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 'Tradesman (Diesel Mechanic)' And exam conducted in the year 2023. And Question paper code was '074/2023'. 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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074/23
What is the rake angle of cutting teeth in a normal type machine tap ?
A) 12 Degree B) 4 Degree
C) 20 Degree D) 2 Degree
What is the volumetric efficiency of a piston type motor ?
A) 85% B) 50% C) 75% D) 95%
Which material is used for making hand taps ?
A) High speed steel B) Medium carbon steel
C) Mild steel D) Brass
Name the law which states that the pressure exerted on liquid is transmitted equally
in all the directions.
A) Boyle’s law B) Pascal’s law
C) Archimedes principle D) Charles law
What is the energy conversion takes place in hydraulic pump ?
A) Mechanical energy to hydraulic energy
B) Thermal energy to hydraulic energy
C) Chemical energy to hydraulic energy
D) Gravitational energy to hydraulic energy
Which type of tap is used to finish the threads of a blind hole to the correct depth ?
A) Taper tap B) Intermediate tap
C) Plug tap D) Second tap
Major overhauling of marine diesel engine carried out
A) 6000 hours B) 5000 hours C) 4000 hours D) 2000 hours
In which type of cooling system of marine diesel engine Keel cooler is used ?
A) Direct cooling B) Indirect cooling
C) Thermosyphon cooling system D) Cooling system used by coolant
The intake and exhaust valves can be arranged various ways in engines. The most
common arrangement is
A) L—Head B) F—Head C) T-Head D) |—Head