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 OPERATOR ADVNCED MACHINE TOOLS' And exam conducted in the year 2018. And Question paper code was '112/2018'. 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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The cause for this defect is the tool's cutting edge being blunt or getting blunt during its
travel and the carriage not being locked; which defect is this?
{A) Pip in centre (൫) Convex face
€) Concave face യ) Rough finish in turning
It is advisory that the tool to be used for finishing; the tool should have :
(A} Sharper nose
{B) Larger nose radius than normal
{C) Flat nose
യ Flat nose than normal
The recommended cutting speed for turning medium carbon steel is :
{A) 36 to 50 m/min (3) 301040 10/7
{C) 8015 85 ബ്ബ യ) 35 to 50 mm/min
When carbide tools are تت لوقي higher cutting speed than that of the HSS tools
may be chosen.
(4) 4tob times (3) 515 61165
{C) 1to2times യ 8154110165
Which component is used for turning lengthy hexagonal bars along with fixed steady rest?
(ಯ Angle plate {B) Mandrel
{C) Cat head {D) Magnetic chuck
The percentage of carbon in high carbon steel is :
&) 7 (8) 0.15t00.3
(0) 0.406 (D) None of these
Choose the correct factor about malleable cast iron :
(ക High brittle and low ductile ற Difficult for machining
{C) Cheaper than grey cast iron യ) No self-lubricating property
Which material is used mostly for making crane hooks?
வ Mild steel இ Wrought iron
€) Cast iron യ) Plain carbon steel
112/2018 6 A
