BRAZING STUDY GUIDE 2026 TEST PAPER QUESTIONS AND SOLUTIONS GRADED A+

BRAZING STUDY GUIDE 2026 TEST PAPER
QUESTIONS AND SOLUTIONS GRADED A+

●● adjust to a carbonizing flame, from a neutral flame, by either;
_________ acetylene, or ________________ oxygen..
Answer: increase; decrease


●● a carburizing flame is used to perform ___________ operations..
Answer: silver brazing


●● the oxidizing flame is produced by burning an excess of ________..
Answer: oxygen


●● the inner cone of the oxidizing flame appears ____________ in
color..
Answer: purplish


●● a slightly oxidizing flame is used to perform __________________
operations.
Answer: braze weld


●● a backfire is a momentarily burning back of the flame into the
_________ ..

, Answer: torch tip


●● in a flashback, the flame burns in or beyond the torch ___________..
Answer: mixing chamber


●● a back fire is characterized by loud ____________________..
Answer: snap


●● a flashback is usually accompanied by a _____________ sound..
Answer: hissing


●● when flashback occurs, immediately shut off the torch
______________ needle valve; the close the torch _____________
valve..
Answer: oxygen ; acetylene


●● if backfire persists every time the torch is lighted check for: _______
tip, _________________ greater than that recommended for the tip
______________, loose ________________, or dirt torch tip
________________..
Answer: overhead, gas, pressure, size


●● heat always flows from a/an ______________ area to a/an
__________________ area.