A. Laser
B. Arc
C. Gas
D. Metal inert gas
Ans-: D
Q.2 In arc welding operations the current value is decided by ___.
A. Size of the electrode
B. Thickness of electrode
C. Thickness of plate
D. Voltage across the arc
Ans-: A
Q.3 In thermit welding, the iron oxide and aluminium oxide are mixed in the proportion of __.
A. 2 : 1
B. 1 : 1
C. 3 : 1
D. 1 : 2
Ans-: C
Q.4 in the arc welding process, the following order of temperature may be generated ?
A. 1000° C
B. 5500° C
C. 15000 ° C
D. 8000 ° C
Ans-: B
Q.5 In arc welding, the arc length should be equal to the _____.
A. Diameter of electrode rod
B. Rod diameter
C. Twice the rod diameter
D. None of the above
Ans-: B
Q.6 In which welding process, the electrode gets consumed ?
A. Resistance
B. Friction
C. Arc
D. Gas
Ans-: C
Q.7 The strength of properly welded joint as compared to base metal would be ?
A. More
B. Less
C. Same
D. None of the above
Ans-: A
Q.8 In which welding process, arc blow occurs
A. Arc welding
B. Gas welding
C. Friction welding
D. Resistance welding
Ans-: A
Q.9 Metal deposited on to the workpiece from the electrode is ______.
A. Falls because of gravity
B. Attracted due to electromagnetic action
C. Forced across the arc
D. None of the above
Ans-: C
Q.10 In the mannual tungsten inert gas welding, the angle of the electrode holder with the direction of welding is ____.
A. 30°
B. 45°
C. 70°
D. 180°
Ans-: C
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