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

Ans: B

Rod melts first and then coating melts

Question: 2

Chromium molybdenum steel is generally not welded using _____ welding.

(A) Resistance

(B) Thermit

(C) Oxy-acetylene

(D) Submerged arc

Ans: A


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

Ans: 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.

Ans: C

Straight polarity direct current

Question: 5

TIG is especially useful in welding

(A) Aluminium

(B) Titanium

(C) Stainless steel

(D) Cast iron

Ans: A


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