Welding Metallurgy Quiz Questions & Answers Pdf - 1

Question: 1

In arc welding employing coated electrodes

(A) Coating melts first and then rod melts

(B) Rod melts first and then coating melts

(C) Both rod and coating melts simultaneously

(D) Which melts first depends on polarity

Question: 2

Chromium molybdenum steel is generally not welded using _____ welding.

(A) Resistance

(B) Thermit

(C) Oxy-acetylene

(D) Submerged arc

Question: 3

Out of the following, the material which is best weldable with itself is

(A) Aluminium

(B) Cast iron

(C) Stainless steel

(D) Mild steel

Question: 4

For welding stainless steel, copper or cast iron by inert gas arc welding, we use

(A) CO₂ and high speed

(B) Combustible electrode and argon in combination with A.C.

(C) Straight polarity direct current

(D) Non combustible electrode with helium and D.C.

Question: 5

TIG is especially useful in welding

(A) Aluminium

(B) Titanium

(C) Stainless steel

(D) Cast iron