Kerala PSC AMVI Previous Year Question Paper 2026

Practising Kerala PSC AMVI previous year question papers is essential for effective Kerala PSC AMVI exam preparation. It helps candidates understand the Kerala PSC exam pattern, question trends and difficulty level set by the Kerala Public Service Commission. With the Kerala PSC AMVI notification 2026 expected in April 2026, regular practice improves accuracy and confidence.

Kerala PSC AMVI Previous Year Papers Questions (Most Repeated)

1. The viscosity of liquids decreases with increase in temperature due to 

(A) Decreased cohesive forces 

(B) Increased cohesive forces 

(C) Decreased molecular momentum transfer 

(D) Increased molecular momentum transfer 

2. In Newtonian fluids, the shear stress is 

(A) directly proportional to the viscosity 

(B) inversely proportional to the viscosity 

(C) directly proportional to the deformation rate 

(D) directly proportional to the shear strain 

3. The correct statement is 

(A) Fire point is higher than the flash point 

(B) Fire point is lower than the flash point 

(C) There is no relation between Fire point and the flash point 

(D) Sometimes Fire point is higher and some time is Flash point 

4. In a centrifugal pump the liquid enters the pump 

(A) at the centre 

(B) at the top 

(C) at the bottom 

(D) from sides 

5. The type of flow in which the velocity at any given time does not change with respect  to space is called 

(A) Uniform flow

(B) Compressible flow 

(C) Steady flow 

(D) Rotational flow 

6. A venturimeter is preferred to an orifice plate because 

(A) It is cheaper 

(B) It is easy to install 

(C) Energy loss is less 

(D) It has very high life 

7. Hydraulic radius of a Notch is equal to 

(A) Area divided by the square of wetted perimeter 

(B) Area divided by the wetted perimeter 

(C) Wetted perimeter divided by area 

(D) Square root of area 

8. The unit of Chezy's constant 'C' in the Chezy's formula is  

(A) m/s 

(B) m/s² 

(C) m²/s 

(D) m^1/2/s

9. Which of the following head loss is significant in a pipe flow? 

(A) Loss of head due to gradual contraction 

(B) Loss of head due to friction 

(C) Loss of head due to sudden enlargement 

(D) Loss of head due to sudden contraction 

10. Which relation is incorrect? 

(A) Pelton Turbine - Impulse Turbine 

(B) Francis Turbine - Impulse Turbine 

(C) Kaplan Turbine - Reaction Turbine 

(D) Francis Turbine - Reaction Turbine 

11. The energy of the isolated system is always a constant, which is given by: 

(A) Zeroth law of thermodynamics 

(B) First law of thermodynamics 

(C) Second law of thermodynamics 

(D) Third law of thermodynamics 

12. A series of operations, which takes place in a certain order and restore the initial  conditions at the end, is known as 

(A) Reversible cycle

(B) Irreversible cycle 

(C) Thermodynamic cycle 

(D) None of these 

13. The most efficient method of compressing air is to compress it 

(A) Adiabatically 

(B) Isentropically 

(C) Isothermally 

(D) Isochorically 

14. 1°C is equal to 

(A) 273.15 K

(B) 274.15 K 

(C) 283.15 K 

(D) 263.15 K 

15. Which of the following devices complies with the Clausius statement of the second  law of thermodynamics? 

(A) Closed-cycle gas turbine 

(B) Internal combustion engine 

(C) Steam power plant 

(D) Domestic refrigerator 

16. Carnot cycle consists of 

(A) Two constant volume & two isentropic processes 

(B) Two isothermal and two isentropic processes 

(C) Two constant pressure and two isentropic processes 

(D) One constant volume, one constant pressure and two isentropic processes 

17. The ratio of brake power to indicated power of an I.C. engine is called 

(A) Mechanical efficiency 

(B) Thermal efficiency 

(C) Volumetric efficiency 

(D) Relative efficiency

18. Morse test in Multi-cylinder engines is used to determine 

(A) Volumetric efficiency 

(B) Brake thermal efficiency 

(C) Indicated power 

(D) Brake power 

19. Thermal conductivity of copper with rise in temperature 

(A) Decreases

(B) Increases 

(C) Remains constant

(D) None of these 

20. By which of the following modes of heat transfer, Heat is mainly transferred from an  insulated pipe to the surrounding still air? 

(A) Conduction 

(B) Radiation 

(C) Forced convection 

(D) Natural convection 

21. A sliding bearing which can support steady loads without any relative motion between  the journal and the bearing is called 

(A) Zero film bearing 

(B) Boundary lubricated bearing 

(C) Hydro dynamic lubricated bearing 

(D) Hydrostatic lubricated bearing 

22. The piston pin bearings in heavy duty diesel engines are 

(A) Needle roller bearing

(B) Tapered roller bearing 

(C) Collar bearing 

(D) Cylindrical roller bearing 

23. The diameter of the hub of the fly wheel is usually taken as 

(A) Equal to the diameter of the shaft 

(B) Twice the diameter of the shaft 

(C) Three times the diameter of the shaft 

(D) Four times the diameter of the shaft 

24. A spur gear with pitch circle diameter D has number of teeth T. The module m is 

(A) D/T 

(B) T/D

(C) π D/T 

(D) D.T 

25. Lewis equation in a spur gear is used to find the 

(A) Tensile stress in bending 

(B) Shear stress 

(C) Compressive stress in bending

(D) Fatigue stress 

26. If Z' is the absolute viscosity of the lubricant in Kg/m-s, N' is the speed of the journal in  rpm and p' is bearing pressure in N/mm² then the bearing characteristic number is 

(A) ZN/p 

(B) Zp/N 

(C) Z/pN 

(D) pN/Z

27. The difference between the tooth space and the thickness, as measured along the  pitch circle is 

(A) Tooth depth 

(B) Clearance 

(C) Backlash 

(D) Total depth 

28. In which property of steel has the ability to resist breaking rather than the ability to  absorb energy during deformation? 

(A) Machinability

(B) Hardness 

(C) Toughness 

(D) Malleability 

29. If N' is the speed of the arm and ball about the spindle axle then height of a watt's  governor is equal to 

(A) 8.95/N²mts 

(B) 89.5/N²mts 

(C) 895/N²mts 

(D) 8950/N²mts 

30. A device used to put off fire in the furnace of the boiler when the level of the water in  the boiler falls to an unsafe limit is called 

(A) Blow off cock 

(B) Super heater 

(C) Fusible plug 

(D) Ecnomiser 

31. Modulus of elasticity is the ratio of 

(A) Stress to strain 

(B) Deformation to original length 

(C) Stress to original length 

(D) Strain to original length 

32. The ratio of lateral strain to the linear strain is 

(A) Modulus of elasticity 

(B) Modulus of rigidity 

(C) Bulk modulus

(D) Poisson's ratio 

33. The maximum thermal stress in a circular tapering section is 

(A) Directly proportional to the bigger diameter 

(B) Direclty proportional to the smaller diameter 

(C) Inversely proportional to the bigger diameter 

(D) Inversely proportional to the smaller diameter 

34. The radius of a circle for a shaft of radius (r) rotating a bearing is 

(A) r. sin θ

(B) r. cos θ 

(C) r. tan θ 

(D) r. cot θ

35. The centre of gravity of an equilateral triangle with each side (a) is ____ from any of the sides. 

_(A) a. √3 ₂

_(B) a. √2 

3 (C) a/2 √3 

(D) a/3 √3 

36. The moment of inertia of a triangular section base (b) height (h) about an axis passing  through its centre of gravity and parallel to the base is given by the relation (A) bh³/12 

(B) bh³/24 

(C) bh³/36 

(D) bh³/48 

37. The bending moment of the centre of a simply supported beam carrying a uniformly  distributed load is 

(A) wl 

(B) wl/2 

(C) wl²/4 

(D) wl²/8 

38. If diameter of revet is (d) safe permissible shear stress for revet material (T) then  shearing value Ps equal to 

(A) π/8*d²*T 

(B) π/4*d²*T 

(C) π/36*d²*T 

(D) π/16*d²*T 

39. If area of the weld(A) permissible stress in the fillet (σ) then strength of a fillet weld (P) is 

(A) A. σ 

(B) A / σ 

(C) 2A. σ 

(D) σ/A 

40. The load required to produce a unit deformation in a spring is called 

(A) Torsion of spring

(B) Stiffness of spring

(C) Bending of spring

(D) Deflection of spring

41. The two-stroke cycle engine 

(A) One suction valve and one exhaust valve operated by two cams  

(B) Only ports covered and uncovered by piston to effect charging and exhausting (C) One suction valve and one exhaust valve operated by one cam 

(D) None of the above 

42. In SI. engine, to obtain required firing order 

(A) Battery is installed 

(B) Ignition Coil is installed 

(C) Distributor is installed 

(D) Carburettor is installed

43. In 4-stroke cycle engine power is produced in 

(A) Every revolution of the crankshaft 

(B) Each stroke 

(C) Every alternate revolution of the crankshaft 

(D) None of the above 

44. Which cross-section do compression rings have? 

(A) Triangular cross-section 

(B) Rectangular cross-section 

(C) Circular cross-section 

(D) Square cross-section 

45. The distance between the centres of the front wheel is called 

(A) Wheel base 

(B) Axle width 

(C) Turning circle 

(D) Track 

46. The venturi in the carburettor causes the 

(A) Increase of air velocity

(B) Increase of manifold vacuum 

(C) Decrease of air velocity 

(D) Decrease of fuel flow 

47. The turbocharger uses ______ energy 

(A) Energy of exhaust gases 

(B) Engine energy 

(C) Energy from a radiator 

(D) Energy from a flywheel 

48. Thermostat valve in the cooling system controls 

(A) The flow of water 

(B) The temperature of water 

(C) Both (A) & (B) 

(D) None of the above 

49. In the following system, lubricating oil is carried in separate tanks from where it is fed  to the engine. 

(A) Wet sump system 

(B) Mist lubrication system 

(C) Splash system 

(D) Dry sump system 

50. Which technology changes the timing of intake/exhaust valves when the engine is  running? 

(A) DOHC 

(B) CRDI 

(C) VVT 

(D) TDI 

Related Blogs :

• Kerala PSC AMVI Syllabus PDF 2026
• Kerala PSC Assistant Motor Vehicle Inspector Notification 2026 April - Expected

Why practicing Kerala PSC AMVI PYQ Is Essential?

• Understand the Kerala PSC AMVI exam pattern and marking scheme.
• Identify important topics from the Kerala PSC AMVI syllabus.
• Analyze previous question trends asked by Kerala PSC.
• Improve time management and speed during the exam.
• Boost accuracy and problem - solving skills.
• Increase confidence for the Kerala PSC Assistant Motor Vehicle Inspector exam.
• Helps in better revision and smart preparation. 

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Frequently Asked Questions

1. What is the Kerala PSC Assistant Motor Vehicle Inspector (AMVI)?
The Kerala PSC AMVI is a government post recruited by the Kerala Public Service Commission for the Motor Vehicles Department of Kerala.

2. What is the qualification required for the Kerala PSC AMVI post?
Candidates must have a SSLC certificate or Diploma in Automobile Engineering or Mechanical Engineering to apply for the Kerala PSC Assistant Motor Vehicle Inspector post.

3. What are the duties of a Kerala PSC AMVI?
An Assistant Motor Vehicle Inspector conducts vehicle inspections, checks vehicle fitness, verifies documents and enforces motor vehicle laws to ensure road safety.

4. Why is the Kerala PSC AMVI post popular?
The Kerala PSC AMVI job offers high salary, government job security, authority and career stability, making it a highly sought-after technical post.

5. What subjects should candidates prepare for the Kerala PSC AMVI exam?
Candidates should focus on automobile and mechanical engineering topics, general knowledge and current affairs for the Kerala PSC Assistant Motor Vehicle Inspector exam.