MOTOR MECHANICSTORE ASSISTANT - GROUND WATER.pdf (Size: 1.45 MB / Downloads: 0)

232/2015
Maximum: 100 marks
Time : 1 hour and 15 minutes

1. Before a mechanic get under a vehicle he should make sure that:
(A)The tyres are inflated
(B) He use a creeper
(C ) The jack handle is down
(D) The vehicle is on safety stands

2. In automobile servicing concept what is meant by Tear down”?
(A) Adjusting
(B)Disassembling
(C ) Reassembling
(D)Machining

3.Which is most suitable to check spark plug gap?
(A) Feeler gauges
(B)Micrometer
(C ) Wire gauges
(D)Vernier caliper

4.The reading of a metric micrometer is in :
(A) Centimetre
(B)Thousands of an inch
(C ) Thousands of millimetre
(D)Metre

5.To measure the taperness of a cylinder ais used.
(A) Dial indicator
(B)Vernier caliper
(C ) Depth gauge
(D)Micrometer

6.Splines and keys in mechanical assemblies :♦
(A) Fasten studs into place
(B)locks nuts to bolts
(C ) Locks gears to shafts
(D)Used as set screws

7.Castle nuts are normally used with :
(A) Snap rings
(B)Cotter pins
(C ) Bolt heads
(D)Lock washers

8.Gaskets are used to:
(A) Prevent any leakage of fluid
(B)Seals out pressure
(C ) Takes up space as shims
(D)Any of the above

9. Taps are used to:
(A) Cut internal threads
(B)Cut external threads
(C ) Enlarge n hole
(D)Both (A) and (B)

10.A 'Clutch spring compressor’ compresses-of the clutch while dismantling.
(A) Cushioning springs
(B)Thrust springs
(C ) Anti rattling springs
(D)Torsional springs

11.As piston moves towards TDC in compression stroke :
(A) The mixture gets hotter
(B) Even distribution of mixture happens
(C ) Pressure rise occurs
(D) All of the above

12.The stroke in which both the valves are closed is•
(A) Suction
(B)Compression
(C ) Expansion
(D)Both (B) and ©

13.To further smoothen out the flow of power engines have:
(A)Counter weights
(B) Fly wheels
(C ) Crank pins
(D) Crank webs

14.To convert the reciprocating motion to rotary motion the engines have:
(A)Cam shaft and crank shaft
(B)Pistons and connecting rods
©Connecting rods and crank shaft
(D)Cam shaft and rocker arms

15.How many times in minute the inlet valvo of a four stroke engine working at 1000 RPM open and close?
(A)500
(B)1000
©1500
(D)2000

16.Valve rotators are used for :
(A)Rotating the valves on its own axis (C ) Even wear distribution of valves
(B) Reducing the warping of valves (D) All of the above

17.VTEC stands for :
(A)Variable valve Timing Electronic Cam shaft
(B)Variable valve Timing and lift Electronic control
©Valve Timing Electrical Cam shaft
(D)None of the above

18.Most commonly used valve actuating mechanism in modern cars is :
(A)T-head
(B) I-head .
(C ) L-head
(D) F-head

19.The carbon deposits on the cylinder head is removed with :
(A)Scrapper brush
(B) Water jet
(C ) Soap solution
(D) Kerosene

20.In a single cylinder two stroke engine running at 2000 RPM the number of power strokes per minute is:
(A)1000
(B) 4000
(C ) 2000
(D) none

21.In an Otto cycle engine, the operation sequence is :
(A)Compression, exhaust, power
(B)Power, induction, exhaust
©Compression, power, exhauHt
(D)Compression, power, induction

22.factor for ignition in diesel engines is :
(A)Pressure of injection
(B)High compression ratio
©Abundance of air
(D)All of the above

23.In a two stroke engine at the time of spark occurs ;
(A)Transfer port has just opened
(B)Fresh gas is being compressed
©Fresh charge is being transferred to inlet
(D)Any of the above

24.Which of the following is a rich air fuel ratio?
(A)9:1
(B)15:1
©13:1
(D)11:1

25.The percentage of combustion heat, available at crank shaft for useful work output is : 
(A) 35%
(B) 55%
(C ) 60%
(D) 20%

26.In an engine having swirl combustion chamber :
(A) 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 piston pin offset is to :
(A)Perfectly balance the piston during power stroke .
(B)Prevent piston slip
©Centralise the piston
(D)Reduce piston slap

28.Some automobile engines have glow plugs to :
(A)Warn the driver about engine overheat
(B)Preheat the fuel for easier starting
©Preheat the combustion chamber
(D)Warm the passenger area

29.The upper and lower ends of the combustion chamber is formed by :
(A) Piston and cylinder block
(B) Cylinder walls and piston
(C ) Piston rings and cylinder head
(D) Cylinder head and piston

30.. Piston rings are provided to:
(A)Completely seal the combustion gas
(B)Hold the piston concentric to cylinder walls,
©Hold a fine oil film on cylinder walls
(D)Both (A) and ©

31.Thermostat valve helps the engine to :
(A)Keep the oil temperature at operating values
(B)Keep the coolant temperature at operating values
©Prevents the engine from overheating
(D)Both (B) and ©

32.In a four stroke engine the cam shaft turns at:
(A)Same speed as the crank shaft
(B)Double the speed as the crank shaft
©Half the speed of the crank shaft
(D)One fourth the speed of the crank shaft

33.Mechanic X says that all OHC engines have rocker arms. Mechanic Y says that some use bucket tappets and no rocker arms. Who is correct?
(A)Mechanic X
(B)Mechanic Y
©Both X and Y
(D)Neither X nor Y

Valve overlap occurs at:
(A)the end of exhaust stroke
(B)the beginning of power stroke
©the beginning of compression stroke
(D)the end of power stroke

35.The rate at which work is done, is measured in terms of:
(A)Energy
(B)Torque
©Inertia
(D)Power

36.The volume of air contained above the piston when the piston is at TDC is 
(A)Clearance volume
(B)CC
©Swept volume
(D)Stroke volume

37.The condition of exploding the end charge before the completion of normal combustion is :
(A)Pre-ignition
(B)Rumble
©Detonation
(D)Stalling

38.Low Cetane fuel implies that:
(A)It takes longer timeto ignite
(B)It takes lesser timeto ignite
©Ignites as soon as itentersthe cylinder
(D)Both (B) and ©

39. Mechanical fuel pumps are operated by :
(A) Cam in the cam shaft
(B)Eecentric in the crank shaft
(C ) Skew gear in the cam shaft
(D)Eccentric in the cam shaft

40.Taper needle jet is found in :
(A) Solex carburettor
(B)SU carburettor
(C ) Zenith carburettor
(D)Carter carburettor

41.Generally turbo charger is operated by:-
(A) A belt driven by the engine crank shaft
(B)A gear attached to the cam shaft 
©A chain and sprocket drive 
(D)Exhaust gas  .

42.Qualitative governing is best suited for :
(A) High speed engines
(B)Slow speed engines
(C ) Diesel engines
(D)Petrol engines

43.Growler is associated with :
(A) Battery 
(B)Armature
(C ) CB point
(D)FIP

44.High compression ratio result in :•
(A) Increased NOx emission
(B)More soot in exhaust
(C ) Reduced HC and CO emission
(D)All of the above

45.PCV valve is located between :
(A) Crank case and inlet manifold
(B)Crank case and carburettor
(C ) Air cleaner and crank case
(D)Air cleaner and carburettor

46.CO in the exhaust of a vehicle should not be more than: 
(A)0.5%
(B)1%
©1.5%
(D)2% 

47.The temperature below which the oil will not in four wheel drive vehicles.
(A) Fire point 
(B)Flash point
(C ) Pour point
(D) Flow point

18. Transfer case is a type of
(A) Crank case
(B)Gear Box
(C ) Transmission shaft
(D)Differential

49.Gear Clash while shifting is due to :
(A) Incorrect clutch adjustment
(B)Damaged synchronizer unit
(C ) Low level gear oil
(D)Any of the above

50.In case of front engine rear wheel drive cars the driveshaft has :
(A) Minimum one universal joint
(B)Maximum two universal joint
(C ) Minimum two universal joint
(D)Two slip joints

51.A slip joint permits changes in :-
(A) Wheel base
(B)Wheel track
(C ) Wheel alignment
(D)None

52.Alternator produces electricity in its :
(A) Stator windings
(B)Rotor field windings
(C ) Commutator
(D)Regulator

53.While trying to start an engine it cranks slowly but doesn’t start .It may be due to :
(A) Low temperature
(B)Run down battery
(C ) Damaged fuel system
(B)Any of the above

54.Approximate starter pinion-ring gear, gear ratiois
(A) 5:1
(B)15:1
(C ) 25:1
(D)30:1

55.When it is needed to top up the lead acid battery frequently, it is due to :
(A) Sulfation
(B)Overloading
(C ) Overcharging
(D)Long standing period

56.Hydrometer is device used to check :
(A) Voltage of a cell
(B)Specific gravity' of acid
(C ) Voltage of a battery
(D)Temperature of electrolyte

57. In hydraulic system Brake binding is due to :
(A) Incorrect free pedal play adjustment
(B)Blocked by pass port
(C ) Blocked air vent in master cylinder
(D)Any of the above

58.Double de-clutching is associated with :
(A) Constant mesh gear box
(B)Synchromesh gear box
(C ) Hydraulic clutch
(D)Magnetic clutch

59.Gear clash during shifting may be caused by anyone iof the following except:
(A) Defective synchronizer ,
(B)Incorrect pedal play
(C ) Too low idle speed
(D)Unadjusted shift mechanism

60.How many synchronizer units are there in a three speed transmission?
(A) One
(B)Two
(C ) Three
(D)Four

61.How many gears are there in the main shaft of a four speed transmission?
(A) Six
(B)Five
(C ) Four
(D)Three

62.Pick the odd one out:
(A) Half shaft
(B)Clutch shaft
(C ) Main shaft
(D)Lay shaft

63.A humming noise from the under body of a rear wheel drive vehicle is due to :
(A) Bend propeller shaft
(B)Incorrect differential meshing
(C ) Faulty gear box
(D)Binding brake

64.The type of front axle in which the king pin is usually fixed in the stub axle forging and its ends turn in the forked end of the axle beam is :
(A)Lemoine
(B) Inverted lemoine
©Reversed elliot
(D)Elliot

65.The tilt of the front wheelsfrom vertical is called :
(A)Caster
(B)Camber
©King Pin Inclination
(D)Toe in

66.To reduce the vibration and for steability of a vehicle :
(A)Higher unsprung weight is desired
(B)Suspension spring of high frequency can be used 
(C ) Lower unsprung weight is desired
(D)Lower body weight is desired

67.Stroke length is equal to :
(A) Double the crank throw
(B) Same as the crank throw
©Half of crank throw
(D) Three times the crank throw

68.Which is not true with respect to Disc brakes? 
(A) Uniform wear 
(B) Rasy to service
(C ) High initial cost
(D) Concealed frictional surface

69.Generally five wheel tyre rotation starts from which side wheel?
(A)Front right
(B)Front left
©Rear left
(D)Rear right

70.Which of the following axle shaft has to take full load?
(A)Three quarter floating
(B)Fullfloating
©Semi floating
(D)Both (A) and (B)

71.Aspect ratio of tyre is its :
(A) Section width/Section height
(B) Section height/Section width
(C ) Total width/Total height
(D) Rim diameter / Tyre diameter

72. In a tyre it is designated as T200/75 R16’. What is the digit 200?
(A) Section width
(B)Section height
(C ) Rim diameter
(D)Aspect ratio

73. What is the symptom of atmospheric diesel engine?air enter the water cooling system of a multi cylinder
(A) Overheating
(B)Coolant become greenish
(C ) Coolant become reddish
(D)Coolant become viscous

74.What is the CC value of new TATA Nano Gen X Easy shift car?
(A)424.
(B)524
©624
(D)724

75.The type of body movement of a vehicle in which the vehicle turn oh its own longitudinal axis is:
(A)Pitching 
(B)Bouncing
©Yawing
(D)Rolling

76.Which gear will not revolve when the vehicle is moving on straight path?
(A)Planetary gear
(B)Sun gear
©Grown wheel
(D)Pinion

77.The rear axle thrust acting on rear axle casing is transferred to frame by 
(A)Pan hard rods
(B)Radius rods
©Tie rods
(D)Torque tubes

78.Compared with spiral bevel gear, a hypoid gear has the advantage of:
(A)higher efficiency
(B)weaker bearings can be used
©higher or lower propeller shaft can be used
(D)All of the above

79.The pollutant that forms at higher combustion temperatures is :
(A)CO
(B)HC
©NO*
(D)H2O

80.Variable steering gear ratio can be achieved in the case of:
(A)Worm and sector
(B)Worm and nut
©Rack and pinion
(D)Worm and Roller

81.Who wasthe first recipient of Ezhutachan Purasknrnim?
(A)Takazhi Sivasankaran Pillai
(B)O.N.V. Kurup
©M.T. Vasudevan Nair
(D)Sooranad Kunjan Pillai

82.The last Asian games was held in :
(A)South Korea
(B)China
©North Korea
(D)Japan

83.Name theorganisation founded byPandit Karuppan :
(A)Hindu Dharma Paripalana Sabha
(B)Kalyana Dayani Sabha
©Yogakshema Sabha
(D)Dharma Paripalana Sabha

84.The first woman President of Indian National Congress :
(A)Sarojini Naidu
(B)Annie Besant
©Vijayalakshmi Pandit
(D)Kasturba Gandhi

85.Who was the Prime Minister of India, when Panchasheel was adopted? 
(A) Lai Bahadur Shastri
(B) Moraji Desai
(C ) Jawaharlal Nehru
(D) Indira Gandhi

86.Swarnajayant, Gram Swarozgar Yojana was launched in :
(A) 1990
(B) 1999
(C ) 2003
(D) 2008

87.Ranajith Singh Gold cup is associated with :
(A) Hockey’
(B) Football
©Cricket
(D)Tennis

88.Who won the Nobel prize for literature in 2014?
(A)Eric Betzig
(B)Rauf Mamedeo
©Eliud Kipchage
(D)Patrick Modiano

89.The headquarters of Kerala Lalita Kala Academy is at: 
(A) Thrissur
(B)Kochi
(C ) Thiruvananthapuram
(D)Kozhikode

90.The palace at Mattanchery was built by : 
(A) British (C ) Zamorins
(B) Dutch (D) Portuguese

91.Whose birthday is celebrated as National Youth Day?
(A)BhagatSingh
(B)B.R. Ambedkar
©SwamiVivekananda
(D)Rajeev Gandhi

92.McMohan line is the demarcation line between India and :
(A)China
(B)’Pakistan
©Nepal
(D)Burma

93.The famous Ajanta-Ellora is situated in :
(A) Madhya Pradesh
(B)Rajasthan
(C ) Maharashtra
(D)Delhi

94.Name the newspaper founded by Vakkom Abdul Khadar Maulavi:
(A) Swadesabhimani
(B)Chandrika
(C ) Malayala Manorama
(D)Deepika

95.‘Odayilninnu’ is a novel written by :
(A) P.C. Kuttikrishnan
(B)S.K.Pottekkad
(C ) O.V. Vijayan
(D)Kesavadev

96.Where did the Jallianwala Bagh Massacre occur?
(A) Jalandhar
(B)Delhi
(C ) Amritsar
(D)Ludhiana

97.Who was the first secretary of SNDP?
(A) Sree Narayana Guru
(B)Kumaranasan
(C ) Dr. Palpu
(D)C.Govindan

98.Who received the Dada Sahib Phalke award in 2013?
(A) Syam Benegal
(B)B.R. Chopra 
(C ) Gulzar
(D)Gireesh Karnad

99.‘Pracheena Malayalam’ was written by :
(A) Ezhutachan
(B)Vaikunda Swamikal
(C ) Herman Gundert
(D)Chattampi Swamikal

100.Who appoints the chairman of UPSC?
(A) The Prime Minister of India
(B)The President of India
(C ) The Chief Justice of India
(D)The Speaker of Lok Sabha