Which of the following is true of a flashback?
A. It produces a low whistle.
B. When it occurs, the fuel valve should be closed first, followed by the oxygen valve.
C. A flame is burning back inside the tip, torch, hose, or regulator.
D. The valves should be closed slowly.
Answer: C
You might also like to view...
Identify the following as dairy cattle, beef cattle, or swine breeds
a. dairy c. swine b. beef 18. Holstein 19. Angus 20. Hampshire 21. Duroc 22. Brown Swiss 23. Hereford 24. Brahman 25. Chester White 26. Jersey 27. Simmental
Which of the following NEC® sections provides the requirement for the concept that the requirements for grounding in Chapter 5 through Chapter 7 can modify or supplement the rules in Chapter 1 through Chapter 4?
A. 517.17 B. 250.118 C. 250.3 D. 90.3
Which of the following is not one of the Design Process Stages?
a. Problem identification b. Compromise solution c. Working drawings d. Digital database e. Prototypes
What is the difference between the analytical and experimental approaches to heat transfer? Discuss the advantages and disadvantages of each approach.
What will be an ideal response?