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.
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070/21
Which electrode is used to root pass welding of high pressure pipes ?
A) Rutile 8) Iron powder C) Basic coated D) Cellulosic
In which substance coated electrode can be used AC/DC reverse polarity ?
A) Silicon B) Copper C) Titanium D) Manganese
Cast iron welded after performing the pre-heating range of temperature is
A) 200°C - 210°C 8) 180°C - 200°C
C) 150°C 18050 0) 250°C - 300°C
In which polarity, low hydrogen electrode is used ?
A) AC straight B) AC reverse C) DC reverse D) DC straight
In 3 mm thickness of high carbon steel, which diameter of filler rod can be used ?
A) 1.6 mm diameter B) 2.00 mm diameter
C) 2.5 mm diameter 0) 3 mm diameter
Which alloying element increases hardness and toughness ?
A) Vanadium B) Tungsten
C) Chromium D) Manganese
The major problem in welding stainless steel is
A) High electrical resistance
B) Poor electrical resistance
C) Poor thermal conduction
D) Formation of chromium carbide
Which type of filler rod is to be selected to avoid weld decay in stainless steel welding ?
A) Columbium based
B) Phosphur bronze
C) Super silicon based
D) Copper coated mild steel
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