Welder MCQ Questions

Welder MCQ Questions

1-The arc welding transformer is a ___ transformer.

(A) Step up

(B) Step down

(C) One to one

(D) Increasing voltage


2-Shielded metal arc welding is classified under the process of ____ .

(A) Electric resistance welding

(B) Electric arc welding

(C) Special welding

(D) Electro slag welding


3-It is a resistance welding process in which roller type electrodes are used:

(A) Spot welding

(B) Seam welding

(C) Projection welding

(D) Flash butt welding


4-The flow of molten solder in the gap between the work pieces is driven by ____ force.

(A) Centrifugal

(B) Capillary

(C) Viscosity

(D) Wetting


5-Which one of the following is a resistance welding process?

(A) Spot welding

(B) Thermit welding

(C) Forge welding

(D) Explosive welding


6-Which of the following metal plates can not be joined by projection welding?

(A) Thin plates

(B) Copper plates

(C) Mild steel plates

(D) Stainless steel plates


7-The color code for identifying oxygen gas cylinder is

(A) Maroon

(B) Black

(C) Blue

(D) Red


8-In which position is Submerged Arc Welding is done?

(A) Flat and Horizontal

(B) Flat and Vertical

(C) Flat and Overhead

(D) Horizontal and Vertical


9-What is the purpose of copper coating on the mild steel filler wire?

(A) To heat faster

(B) To increase strength

(C) To avoid rusting

(D) For good appearance


10-Acetylene gas is dissolved in ____ liquid in cylinder.

(A) Water

(B) Acetone

(C) Calcium hydroxide

(D) Kerosene



1-(A), 2-(B), 3-(B), 4-(B), 5-(A), 6-(B), 7-(D), 8-(A), 9-(C), 10-(B)