160/2015

India’s first computer was installed at Indian Statistical Institute, Kolkata in the year :
(A) 1950 (1). 1988 (C) 1956 (D) 1938

Who is the founder of “Sankhya”, the Indian Journal of Statistics ?
(A) CR. Rao (B) R.C. Bose
(C) S.N.Roy (D) २.८. Mahalanobis

Which ministry co-ordinates the census activities in India ?
(A) Home Affairs (8) MoSPI (3) பம்‌ (D) Finance

Which of the following measures involve nominal scale ?<.... See more

26.

27,

೨8.

29.

30.

81.

32:

33.

The positive crankease ventilation aystem helps :
(ಡಿ) To redirect the blow by gasés in the crankease to inlet manifold
(0) To reduce the atmospheric 101000. caused by the engines
(€C) To prevent oil dilution and sludge formation
(D) भाम the above

Which of the following is not a function of fuel injection system in the diesel engines?
(A) To atomise .... See more

49.

50.

91.

52.

58.

54.

88.

56.

87.

The air suspension system is commonly employed in :
(ക) Heavy buses and trucks (B)
(C) Stationary engines D)

The electrolyte used in a lead-acid battery 18 :

Light commercial vehicles
Motor cycles

Sulphuric acid
Lead Peroxide

Rubber
Cast iron

Crankease
Flywheel

Spur gears

(A) Hydrochloric acid.... See more

57.

88.

59.

62.

63.

64.

65.

Which one of the following suspension springs also acts as a means for locating the axle?

(8) Leaf (B) Helical

(0) Tortion bar (D) Rubber
Thermal efficiency of 2-stroke engine is ———————— 4-stroke engine.

(ക Less than (B) Greater than

(C) Equal to (D) None of these

The device used to measure the clearance between the valve and ta.... See more

66.

67.

68.

69.

70.

7],

72.

73.

74.

The condenser is connected parallel with the :
(2) Secondary winding (B) CB points
(C) Ignition switch (D) None of these

The main cause for the change in engine oil viscosity 38 :
(ல Humidity 5 (18) Vaccume
(0) Contamination (D) Temperature

The anti freeze solution commonly used ‏دص‎ automobile is :
(ക) Tso-octane 18) Heptane
(©.... See more

75.

78.

17.

78.

79.

80.

81.

82.

83.

Dog clutches are used in :
(ക) Brakes 18) TFriction clutches

(C) Starter (D) Gear boxes

The type of gear box, which uses friction cones to equalize speeds of the members prior to
gear engagement is ;

(ಹ) Shding mesh © Constant mesh
(C) Crash type (D) Synchro mesh

In semi floating type axle, the vehicle load is taken b.... See more

15.

16.

17,

18.

18.

20.

21,

22,

28,

The head over a 90 degree V notch increases from 0.15 m to 0.3 m. The ratio of new discharge
to original discharge is :

(ல 7 (೫) 4
© 2 (2) 4
The purpose of differential speed on 07೩179 15 served by :
(ಯ) Taper on rails (18) Taper on wheel face
(C) Track contour (D) Track curvature

A projectile has a range R in the gravitational field .... See more

67,

68.

70.

71.

72,

78.

१५.

75.

Air refrigeration cycle is usually employed in :
(ಗಿ) Domestic refrigerators (B) Commercial refrigerators
(C) Air conditioning (D) Gas 11061800100

Efficiency of a pelton wheel is maximum if the ratio of jet velocity to tangential velocity വ്‌
wheel is

ಯ 1 ® 2
(0 8 o 4
The number of inversions for a slider crank mechanism is :
(है) .... See more

10. Which of the following is used to avoid over cooling in the cooling system of the engine ?
(வி ‏ضرق سمي‎ (8) Thermostat
(ப Expansion reservoir (12) Radiator
11. Inwhich of the following lubrication system lubricant oil is mixed with fuel ?
(^) Splash system (18) Pressure system (C) Dry sump (13) Petroil system
12. Which is the following number is used to indicate ignition quality of diesel fuel ?
(ಗಿ) Cetane (98) Octane (C}) Random (D) None of thes.... See more

47.

48.

49.

50.

ST,

52,

83.

Mechanical efficiency of an engine 5

(^) IHP/BHP (B) BHP/IHP (9 BHP/FHP ~ FHF/BHP

The sound produced due to the excess clearance between piston and cylinder during cold
starting :

(८) Knocking (B] Diston slap (೮) Humming (ப) Piston scuffing

The distance between center line of crankpin and main journal axis is :
(A) Crank throw (9) Valve clearance

).... See more

58.

59.

60.

61.

62.

03,

64.

To reduce emission of unburned hydrocarbon in the automobile exhaust gas combustion
chamber is designed as :

(ಗಿ) Spherical (8) Hemispherical (0) (7011081 (D) Cubical

The colour of positive plate in Lead acid battery is :
(வ) Chacolate brown (8) ರ್ಟ
) ‏٣۱۸‎ (D) Red

The device used to convert AC current in the armature coil to DC current is :
See more

19,

20.

21.

22,

24.

25.

ಹ procedure of removing air out of the braking system is known as :

(ಗಿ)
(0)

Brake adjusting

Brake bleeding

{B) Brake dragging
(D) Brake compensaling

Hydraulic brakes works on the principle of :

ഇ

Pascal’s law (ए) Bovie's law

(0 Charl's law (D) Newton's law

The rocking, chair action of vehicle during running is known as.... See more

282/2015

6.

Maximum : 100 marks

Time : 1 hour and 15 minutes

Before a mechanic get under a vehicle he should make sure that :
(ಗ) The tyres are inflated (0) He use a ereeper
(C) 'The jack handle is down (D) The vehicle is on safety stands

In automobile servicing concept what is meant by ‘Tear down
(ക Adjusting (B) Disassembling
(C) Reassembling (D) Machining

Which is most suitable to check spark plug gap?
.... See more

24. Which of the following is a rich air fuel ratio?

(4) 1 B 11
(0) 1 (0) 15:1

25. 'The percentage of combustion heat, available at crank shaft for useful work output is :

(ಗಿ) 35% (18) 55%
(¢) 60% (7) 20%

26. In an engine 081102 swirl combustion chamber :

(^) More air fuel mixture enters (B) Improved scavenging take place

(C) Improved combustion take place (D) Burned gas has no back pressure

27. The main purpose of pist.... See more

10.

11.

12,

13.

14.

15.

The automobile engines crank shaft is made of :
(A) Cast steel (2) Castiron
(C) Torged steel 10) High carbon steel

The main function of the ignition condenser is :
(2) increasing contact arching of terminals
(ए) reduces primary spark
(0) reduces secondary spark
(12) reduces arcing at the contacts

The angle between the central line of the king-pin and vertical line is called :.... See more

ا الس

17.

18.

19.

20.

21.

22.

23:

94.

25.

The type of starter motor employed in automobile vehicle 1s the :
(^) Compound motor (ए) Shunt wound motor
( Series wound motor (D) Induction motor

1f the brake efficiency of a vehicle is 72%, then the braking quality is said to be :

(A) Fair (B) Poor
(( Good (D) Very good
The slip joint permits a change in the :See more

36.

37.

88.

39.

40.

41.

42,

43.

क air fuel mixtured required at the time of engine starts ೫:
(ಗಿ) Lean mixture (13) Rich mixture
(C) Medium mixture (D) None of these

The discharged lead acid battery has on its plates :
(A) Sulphuric acid (B) Lead peroxide
(C) Spongy lead (D) Lead sulphate

The yelationship between resistance, current and veltage can be expressed in the form of an
.... See more

44, Which of the classification indicates a multigrade oil?

(4) SAE 90
(ಲ) 160

45. The melting temperature of the solder is :
(ಗಿ) 1800
(©) 1840

46. The type of axle on bus is :
(A} Three quarter floating"
(0) एषा floating

47. Automobile gears are generally made of :
(५५) Aluminium alloy
(C) Medium earbon steel

48. The free pedal play in car clutch is about ;
(^) ऊ फा

(0) 20 गणा
See more

61.

62,

68.

64.

06.

66,

67.

68.

Indicated horse power could be determined by the following formula :

PLANK PLANK

Ay ‏حتت‎ ಹ
۵ “388,000 ® 5000
oy PLANK PLANK
^ 00 © 000

To removing trapped air from the hydraulic brake system is known 85 :
(५) Bleeding (8) Cleaning
(©) ண்டி (D) Trapping

The tractive effort increases if the wheel diameter is :
.... See more

26.

27.

28,

29.

80,

31.

82,

33.

34.

5

18/8 stainless steel contains :
(A) 18% Vanadium, 8% Chromium ല്‍ 18% Chromium, 8% Nickel
(C) 18% Tungston, 8% Nickel (D) 18% Tungston, 8% Chromium

Muntz metal contains copper and zine in the ratio :

Ay 1:1 (8) -2:8
¢ 3:2 (2) 1:4
Monal metal is an alloy ല്‌:
(A) Nickel and Copper (18) Copper and Chromium
)0 Nickel a.... See more

721.

18.

29.

80.

81.

82.

Which of the following is not a commaon section of V belts?
ஙா (2) ©
© E യു ^

A rack is a gear of infinite :

(^) श्लो (2) Module
(C) Diameter (D) Number of teeth _
‏سه» 0 قب‎
The circular pitch of a toothed wheel with 24 teeth and a module of 4.25 mm is :
(ಕ) 1.35 mm (B) 4.26 mm
0( 667 ‏سد‎ -(D) 13.35 ‏سد‎
‎The maximum efficie.... See more

` 86.

87.

88.

89.

91.

92.

93.

A 60 mm long and 6 mm thick fillet weld carries a steady load of 15 kN along the weld. The
shear strength of the weld material is 200 MPa. The factor of safety is :

&) 24 (18 4
(0 48 D) 6.8

In a butt weld joint the throat of weld as compared ‏ما‎ size of the weld is in the ratio :
ക്ര 1 By 1:2
© 1:1 o 1:3

A circular solid rod of diameter d welded to.... See more

75.

76.

77.

78.

79.

80.

81.

82.

83.

The Eulers formula for columns is valid for :
{A) Large slenderness ratio (0) Zero slenderness ratio

(C) Small slenderness ratio (11) None of the above

In छ flange coupling, the flanges are coupled together by means 01;

(4) Studs (ए) Bolts and Nuts
(29 Nail (11) Rivets
Zeroth law of thermodynamics form the basis of —————— meas.... See more

76. Which are the two spices taken from the same fruit?
(வ Thyme and Tarragon (B) Cinnamon and Cloves
(0 Basil and Bay leaves (D) Mace and Nutmeg

77. What is the meaning of the culinary term Mirepoix?
(A) Coarsely cut onions, carrots, celery, thyme, bay 10೩? 010.
(8) Minced meat with spices
(¢) Sliced potatoes, tomatoes and cucumber
(D) Dressed chicken prior to roasting

78, ——————— is a water soluble Vitamin.

(A) Vitamin A (B).... See more

17

18.

19.

21,

24.

25.

Coolant pump used in automobile is :
(ಗಿ) Reciprocating type
(C) Centrifugal type

Radiator core is made of :
(A) अल्ल
(0) Cast iron

(B)
(1)

(0)
(D)

Vane type
None of the above

Copper
Plastic

The lubrication system commonly used in two stroke engine is :

(A) Splash
(0) Preasure

സബാ of gears used i.... See more

76.

77.

78.

82.

Brake bleeding is used for :
(A) Removing excess fluid (ए) Removing air
(C) Removing excess pressure (D) Removing vaccum

The term “ply rating” with reference to a tyre indicates :
(&) Number of plies (8) Rated inflation
(C) Rated strength (D) Size of tyre

The type of reflector used for automobile head lamp is :
(A) Spherical (13) Parabolic
(0) Hyperbolic (D) Plain

The diameter of the engi.... See more