MCQ on Metal Inert Gas (MIG) Welding. Multiple Choice Questions on GMAW. Multiple Choice Questions with Answers on Gas Metal Arc Welding.
1- Metal Inert Gas (MIG) welding is also known as
(A) Gas metal arc welding (GMAW)
(B) Metal active gas (MAG)
(C) Both (A) and (B)
(D) GTAW
2- The primary method(s) of metal transfer in GMAW, is (are)
(A) globular
(B) short circuiting
(C) pulsed spray
(D) all of the above
3- Metal Inert Gas (MIG) welding is extensively used in
(A) sheet metal industry
(B) automobile industry
(C) both (A) and (B)
(D) none of the above
4- Which of the following types of electrode is used in Metal Inert Gas (MIG) welding?
(A) consumable
(B) non-consumable
(C) both (A) and (B)
(D) none of the above
5- The contact tip in MIG welding, normally made of
(A) Iron
(B) Aluminium
(C) Copper
(D) Any of the above
6- The cooling medium used in electrode holder, is
(A) compressed air
(B) water
(C) compressed air or water
(D) oil
7- In Metal Inert Gas (MIG) welding
(A) direct current is employed
(B) electrode is generally positively charged
(C) a constant voltage supply is used
(D) all of the above
8- Shielding gases are necessary for gas metal arc welding to protect the welding area from
(A) oxygen
(B) nitrogen
(C) both (A) and (B)
(D) helium
9- The shielding gas(es) used in Metal Inert Gas (MIG) welding is (are)
(A) Argon
(B) Helium
(C) Carbon Di-oxide
(D) All of the above
10- The most prevalent quality problem(s) in TIG welding, is (are)
(A) dross
(B) porosity
(C) both (A) and (B)
(D) none of the above
11- Which of the following metal transfer method(s) is often limited to flat and horizontal welding positions
(A) Globular
(B) Short-circuiting
(C) Spray
(D) Cold metal transfer
12- Spray transfer is well-suited to welding ___ while employing an inert shielding gas.
(A) aluminium
(B) stainless steel
(C) aluminium and stainless steel
(D) tungsten
ANSWERS:
1-(C), 2-(D), 3-(C), 4-(A), 5-(C), 6-(C), 7-(D), 8-(C), 9-(D), 10-(C), 11-(C), 12-(C)