieces to be joined come closest together is:
A) Radius
B) Joint root
C) Bevel angle
D) Groove angle
E) None of the above
B) Joint root
How does brazing differ from welding:
A) No filler metal used
B) An oxyfuel flame is used
C) The base metal is not melted
D) All of the above
E) None of the above
C) The base metal is not melted
How many preheat flame cones will appear if the cutting tip has 7 orifices:
A) 6
B) 5
C) 4
D) 3
A) 6
Hydrogen in the molten weld metal can cause:
A) Undercut
B) Overlap
C) Cracking
D) Porosity
E) C and D
E) C and D
If you make 72 on Part A, 78 on Part B, and 70 on Part C (You must retake which part)
A) Part A
B) Part B
C) Part C
D) All of the above
C) Part C
In order for communications to be effective, it should for a “continuos loop”
True or False
True
In oxygen cutting operation, one of the major safety hazards is the danger of:
A) Falling objects
B) Sparks and hot metal
C) Electrical shock
D) Burning flux flames
B) Sparks and hot metal
Is typically used in the flat position unless a special apparatus is employed:
A) GMAW
B) SAW
C) FCAW
D) SMAW
E) GTAW
B) SAW
Lock, Tag, and Ty procedure should be completed before working on equipment where machinery guards have been removed.
True or False
True
Notch toughness and impact strength are not synonymous.
True or False
False
Some toxic materials the welder may be exposed to are:
A) Cadmium
B) Chromium
C) Nickel
D) Lead
E) All of the above
E) All of the above
Subarc and ESW processes are similar in that:
A) Both are arc welding processes
B) Both are shielding gases
C) Both use granular flux, which becomes molten
D) A and B
E) A and C
C) Both use granular flux, which becomes molten
The CWI exam contains 3 parts (Part A, B, and C)
True or False
True
The fillet weld break test is used to evaluate the:
A) Quality of the fractured weld
B) Ductility of the weld metal
C) Impact strength of the weld
D) Tensile strength of the base metal
E) None of the above
A) Quality of the fractured weld
The required spot weld size parameter can be shown as:
A) A dimension to the right of the symbol
B) A dimension of the required nugget diameter
C) A value for the required shear strength per spot
D) A or B
E) B or C
E) B or C
The term for the junction between the weld face and the base metal is:
A) Leg
B) Weld reinforcement
C) Toe
D) Root
E) Weld Edge
C) Toe
The type of weld applied to the opposite side of a joint before a single V-groove weld is completed on the near side of a joint is:
A) Melt-through weld
B) Backing weld
C) Back weld
D) Root weld
E) None of the above
B) Backing weld
The type of weld configuration formed when the length of a round bar is placed parallel against a flat surface is:
A) Double flare bevel groove
B) Single flare V groove
C) Edge flange
D) Corner flange
E) None of the above
A) Double flare bevel groove
The welding inspector is not concerned with the mechanical and chemical properties of metals.
True or False
False
The welding symbol shows the use of what type of completed weld:
A) Single bevel-groove weld with backing weld
B) Single bevel-groove weld with back weld
C) Single V-groove weld with backing weld
D) Single V-groove weld with back weld
E) None of the above
C) Single V-groove weld with backing weld
The yield strength of a material is determined by:
A) Impact testing
B) Tensile testing
C) Hardness testing
D) The offset method
E) B and D
E) B and D
There is an increasing need for weld quality because of:
A) Safety
B) Economics
C) Less conservative design
D) Government regulations
E) All of the above
E) All of the above
To successfully complete the CWI exam, individuals must pass all three parts with at least:
A) 70%
B) 72%
C) 75%
D) 78%
A) 70%
To successfully complete the CWI exam, individuals must pass all three parts with at least:
A) 70%
B) 72%
C) 75%
D) 78%
A) 70%
Very slow cooling of steel may result in the production of a soft, ductile microstructure which has a lamellar appearance when viewed under magnification. This structure is referred to as:
A) Martensite
B) Pearlite
C) Bainite
D) Ferrite
E) Cementite
B) Pearlite
Weld quality control should only begin after welding has been started.
True or False
False
Welding inspectors must often communicate with who:
A) Welders
B) Supervisors
C) Welding engineers
D) Members of management
E) All of the above
E) All of the above
What elements are required in a welding symbol?
A) Reference line
B) Weld symbol
C) Arrow
D) All of the above
E) A and C
E) A and C
What gases can be used with GMAW process:
A) Carbon dioxide
B) Argon-oxygen
C) Argon-carbon dioxide
D) Argon
E) All of the above
E) All of the above
What is the purpose of the coated electrodes for SMAW
A) Forms gas shield
B) Produces slag covering
C) Supplies filler metal
D) All of the above
D) All of the above
What protective equipment is not suitable for eye protection from welding radiation:
A) Welding helmet with filter plates
B) Clear safety glasses
C) Safety goggles with filter plates
D) Protective screens
E) Properly positioned barricades
B) Clear safety glasses
When 2 pieces to be joined lie in parallel planes and their edges overlap is called:
A) Lap
B) Edge
C) Butt
D) Corner
E) T
A) Lap
When entering confined spaces, a “standby” is not required just as long as someone knows where you are at.
True or False
False
Which alloying element is commonly added to steel to improve its corrosion resistance:
A) Carbon
B) Aluminum
C) Silicon
D) Chromium
E) None of the above
D) Chromium
Which of the following is not a method used to eliminate or reduce residual stress:
A) Vibratory stress relief
B) External restraint
C) Thermal stress relief
D) Peening
E) Annealing
B) External restraint
Which of the following is not considered a soundness test:
A) Fillet break
B) Root bend
C) Nick break
D) Face bend
E) Hardness
E) Hardness
Which of the following represents a potential hazard while brazing:
A) Fumes
B) Fluxes
C) Bright light
D) All of the above
D) All of the above
Which test is not considered a soundness test?
A) Fillet break
B) Root bend
C) Nick break
D) Face bend
E) Hardness
E) Hardness
You must have a high school diploma to become a CWI or you would be denied your certification.
True or False
False
