Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Junior Instructor (Welder) - Industrial Training ' And exam conducted in the year 2021. And Question paper code was '070/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
070/21
9. Electron beam welding, the tungsten filament unit, electrons is heated in vacuum
chamber at
A) 1000°C B) 2000°C ©) 3000°C 0) 4000₹0
10. Laser beam welding is used in
A) Aircraft B) Ships C) Railways D) Body building
11. Which welding process is more suitable for joining dissimilar metals ?
A) GMAW B) GTAW
C) Friction welding D) Submerged arc welding
12. Which gas is used for TIG welding of aluminium ?
A) و00 B) Argon C) Oxygen D) Nitrogen
13. Which welding is generally recommended for pipe to pipe or tube to tube joint ?
A) GTAW/Gas B) GTAW/Arc ©) GTAW/CO, D) GTAW/TIG
14. Which gas have greater arc stability than with helium ?
A) و00 B) Argon C) Helium D) Hydrogen
15. In GTAW, the tungsten electrode fusion approximately at
A) 150050 B) 2230°C C) 3380°C D) 4500°C
16. In GTAW process, tungsten with 2% thorium electrode is marked with
A) Red colour B) Blue colour
C) Black colour D) Green colour
17. What is the purpose of high frequency unit in GTAW welding ?
A) To produce the arc
B) To cooling the torch
C) To cooling the nozzle
D) To initiate the arc without touching the electrode on the base metal
A -4-