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 Mechanical Agricultural Machinery' And exam conducted in the year 2021. And Question paper code was '063/2021'. 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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Flux is used soldering to
A) Remove the impurities present in solders
B) Fill up the gaps between the joints
C) Increase fluidity of solder metal
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D) Prevent formation of oxides
The working temperature range for soldering process is
A) 80°C to 120°C
B) 180°C to 250°C
C) 240°C to 320°C D) 280°C to 340°C
During the resistance welding process, the
A) During heating process
B)
C) After the weld cools
D)
As soon as the flow of current starts
Immediately after the current supply
In an arc-welding process, intense heat is
work piece due to
A) Contact resistance
C) High voltage
The commonly used flux for ferrous material
A) Borax
C) Zinc chloride
In galvanised pipes, galvanising is done on
A) Cast iron
C) Pig iron
A material that is to be extruded must poss:
A) Ductility
C) Malleability
pressure is released
developed between the electrode and
B) Time of current flow
D) High current
5 is
B) Alum
D) Potash
the following material
B) Mild steel
D) Wrought iron
B) Plasticity
D) Elasticity
ess the following property