It is important to clean dross and carbon deposits from a cut surface before welding because they can _____
a. produce extremely hazardous fumes during welding
b. form hard, brittle zones and porosity in the weld zone
c. damage certain welding equipment components
d. cause molten metal to be blown considerable distances
b
You might also like to view...
Define and give a use for countersink.
What will be an ideal response?
What are the eight types of asexual propagation?
What will be an ideal response?
Why should technicians fill out paper work completely and correctly?
a. It’s required and the tech will be fired if he doesn’t. b. Customers need a complete record of what was done in case it breaks down. c. It is the most efficient method of communication between the job and the office.
When the oil pressure drops to between 3 and 7 psi, the oil pressure lamp lights by ________
A) Conducting current to dash lamp by oil B) Opening the circuit C) Grounding the circuit D) Shorting the circuit