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

Trades & Technology

You might also like to view...

What is induced magnetism? When is the magnetic field stronger?

What will be an ideal response?

Trades & Technology

T-budding is accomplished when the rootstock is in active growth rather than in the dormant (resting) stage, either in winter or late fall

Indicate whether the statement is true or false

Trades & Technology

Which of the following represents the 2's-complement of the hexadecimal number 2AF?

A) D50 B) E51 C) E50 D) D51

Trades & Technology

How does a liquid-line filter drier designed for heat pump use differ from a standard liquid-line filter drier?

A) Heat pump filter driers are manufactured from stainless steel. B) Heat pump filter driers are bidirectional. C) Heat pump filter driers have two inlets and two outlets to accommodate reverse refrigerant flow. D) Heat pump filter driers can withstand higher pressures.

Trades & Technology