Which of the following is a correct statement regarding the selection and/or connection of shielding-gas
cylinders to the welding equipment?
a. The shielding gas selection is not important; all of the available gases do an equal job in all welding
applications.
b. Remove the cylinder?s protective cap, momentarily crack the cylinder valve open to blow out any dirt,
and then close it.
c. Install the regulator/flowmeter assembly first, then crack the cylinder valve open to blow out any dirt and
debris.
d. When using argon as a shielding gas, special precautions and respirators are required due to its toxicity.
b
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Oil soaked rags:
A) Can be a health hazard B) Should be stored in an approved safety can C) A, B, and D D) Can be a fire hazard
Technician A says that a high speed scopemeter can help technicians interpret hexadecimal code for troubleshooting purposes. Technician B says that a labscope may help to identify a non-communicating node (controller) on the bus. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
_____ hazards are caused by high concentrations of vapors, gases, or solids in the form of dust.
Fill in the blank(s) with the appropriate word(s).
The amount of pure lag of a controlled variable is determined by the __________.
A. capacity of the material from which the variable is made B. type of material from which the variable is made C. both a and b