Kerala PSC Previous Years Question Paper & Answer
Page:14
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
86.
87.
88.
89.
90.
91.
92.
93.
Which flame is suitable for brass welding ?
A) Slightly neutral flame B) Carburizing flame
C) Neutral flame D) Oxidizing flame
The divergence allowance for gas welding of 300 mm long copper butt joint is
A) 1 to2mm B) 3to4mm
©) 4to5mm D) 5to6mm
Which kind of welding process can be joint by dissimilar metals ?
A) Bronze welding of copper B) Bronze welding of cast iron
C) Bronze welding of brass D) Bronze welding of mild steel
Melting point of aluminium oxide is
A) 500°C B) 659°C
C) 850°C D) 1930°C
Which of the following nozzle size is selected for 3 mm thickness aluminium and its
alloy ?
A) 3 B) 5 C)7 D) 9
Comparing to welding electrode, gouging electrode needs
A) 5 - 10% current 8) 10 - 20% higher current
©) 10 - 30% lower current D) 20 - 50% higher current
Which type of cast iron is very hard and brittle and is not weldable, and also not easily
machinable ?
A) Nodular cast iron B) Malleable cast iron
C) Gray cast iron D) White cast iron
The cast iron material has often post-heating which kind of cooling to be done ?
A) Oil B) Air
C) Sand D) Water
-14-