1
GATE ME 1996
MCQ (More than One Correct Answer)
+1
-0.3
Preheating before welding is done to
A
Make the steel softer
B
Burn away oil, grease, etc., from the plate surface
C
Prevent cold cracks
D
Prevent plate distortion
2
GATE ME 1994
MCQ (Single Correct Answer)
+1
-0.3
The electrodes used in $$arc$$ welding are coated. This coating is not expected to
A
Provide protective atmosphere to weld
B
Stabilize the $$arc$$
C
Add alloying elements
D
Prevents electrode from contamination
3
GATE ME 1994
Fill in the Blanks
+1
-0
Generally cylindrical parts produced by powder metallurgy should not have non uniform cross section and a length to diameter ratio exceeding . . . . . . . . . . . . . . .
4
GATE ME 1994
Fill in the Blanks
+1
-0
The ratio of acetylene to oxygen is approximately ................ for neutral flame used in gas welding
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