1. . Before Aluminum Welding ……… is done.
(A) Preheating
(B) Cleaning
(C) Straightening
(D) All
2. . Aluminum is ……… of heat.
(A) Conductor
(B) Non Conductor
(C) Waste
(D) All
3. . For Aluminum welding ……… is used.
(A) Flux
(B) Metal
(C) Alloy
(D) None
4. . ……… saves welding joint from external effects.
(A) Flux
(B) Welding
(C) Metal
(D) Alloy
5. . Flux is made up of ………
(A) Potassium Fluoride
(B) Lithium Chloride
(C) Potassium Chloride
(D) All
6. . The primary purpose of weld flux is to prevent ……… of the base and filler materials.
(A) Neutralization
(B) Oxidation
(C) Reduction
(D) All
7. . In Aluminum welding, ……… technique is used.
(A) Backhand
(B) Forehand
(C) Flat
(D) Vertical
8. . A carburizing flame is also known as ………
(A) Oxidizing flame
(B) Reducing flame
(C) Neutral flame
(D) None
9. . The temperature of Carburizing flame is ………
(A) 5700ºF
(B) 5800ºF
(C) 5900ºF
(D) 5600ºF
10. . Preheating is the process applied to raise the temperature of the material to be welded ………. welding
(A) Before
(B) After
(C) Both
(D) None