Shop Safety
What is the primary purpose of wearing a welding helmet?
A) To protect your eyes and face from sparks
B) To shield your hair from heat
C) To improve your visibility while welding
D) To keep you comfortable in hot conditions
A) To protect your eyes and face from sparks
What is the standard unit of measurement for length on a blueprint?
A) Inches
B) Meters
C) Centimeters
D) Feet
A) Inches
What is the primary function of the flux coating on an SMAW electrode?
A) To provide a clean surface for welding
B) To shield the weld from contamination and protect it from oxidation
C) To increase the speed of welding
D) To conduct electricity
B) To shield the weld from contamination and protect it from oxidation
What is the primary difference between GMAW and SMAW welding?
A) GMAW uses a consumable electrode, while SMAW uses a non-consumable electrode
B) GMAW requires a shielding gas, while SMAW uses flux coating for protection
C) GMAW is used for heavier materials, while SMAW is used for thin materials
D) GMAW involves a manual process, while SMAW is automated
B) GMAW requires a shielding gas, while SMAW uses flux coating for protection
Which wire color when working with electricity is always hot?
Red and Black
Which color is commonly used to label fire extinguishers in the shop?
A) Red
B) Blue
C) Green
D) Yellow
A) Red
What tool is typically used to measure the length of materials in a shop?
A) Protractor
B) Caliper
C) Tape measure
D) Square
C) Tape measure
Which of the following is a common material used as a filler rod in SMAW?
A) Aluminum
B) Copper
C) Steel
D) Magnesium
C) Steel
In GMAW, what is the purpose of the shielding gas?
A) To cool the electrode
B) To protect the weld from contamination and oxidation
C) To increase the speed of the welding process
D) To enhance the appearance of the weld
B) To protect the weld from contamination and oxidation
What is the unit of measurement for electrical current?
A) Ohms
B) Watts
C) Amperes
D) Volts
C) Amperes
What is the correct way to lift a heavy object in the shop?
A) Bend at the waist and lift with your back
B) Bend your knees and lift with your legs
C) Pull the object towards you while standing upright
D) Use only your arms and avoid bending
B) Bend your knees and lift with your legs
In blueprints, what does the term "scale" refer to?
A) The ratio of the drawing's dimensions to the actual size
B) The color code used for materials
C) The thickness of the lines
D) The angle of the design
A) The ratio of the drawing's dimensions to the actual size
In SMAW, what does the term "arc length" refer to?
A) The distance between the two electrodes
B) The distance between the electrode and the workpiece
C) The width of the weld bead
D) The length of the welding rod
B) The distance between the electrode and the workpiece
Which of the following is a common shielding gas used in GMAW?
A) Carbon dioxide (CO2)
B) Oxygen
C) Nitrogen
D) Hydrogen
A) Carbon dioxide (CO2)
What does the term "voltage" refer to in an electrical circuit?
A) The amount of electrical energy used per second
B) The force that pushes electric charges through a conductor
C) The amount of current flowing through the circuit
D) The resistance to the flow of electricity
B) The force that pushes electric charges through a conductor
What type of footwear is required in a welding shop?
A) Sneakers with rubber soles
B) Steel-toed boots
C) Open-toed sandals
D) High-heeled shoes
B) Steel-toed boots
When reading a blueprint, what does a dashed line typically represent?
A) An electrical connection
B) A hidden or invisible feature
C) A structural load-bearing element
D) A material that has been painted
B) A hidden or invisible feature
What type of electrode is typically used for welding mild steel in SMAW?
A) E7018
B) E6010
C) E308L
D) E4040
A) E7018
What type of electrode wire is commonly used in GMAW for welding mild steel?
A) ER70S-6
B) ER308L
C) ER5356
D) ER4043
A) ER70S-6
Which of the following materials is a good conductor of electricity?
A) Wood
B) Plastic
C) Copper
D) Rubber
C) Copper
What should you do if a welding machine has frayed or damaged cords?
A) Use it cautiously until it can be repaired
B) Wrap the cords with electrical tape
C) Notify the instructor and avoid using it
D) Continue using it as long as it still works
C) Notify the instructor and avoid using it
Which of the following tools is used to measure the precise internal dimensions of an object?
A) Vernier caliper
B) Ruler
C) Compass
D) Micrometer
A) Vernier caliper
Which of the following is NOT a potential hazard when performing SMAW?
A) Electric shock
B) UV radiation
C) Intense heat
D) Low levels of carbon monoxide
D) Low levels of carbon monoxide
Which of the following is a typical disadvantage of using CO2 as a shielding gas in GMAW?
A) It produces a high level of spatter
B) It creates excessive heat in the welding area
C) It requires a longer arc length
D) It is more expensive than other gases
A) It produces a high level of spatter
What is the function of a circuit breaker in an electrical system?
A) To increase the voltage in the circuit
B) To convert alternating current (AC) to direct current (DC)
C) To interrupt the flow of current if the circuit is overloaded
D) To store electrical energy for later use
C) To interrupt the flow of current if the circuit is overloaded