Motor Mechanic Health Services 347/2016 Answer Key 68/2018

car wheel

Post: Motor Mechanic
Department: Health Services
Category Code: 347/16
Qualification: Automobile Engineering + Two years Practical Experience in repairs and maintenance of Motor Vehicles + Possession of Motor Driving License
Question Paper Code: 68/18
Date of Test: 18-06-2018


If you find mistakes, comment below



  1. The heart of the ignition system circuit and component is :
    • Condenser
    • Ignition coil
    • Generator
    • Distributor

  2. When the clutch is disengaged position as a result :
    • The power is transmitted
    • The power is not transmitted
    • The power is in neutral position
    • None of these

  3. Most of the gear box casings are made of :
    • High carbon steel
    • Mild steel
    • Chromium steel
    • Aluminium alloy

  4. The brake fluid has the characteristics like :
    • Velocity and pressure
    • Velocity and speed
    • Viscosity and boiling point
    • Velocity and boiling point

  5. How many cells are used in 12 volt automobile battery?
    • 3
    • 4
    • 8
    • 6

  6. If the air fuel mixture ignites before the spark takes place at spark plug is called :
    • Penetration
    • Detonation
    • Oxidization
    • Pre-ignition

  7. What is the reason behind using aluminium alloy to make cylinder blocks?
    • Light in weight and has good heat dissipation
    • Low in material cost
    • Good look in colour
    • Heavy weight and poor heat dissipation

  8. The thermal efficiency of the 4 stroke engine is :
    • Low
    • Medium
    • High
    • Normal

  9. The inlet valve generally spins about 15 degree before TDC is called :
    • Valve lag
    • Valve lead
    • Valve twist
    • None of these

  10. In a 4 stroke cycle engine each cylinder has :
    • Two parts
    • Four valves
    • One valve
    • Two valves
    Question Error

  11. The operation of removing trapped air from the hydraulic brake system is known as :
    • Exhausting
    • Trapping
    • Bleeding
    • Ventilation

  12. When a vehicle is moving on straight level road and the resistance affecting both the driving wheels is the :
    • Lower
    • Higher
    • Normal
    • Same

  13. Which of the following is not a part of differential gear box?
    • Star pinion
    • Axle shaft
    • Drive pinion
    • Crank shaft

  14. The shape of reflector used for automobile head lamp is :
    • Circle
    • Spherical
    • Parabolic
    • Elliptical

  15. The leaf springs are generally made of :
    • Cast steel
    • High carbon steel
    • Cast iron
    • Spring steel

  16. The backward tilt of the king pin and axle at the top is called :
    • Camber angle
    • Toe - in
    • King pin inclination
    • Caster angle

  17. The oil pump of the automobile engine is driven by the :
    • Cam shaft
    • Gear shaft
    • Follower shaft
    • Crank shaft directly
    Question Error

  18. The clutch unit coil springs are located in between the pressure plate and the :
    • Disc unit
    • Battle
    • Flywheel
    • Clutch cover

  19. The wheel base of an auto car is :
    • The distance between the rear tyres
    • The distance between the front tyres
    • Length of the vehicle
    • The distance between the centre of the front and rear wheels

  20. The capacity of a lead acid battery is usually expressed in :
    • Ohms
    • Volt
    • Ampere-hours
    • Ampere

  21. __________operates contact breaker points of ignition system.
    • Generator
    • Starting motor
    • Regulator
    • Engine

  22. When the clutch operates in an oil bath, it is called :
    • Dry type clutch
    • Wet clutch
    • Single plate clutch
    • Centrifugal clutch

  23. __________ brings back brake shoes in their original position.
    • Compression spring
    • Tension spring
    • Refracting spring
    • Coil springs

  24. The main advantage of coil spring is that it doesn’t make :
    • Wear and tear
    • Braking tendency
    • Noise problem
    • None of these

  25. The air fuel ratio of a rich mixture is about :
    • 8 : 1
    • 9 : 1
    • 13 : 1
    • 10 : 1

  26. The acid used in lead acid battery is :
    • Hydrofluoric acid
    • Nitric acid
    • Hydrochloric acid
    • Sulphuric acid

  27. __________ gear is used to check straightness, end play of shafts, run out of wheels and backlash of gears.
    • Vaccum gauge
    • Pressure gauge
    • Dual gauge
    • Feeler gauge

  28. The volumetric efficiency of two stroke engine is :
    • Medium
    • Normal
    • Less
    • High

  29. The heavy lubricating oil has :
    • Low viscosity
    • Normal viscosity
    • High viscosity
    • None of these

  30. The firing order of 6 cylinders in-line engine is usually :
    • 1 - 3 - 4 - 2 - 5 - 6
    • 1 - 5 - 3 - 6 - 2 - 4
    • 1 - 3 - 5 - 2 - 3 - 4
    • 1 - 4 - 5 - 3 - 6 - 2

  31. The mixing of air and fuel in diesel engine occurs in :
    • Carburetor
    • Fuel pump
    • Fuel injector
    • Engine cylinder

  32. The CB point gap is measured by using :
    • Micrometer
    • Caliper
    • Pitch gauge
    • Feeler gauge

  33. The most effective air cleaner for diesel engine is :
    • Wet type air cleaner
    • Dry type air cleaner
    • Water bath air cleaner
    • Oil bath air cleaner

  34. The most commonly used car heater is :
    • Diesel type
    • Petrol type
    • Hot water type
    • Hot air type

  35. Piston displacement of an engine is :
    • Volume of cylinder×Stroke×No. of cylinders
    • Pressure of cylinder×No. of cylinder×Stroke
    • Area of cylinder×Stroke×No. of cylinders
    • Area of cylinder×Stroke volume×No. of cylinder

  36. The angle between the central plane of tyre and the direction of motion is known as :
    • Tracking
    • Turning radius
    • Slip angle
    • Toe - out

  37. The firing order for an in -line 4 cylinder IC engine is :
    • 1 - 3 - 2- 4
    • 1 - 2 - 3 - 4
    • 1 - 3 - 4 - 2
    • 1 - 2 - 4 - 3

  38. The brake drum is made of :
    • Aluminium alloy
    • Spring steel
    • High carbon steel
    • Cast iron

  39. The vibrations of single dry plate clutch are absorbed by :
    • Pressure plate
    • Centre hub
    • Clutch Linkage
    • Torsional spring

  40. The trouble of an engine misfiring is likely to result from :
    • Incorrect air fuel mixture
    • Air lock in the fuel lines
    • Damage of ignition coil winding
    • Spark plug gap is too wide

  41. The relationship between resistance, current, and voltage can be expressed in the form of an equation known as :
    • Charle’s Law
    • Faraday’s Law
    • Flemming’s Law
    • Ohm’s Law

  42. Most of the multi speed gear boxes contains :
    • 3 shaft
    • 4 shaft
    • 2 shaft
    • 5 shaft

  43. Brake fluid is a mixture of :
    • Grease and diesel
    • Petrol and grease
    • Petroleum oil and grease
    • Glycerine and alcohol

  44. The fluid generally used in shock absorber is a mixture of :
    • 40% SAE 40 oil and 60% transformer oil
    • 40% SAE 90 oil and 60% turbine oil
    • 60% transformer oil and 40% turbine oil
    • 60% turbine oil and 40% transformer oil

  45. The calorific value of diesel fuel is about :
    • 30.5 mJ/kg
    • 50 mJ/kg
    • 45 mJ/kg
    • 42.5 mJ/kg

  46. The air gap between the central electrode and ground electrode of a spark plug is around :
    • 0.3 mm
    • 0.02 mm
    • 1.2 mm
    • 1 mm

  47. The total piston displacement of all the engine cylinder is called :
    • Compression ratio
    • Engine torque
    • Engine capacity
    • Engine cycle

  48. In petrol engine the compression ratio varies from :
    • 5 : 1 to 7 : 1
    • 9 : 1 to 11 : 1
    • 6 : 1 to 8 : 1
    • 6 : 1 to 9 : 1

  49. The thermostat valve which is opened automatically by means of :
    • High temperature whenever engine desires cooling
    • Low temperature
    • Water pressure
    • Automatic switch

  50. The dilution of lubricating oil is caused by :
    • Worn off particles
    • Water
    • Solid contaminants
    • Fuels

  51. The brake lines in hydraulic brake system are made of :
    • Plastic
    • Rubber
    • Aluminium
    • Steel

  52. __________ brings back shoes in their original position when the brakes are not applied.
    • Compression spring
    • Retracting spring
    • Pressure spring
    • Torsion spring

  53. The frictional horsepower of a well adjusted petrol engine should be nearly :
    • 20%
    • 50%
    • 15%
    • 10%

  54. The automobile body should be sufficiently rigid so as to resist twisting on bad roads, is known as :
    • Air drag
    • Lightness
    • Stiffness
    • Torsional stiffness

  55. __________ types of gear boxes are generally used in motor cycles.
    • Synchronising gear boxes
    • Constant mesh
    • Epicyclic
    • Progressive type

  56. If the engine coolent leaks into the engine oil as a result :
    • Oil becomes thick oil
    • Turns into black colour
    • Appears milky stage
    • None of these

  57. The main function of an alternator in an automobile is to :
    • Convert chemical energy into electrical energy
    • Convert mechanical energy into electrical energy
    • Convert mechanical energy into chemical energy
    • Continually recharge the automobile battery
    Question Error

  58. The purpose of crank case ventilation is to :
    • Remove oil from the crank case
    • Remove harmful particles from the engine
    • Remove air from the crank case
    • All of these

  59. The main function of a governer in an automobile is to :
    • Maintain constant speed
    • Minimize the fuel economy
    • Minimize the engine power
    • Limit the vehicle speed
    Question Error

  60. The advantage of both brazing and soldering is :
    • Lower production cost
    • Good availability of materials
    • Less maintenance charge
    • Many similar and dissimilar materials can be joined

  61. The function of cross wire grooves tyre is :
    • Better steering properties
    • Good traction
    • Better load carrying capacity
    • Absorb shocks due to road unevenness

  62. A Rotameter is a device used to measure :
    • Velocity of fluid
    • Pressure of fluid
    • Volume flow rate of fluid
    • Density of the fluid

  63. ABS stands for :
    • Automatic Braking System
    • Antilock Braking System
    • Advanced Braking System
    • None of these

  64. Newton - meter is the unit of :
    • Energy
    • Torque
    • Power
    • Work

  65. The level of carbon monoxide in the exhaust gases is controlled by :
    • Oxidization
    • Fillerization
    • Carbonization
    • Emission control

  66. The process in which the volume remains constant is :
    • Isobaric process
    • Isochoric process
    • Isothermal process
    • Isentropic process

  67. The exhaust valves are generally made of :
    • High carbon steel
    • Copper alloy
    • Vanadium steel
    • Silichrome steel

  68. The roller bearings are used in :
    • Light load vehicle
    • Heavier load vehicle
    • Light and heavy load vehicles
    • None of these

  69. The clutch facings are usually attached to the plate by :
    • Copper screws
    • Aluminium rivets
    • Brass rivets
    • None of these

  70. The bottom ring on the piston is known as :
    • Compression ring
    • Oil compression ring
    • Grove ring
    • Slip ring

  71. The quantity of heat produced by fuel combustion is called :
    • Volatility
    • Anti-knock value
    • De-carbonization
    • Calorific value

  72. The tool used to measure the shaft run-out is the :
    • Caliper
    • Steel rule
    • Feeler gauge
    • Micrometer
    Question Error

  73. Universal joint which enables the drive shaft to transmit power at :
    • Vertical angle
    • Parallel angle
    • Varied angle
    • None of these

  74. The torque available at the contact between driving wheels and road is called :
    • Brake effort
    • Gear effort
    • Clutch effort
    • Tractive effort

  75. __________ type of starting motor is generally used in automobiles.
    • Shunt motor
    • Compound motor
    • Induction motor
    • Series motor

  76. Which one of the following is not a part of the chassis?
    • Front axle
    • Chassis frame
    • Rear axle
    • Passenger seat

  77. The main purpose of transmission in an automobile is :
    • To vary the power of automobile
    • To vary the speed of the vehicle
    • To vary the torque at the road wheels
    • To vary the pressure at the road wheel

  78. For loosening of cylinder head bolts we should prefer to use :
    • Double end spanner
    • Adjustable spanner
    • Ring spanner
    • Torque wrench

  79. The types of wheels preferred in sports cars are :
    • disc wheel
    • wire wheel
    • magnesium alloy wheel
    • aluminium alloy wheel

  80. For identification the colour of tail light in a car is :
    • White
    • Red
    • Green
    • Yellow

  81. The Indian Constitution is regarded as __________.
    • Federal in form and unitary in spirit
    • Federal
    • Unitary
    • Parliamentary

  82. Which of the following is not a fundamental right?
    • Right against exploitation
    • Equal pay for equal work
    • Equality before law
    • Freedom of Religion

  83. Indian Constitution provides for a __________.
    • Unitary System
    • Presidential System
    • Bicameral System
    • Unicameral System

  84. Plebiscite is used for __________.
    • Enactment of Laws
    • Appointment of Civil Servants
    • Appointment of Judges
    • Ascertaining the views of people on a policy matter of public importance

  85. A candidate seeking election to a State Legislative Assembly must have completed the age of __________.
    • 25 years
    • 30 years
    • 21 years
    • 40 years

  86. The Right to Information Act (RTI) was passed in India in __________.
    • 2013
    • 2005
    • 2017
    • 2016

  87. The Prevention of Atrocities Act, 1989 was passed for __________.
    • Preventing corruption
    • Preventing theft
    • Preventing atrocities against SC/ST people
    • Preventing atrocities against politicians

  88. National Food Security Act was passed in India in __________.
    • 2005
    • 2001
    • 2010
    • 2013

  89. The Western System of education was introduced in India by __________.
    • Lord Macaulay
    • Lord Dalhousie
    • Lord Cornwallis
    • None of these

  90. The man known as father of modern India is __________.
    • Vivekananda
    • Rajaram Mohan Roy
    • Mahatma Gandhiji
    • Indira Gandhi

  91. Chattampi Swamikal was a __________ reformist.
    • Ezhava
    • Pulaya
    • Nair
    • Tribal

  92. ‘Sahodara Sangam’ was founded by __________.
    • K. Kelappan
    • Ulloor
    • Kumaranasan
    • Ayyappan

  93. The leader of Guruvayoor Satyagraha was __________.
    • K. Kelappan
    • Ayyappan
    • Chattampi Swamikal
    • Gandhiji

  94. Who discovered the South-West Monsoon?
    • Marco Polo
    • Ma Huan
    • Hippalus
    • Fahien

  95. George Eliot was the pen name of __________.
    • King George - V
    • Hamilton
    • Homer
    • Mary Ann Evans

  96. The first book printed by Guttenberg was __________.
    • Khuran
    • Bible
    • Newspaper
    • Mahabharata

  97. Calligraphy is __________.
    • The art of beautiful and stylised writing
    • The art of painting
    • The method of reading
    • The method of printing

  98. Philanthropist works for __________.
    • Animals
    • Birds
    • Social upliftment
    • Environment

  99. The Nathula pass connects India to __________.
    • Nepal
    • Burma
    • China
    • Pakistan

  100. The first Woman player to cross 6000 runs in ODI (One Day International) Cricket World Cup is __________.
    • P. Sindhu
    • Sonali
    • Karnam Malleswari
    • Mithali Raj

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