A(n) ____ occurs when the flame burns back inside the tip, torch, hose, or regulator.
A. flashback
B. backfire
C. burn
D. overheating
Answer: A
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A solid black valve symbol usually indicates a _____ valve.
a. normally closed b. locked c. pressure relief d. normally open
Threads are either male or female. Female threads are internal and male threads are external.
Answer the following statement true (T) or false (F)
Technician A says that spark knock, ping, and detonation are different names for abnormal combustion. Technician B says that any abnormal combustion raises the temperature and pressure inside the combustion chamber and can cause severe engine damage. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
What is a typical air pressure regulator specification for the pneumatics on a RoadRanger compounded truck transmission?
A. 30 psi B. 60 psi C. 90 psi D. 120 psi