TRACER QUESTION PAPER 2021

KERALA PSC TRACER QUESTION PAPER 2021

 1. The ignition quality of petrol is expressed by 

A) Cetane number 

B) Octane number 

C) Calorific value 

D) All of these 

2. General gas equation is 

A) pv = RT 

B) pv = MRT 

C) pv = constant 

D) pvn = constant 

3. A system which is completely uninfluenced by the surrounding is called 

A) Open System 

B) Closed System 

C) Isolated System 

D) Properties of System 

4. When a process are performed on a system in such a way that the final state identical with initial state known as 

A) State of a system 

B) Thermodynamic cycle 

C) Thermodynamic property 

D) Zeroth Law of Thermodynamics 

5. The extension line should extend 3 mm beyond the 

A) Outline 

B) Centre line 

C) Dimension line 

D) Hidden line 

6. Find the mean in the numbers 18, 22, 15, 32, 10, 23, 20. 

A) 20 

B) 32 

C) 18 

D) 15 

7. A pyramid with a square base has ......Faces 

A) 4 

B) 5

C) 6 

D) 8 

8. Melting point of ice is 

A) 0°F 

B) 100°C 

C) 100°F 

D) 32°F 

9. If the circumference of the square is 16 cm then the area of the same is  .........cm2 

A) 16 

B) 32 

C) 64 

D) 25

10. The lateral development of a cylinder is of ..........shape. 

A) Triangle 

B) Circle 

C) Ellipse. 

D) Rectangle 

11. Which gas is mainly produced in septic tank? 

A) Oxygen 

B) Nitrogen 

C) Hydrogen 

D) Hydrogen sulphide 

12. Which type of trap is used in Indian water closet ? 

A) S Trap 

B) P Trap 

C) U Trap 

D) Gully Trap 

13. What is the first stage in sewage treatment process ? 

A) Sedimentation 

B) Filtration 

C) Screening 

D) Softening 

14. Which device is used to prevent sewer gases from entering the building? 

A) Filter 

B) Ventilator 

C) Vacuum Pump 

D) Trap 

15. What is the name of the water coming out of the kitchen, bathroom, wash basin ? 

A) Sullage 

B) Garbage 

C) Sewage 

D) Discharge 

16. A Francis Turbine is 

A) An impulse turbine 

B) A radial flow impulse turbine 

C) An axial flow turbine 

D) A reaction radial flow turbine 

17. An object situated in first quadrant, that means 

A) Below HP and behind VP 

B) Above HP and behind VP 

C) Above HP and in front of VP 

D) Below HP and in front of VP 

18. The Standard size of D3 Drawing board is 

A) 700 x 500 x 25 mm 

B) 700 x 500 x 15 mm 

C) 500 x 350 x 25 mm 

D) 500 x 350 x 15 mm

19. Dodecahedron is a solid having ..............equal and regular pentagons. 

A) 10 

B) 11 

C) 12 

D) 15 

20. The view drawn by taking actual dimension without preparing isometric scale is called 

A) Isometric View 

B) Isometric Projection 

C) Oblique Projection 

D) Perspective Projection 

21. Cumulative errors that are proportional to 

A) √ L 

B) L 

C) L2 

D) L²

22. .....................are the ends of the survey lines which command the boundaries of the survey 

A) Tie station 

B) Main station 

C) Base line 

D) None of these 

23. The offset should not be longer than 

A) 30 m 

B) 20 m 

C) 15 m 

D) 10 m 

24. In optical square the angle between the first incident ray and the last reflected ray is ............the angle between them the two mirrors. 

A) half 

B) twice 

C) same 

D) none of these 

25. For compass survey the direction from a survey station to some well defined permanent object, or the first line of survey is known as 

A) True bearing 

B) Magnet bearing 

C) Arbitrary bearing 

D) All of these 

26. The effect of curvature is to cause the objects sighted appear ..............than they really are 

A) Higher 

B) Lower 

C) Same 

D) None of these

27. The effect of refraction is 

A) Not constant 

B) Constant 

C) Zero 

D) None of these 

28. In total station data is stored in 

A) Pen drive

B) Data Card 

C) Micro Processor 

D) External Hardware 

29. The minimum clearance kept between the Grillage beam in Grillage foundation is 

A) 7 cm 

B) 8 cm 

C) 10 cm 

D) 14 cm 

30. The pile anchor down the structure subjected to uplift pressure due to overturning moment 

A) Sheet pile 

B) Uplift pile 

C) Batter pile 

D) Screw pile 

31. The process of filling hollow space of walls before plastering is known as 

A) Peeling 

B) Blistering 

C) Hacking 

D) Dubbing out 

32. Additional Pozzolana to ordinary portland cement increases 

A) Bleeding 

B) Shrinkage 

C) Permeability 

D) Heat of Hydration 

33. Wrought iron is manufactured from pig iron by 

A) Refining 

B) Pudding 

C) Shingling 

D) All the above 

34. Temporary structure to support arch during its construction 

A) Shuttering 

B) Support 

C) Post 

D) Centering

35. The straight line which is generating the surface of the cone is called 

A) Generator 

B) Vertex 

C) Axis 

D) Base 

36. The amount of water held in the soil after excess gravitational water has been drained 

A) Wilting coefficient 

B) Saturation capacity 

C) Field capacity 

D) None of these 

37. The Canal located outside the command area meant primarily to convey water from one source of supply to another within the same 

A) Feeder Canal 

B) Distributory 

C) Diversion Canal 

D) None of these 

38. The structure constructed at the off take of the canal adjacent to the river under sluice 

A) Diversion head work 

B) Outlet 

C) Inlet 

D) Head Regulator 

39. The usual capacity of tube well is .......cumecs 

A) 0.056 

B) 0.56 

C) 0.004 

D) 0.040 

40. Duty of an irrigation tube well is ............than that of a canal irrigation. 

A) Higher 

B) Lower 

C) Same 

D) None of these 

41. The deformation per unit length is called 

A) Stress

B) Strain

C) Young's Modulus 

D) Bulk Modulus 

42. The unit of force in CGS system of unit is called 

A) Dyne 

B) Newton 

C) Kilogram 

D) All of these

43. Two forces act at an angle of 120°. If the greater force is 50 Kg and their resultant is perpendicular to the smaller force, the smaller force is 

A) 20 kg 

B) 25 kg 

C) 30 kg 

D) 35 kg 

44. The moment of inertia of circular lamina of diameter (d) about an axis perpendicular to the plane of the lamina and passing through its centre 

45. Two loads of 50 kg and 75 kg are hung at the ends of a rope passing over a smooth pulley shown in figure below. The tension in the string is 

A) 50 kg 

B) 75 kg

C) 25 kg 

D) 60 kg 

46. Which command create a new objects parallel to the original object? 

A) Parallel 

B) Offset 

C) Copy. 

D) Mirror 

47. Which command draw line that extends infinity in both direction ? 

A) Line 

B) Poly line 

C) X Line 

D) None of these 

49. According to Indian Standard Institute the actual size of modular brick is 

A) 23*11.5*7.5 cm 

B) 25*13*7.5 cm 

C) 19*9*9 cm 

D) 20*10*10 cm 

50. The measurement is not made in M2 ion case of 

A) DPC 

B) Form Works 

C) Concrete Jeffries. 

D) R. C. Chajja 

51. Telescopic gauge is used for 

A) Measuring inside size of slots or holes 

B) Checking taper bores 

C) Checking the clearance between mating surfaces 

D) Check pitch of the given screw 

52. In a M20 thread, M denotes 

A) Metric 

B) Millimeter 

C) Morse 

D) Major diameter 

53. The least count of Vernier bevel protractor is 

A) 1° 

B) 0.5 

C) 5 

D) 5" 

54. The minimum edge distance for rivets of diameter (d) in steel plates shall be 

A) 2d 

B) 3d

C) 1.50 

D) 2.50 

55. heat engine converts the heat energy from fuel combustion or any other source into which type of work? 

A) Electrical work 

B) Mechanical work 

C) Pressure work 

D) None of these 

56. The amount of heat absorbed to evaporate 1 kg of water from its saturation temperature, without change of temperature, is called 

A) Sensible heat of water 

B) Latent heat of vaporization 

C) Enthalpy of steam 

D) Entropy of steam

48. Brick walls are measured in M2 if the thickness of the wall is 

A) 10 cm 

B) 15 cm 

C) 20 cm 

D) None of these

57. If petrol is used in a diesel engine, then 

A) Low power will be produced 

B) Efficiency will be low 

C) Higher knocking will occur 

D) Black smoke will be produced 

58. When the whole body is sectioned at its middle, then the sectional view is obtained is 

A) Half section 

B) Full section 

C) Off-set section 

D) Broken section 

59. The formula for finding the volume of a solid sphere is 

A) 

60. If x + y = 32 and x - y = 10, then the value of x is 

A) 11 

B) 22 

C) 42 

D) 21 

61. In a cabinet type of oblique projection, the receding edge is taken as 

A) Half

B) Full 

C) 85% 

D) Double 

62. When a 10 cm line in a drawing represents a 5 cm edge of an actual object then the scale of drawing is 

A) 1:1 

B) 5:10 

C) 1:2 

D) 2:1 

63. Lines of hidden edges are drawn with 

A) Continuous thick lines 

B) Dashed lines 

C) Alternately long and short lines 

D) Wavy lines 

64. If a line is inclined at 45° to the HP and 30° to the VP, its front view is inclined at 

A) 30° to XY 

B) Between 30° and 45° to XY 

C) 45° to XY

D) Greater than 45° 

65. What is the nominal shape of septic tank? 

A) Square 

B) Circular 

C) Rectangle 

D) Oval 

66. Poise is the unit of 

A) Mass density 

B) Kinematic viscosity 

C) Viscosity 

D) Velocity gradient 

67. Mass per unit volume is known as 

A) Specific gravity 

B) Density 

C) Viscosity 

D) Discharge 

68. Manometer is a device used for measuring 

A) Pressure at any point in a fluid 

B) Velocity at any point in a fluid 

C) Discharge of a fluid 

D) Temperature at any point in a fluid 

69. The increase of temperature 

A) Increase the viscosity of liquid 

B) Decrease the viscosity of liquid 

C) Decrease the viscosity of gas 

D) Partially increase or decrease the viscosity of liquid 

70. Pitot Tube is used for measurement of 

A) Pressure 

B) Discharge 

C) Temperature 

D) Fluid flow velocity 

71. The following are the bearing of the line AB and AC : AB N15 15E, AC N87 10E. Calculate the angle BAC. 

A) 71° 05 

B) 71° 55' 

C) 71° 15' 

D) 61° 15'

72. The image formed on the plane of cross hair by the objective is 

A) Virtual and Inverted 

B) Magnified and Inverted 

C) Real and Inverted 

D) None of these 

73. The method chiefly used for locating the details from stations, which have bee previously established by triangulation 

A) Resection 

B) Radiation 

C) Intersection 

D) Traversing 

74. The absence of Chromatic Aberration is known as 

A) Aplantation 

B) Achromatism 

C) Brightness 

D) None of these 

75. For locating the river which method of plane table is used ? 

A) Radiation 

B) Intersection 

C) Traversing 

D) Resection 

76. Safe permissible load on coursed rubble in cement mortar 

A) 90 T/M2 

B) 45 T/M2 

C) 88 T/M2 

D) 100 T/M2 

77. The depth of lintel should be 

A) 15 cm 

B) 8 cm 

C) 10 cm 

D) 20 cm 

78. The diameter of bar used in lintel for span 1.5 to 2 m 

A) 16 mm 

B) 10 mm 

C) 6 mm 

D) 12 mm 

79. The sloping surface used to provide an easy connection between floor 

A) Stair 

B) Ramp 

C) Lift

D) Escalator 

80. What is the alignment of cross joint along the plumb line ? 

A) Lintel 

B) Perpend 

C) Bed Block 

D) Vertical Line 

81. The point of contact between the focal sphere and section plane is called 

A) Vertex 

B) Axis 

C) Generator 

D) Focus 

82. For reducing and enlarging drawing from an available drawing without convertir numerical value is called 

A) Compass 

B) Proportional Divider 

C) Set square 

D) Planimeter 

83. In first angle projection object is situated ........of the observers eye and the plane of projection. 

A) Infront 

B) In between 

C) None of these 

D) Both A and B 

84. A solid having four equal equilateral triangular faces 

A) Pyramid 

B) Tetrahedron 

C) Cone 

D) Polygon 

85. An actual length of 5 m of a room is represented by 25 mm length on drawing RF will be 

A) 1:20 

B) 1 : 200 

C) 1 : 2000 

D) 1:2 

86. The property of a fluid which offers resistance to the movement of one layer of fluid over another layer of fluid 

A) Specific Gravity 

B) Viscosity 

C) Density 

D) None of these

87. The rate of increase of pressure in a vertical direction equal to weight density of fluid at that point 

A) Hooks Law 

B) Hydraulics Law 

C) Hydrostatic Law 

D) None of these 

88. Piezometer is used for measuring 

A) Velocity 

B) Pressure 

C) Temperature 

D) Viscosity 

89. The type of flow in which the fluid characteristics like velocity, pressure, density etc. do not change with time 

A) Steady flow 

B) Uniform flow 

C) Compressible flow 

D) Laminar flow 

90. Command used to remove the selected object from a drawing 

A) Remove 

B) Erase 

C) Extrude 

D) All the above 

91. Due to change in price level, a revised estimate is prepared if the sanctioned estimate exceeds 

A) 2% 

B) 2.5% 

C) 4% 

D) 5% 

92. While preparing a detailed estimate area should be measured correct to 

A) .01 M2 

B) .02 M2 

C) .001 M2 

D) .0001 M2 

93. A.................... is a set of rules that specify the standard for constructed objects such as buildings and non-building structures. 

A) Building Code 

B) Building by laws 

C) IS Code 

D) Procedure 

94. Combination of two or more plots as a single plot is called 

A) Amalgamation 

B) Frontage 

C) Bifurcation 

D) Building set back

95. The property by which lime will set in damp place 

A) Harated Lime 

B) Hydraulicity 

C) Calcination 

D) Slaking 

96. A body of weight 300 KN is placed on a horizontal plane. If the coefficient of friction between the body and the horizontal plane is 0.25. Determine the horizontal force required to just slide the body 

A) 50 KN 

B) 65 KN 

C) 75 KN 

D) 85 KN 

97. The forces whose line of action lie on the same lines are known as 

A) Coplanar forces 

B) Collinear forces 

C) Concurrent forces 

D) Equilibrant forces 

98. A dimension is stated as 28 = 0.02 mm in a drawing. What is the tolerance ? 

A) 28 mm 

B) +0.02 mm 

C) -0.02 mm 

D) 0.04 mm 

99. Which of the following is not the correct method of expressing a Fit under BIS system 

of limits and fits? 

A) 50 H8/g7 

B) 50 g7/H8 

C) 50 H9-97 

D) 50 H9/g7 

100. Identify the Pneumatic symbol. 

A) Electric motor 

B) Pump 

C) Hydraulic motor 

D) Accumulator