1000+ Welding MCQ Questions and Answers Pdf - 2

Question: 6

Steel rails are welded by

(A) argon arc welding

(B) resistance welding

(C) thermit welding

(D) gas welding

Question: 7

A rectifier for welding has voltage/current characteristic as

(A) rising

(B) drooping

(C) variable

(D) static

Question: 8

Which of the following electrodes will have least diameter?

(A) 4 SWG

(B) 14 SWG

(C) 16 SWG

(D) 20 SWG

Question: 9

The metal surfaces, for electrical resistance welding must be

(A) rough

(B) moistened

(C) lubricated

(D) cleaned

Question: 10

Which of the following equipment is generally used for arc welding?

(A) transformer

(B) single phase alternator

(C) two phase alternator

(D) three phase alternator