If arc length is shortened, metal transferring across the gap may short out the electrode, causing it to ____.
A. produce excessive slag
B. stick to the plate
C. burn through the metal
D. produce excessive spatter
Answer: B
You might also like to view...
A quality-control program at a plastic bottle production line involves inspecting finished bottles for flaws such as microscopic holes. The proportion of bottles that actually have such a flaw is only 0.0002. If a bottle has a flaw, the probability is 0.995 that it will fail the inspection. If a bottle does not have a flaw, the probability is 0.99 that it will pass the inspection.
a. If a bottle fails inspection, what is the probability that it has a flaw? b. Which of the following is the more correct interpretation of the answer to part (a)? i. Most bottles that fail inspection do not have a flaw. ii. Most bottles that pass inspection do have a flaw. c. If a bottle passes inspection, what is the probability that it does not have a flaw? d. Which of the following is the more correct interpretation of the answer to part (c)? i. Most bottles that fail inspection do have a flaw. ii. Most bottles that pass inspection do not have a flaw. e. Explain why a small probability in part (a) is not a problem, so long as the probability in part (c) is large.
_________________________ has lower equipment and operating costs than other types of welding.
Fill in the blank(s) with the appropriate word(s).
When a purge-recovery unit runs to purge the air from the condenser of a low-pressure chiller, most of the refrigerant that is purged with the air is:
A) Released into the air. B) Released with the water. C) Reused as chiller fuel. D) Recovered and returned to the system.
A machine with leaf springs will also feature:
a. Suspension cylinders b. Coil springs c. Rubber blocks d. Spring shackles