Post : Vocational Instructor in maintenance and Repairs of Automobiles
Department : Vocational Higher Secondary Education
Category Code : 86/17
Qualification : Three year Diploma in Automobile Engineering/ Mechanical engineering
Question Paper Code : 49/18
Date of Test : 12-04-2018
- In order to maintain uniform temperature all along circumference and to avoid sticking, of valves ________ is used.
- Rocker arm
- Guide
- Spring
- Rotator
- An engine having equal bore and stroke is called
- Square engine
- Radial engine
- Wankel engine
- Gas turbine
- To eliminate slapping tendency of pistons towards cylinder, the following method is used
- Cylinder liners
- Gasketing of piston
- Offsetting
- Dual chroming
- Automotive connecting rods are generally made by
- Casting
- Grinding
- Cutting
- Forging
- Steel inserts in auto thermic pistons are used to
- Reduce piston size
- Control the expansion
- Reduce the piston inertia
- Increase temperature
- A dish on the piston head is provided for
- Controlling compression ratio
- Lowering piston weight
- Employing valve clearance
- Avoiding piston slap
- The clearance provided between the cam and tappet to allow for expansion due to heat, is called
- Valve lead
- Valve lash
- Valve clearance
- Tappet clearance
Question error
- The face angle of exhaust valve is
- 65°
- 30°
- 45°
- 70°
- Plastigauge is used to find the clearance of
- Piston pin
- Bearing
- Rings
- Valves
- The valve guide stem clearance is measured by using a
- Inside vernier calliper
- Scriber
- Dial Gauge
- Inside micrometer
- When pressure in the cooling system exceeds a certain predetermined value, the excess pressure will be released to atmosphere through
- Blow off valve
- Pressure valve
- Vacuum valve
- Expansion reservoir
Question error
- The compression ratio at which the detonation starts is known as
- Detonating compression ratio
- Optimum ratio
- Preignition ratio
- HUCR
- In a carburettor, when the choke is applied, the fuel comes out from
- Acceleration part
- Auxiliary jet
- Main jet
- Idle jet
- The phenomenon by which the engine continuing to run even after the ignition is turned off is called
- Run over
- Knocking
- Dieseling
- Run-in
- The end of a philips type screw driver is
- Flat blade
- With four grooves
- Fluted end
- Slab head
- The fluctuation of engine speed during a cycle depends upon
- Speed of flywheel
- Speed of piston
- Weight of crankshaft
- Mass of flywheel
- The stroke is increased when the
- Connecting rod lengthened
- Piston is shortened
- Crank throw is lengthened
- Piston pin shortened
Question error
- The type of fuel injector nozzles used with pre combustion chamber engines are
- Pintle type
- Hole type
- Pinax type
- Pneumatic type
- Identify the one which is not a cold starting device in diesel engines
- Chemical spray
- Heater plugs
- Aneroids
- Decompression devices
- A component which is employed to avoid overheating of ignition coil
- Contact breaker
- Capacitor
- Iron core
- Ballast resistor
- Vacuum advance mechanism provide ignition advance according to
- Fuel consumption
- Engine speed
- Engine load
- Ignition timing
- Spark plug having white insulator tip indicates
- Retarded ignition
- Incorrect dwell
- Very high secondary voltage
- Over advanced ignition
- A component used for accurate timing of electronic fuel injection due to its high accuracy and long term reliability, is
- Hall effect sensor
- Pulse generator
- Thyratron
- CDI system
- A fully discharge battery have its positive plates covered with
- PbO2
- Pb
- PbH2O
- PbSO4
- Number of batteries can be charged at a time using
- Constant voltage charging
- Constant current charging
- Booster charging
- Trickle charging
- In an alternator the magnetic field is produced in the
- Commutator
- Stator
- Rotor
- Housing
- The stator of an alternator have
- One winding
- Three windings
- Two windings
- Four windings
- Pick out the one which is not an inertia drive
- Folo thru drive
- Rubber spring type drive
- Dyer drive
- Standard Bendix drive
- “ISAD” stands for
- Integrated Starter Alternator Damper
- Intelligent Starting And Detachment
- International System of Automotive Designs
- Indian Society for Automobile Designs
- For a stoichiometric air fuel mixture, the excess of air consumed by the engine will be equals
- 0.5
- 1.0
- 1.5
- 0.95
Question error
- Charcoal canister is used to absorb
- Hydro carbon
- Fuel vapour
- Water vapour
- Emissions
- In petrol engines; the three way catalytic converter, the first converter controls
- CO
- HC
- NOX
- Particulate Matter
- Doubling the engine cylinder diameter increases the piston thrust by
- 2 times
- 4 times
- 8 times
- 6 times
- The firing order of a six cylinder engine is
- 1 – 3 – 5 – 6 – 2 – 4
- 1 – 3 – 5 – 2 – 4 – 6
- 1 – 3 – 2 – 6 – 4 – 5
- 1 – 5 – 3 – 6 – 4 – 2
Question error
- The distance between TDC to BDC, in degree
- 180
- 90
- 360
- 45
- The needle valve of the carburettor is closed by means of a
- Spring
- Tickler
- Float
- Throttle
- Increase in the plate area of a battery cell increases
- The voltage
- The specific gravity
- The resistance
- The capacity
- Chemical condition of the battery plates can be identified by
- High Discharge test
- Cadmium test
- Life test
- Sulphation test
- The cut out relay is not essential in alternators because current flow due to fall in voltage below that of the battery is not allowed by
- Commutator
- Third brush
- Rectifier
- Electromagnetic regulator
- The distance from the gasket seat to the end of the threads of a spark plug, is called
- Reach
- End clearance
- Shoulder height
- Plug clearance
- Engine valves are closed by means of
- Rocker arm
- Tappet
- Valve guide
- Spring
- In a distributor type fuel pump, the injection timing is controlled by adjusting
- Rotor speed
- Anti-Dribble valve
- Cam ring
- Plunger stroke
- The purpose of a governor in an engine is to
- Limit speed
- Limit the power
- Limit the fuel economy
- Limit the fuel cutoff
- Pick out the Engine indicator which does not have any inertia effect.
- Electrical type
- Optical type
- Mechanical type
- Hydraulic type
- The vibration damper on a crank shaft of an engine, reduces the
- Longitudinal vibrations
- Sequential vibrations
- Transverse vibrations
- Torsional vibrations
- The angle through which the wheel turns to sustain the side forces, is called
- Slip angle
- Thrust angle
- Steering axis inclination
- Set back angle
- The ratio of tyre section height to the tyre section width is called
- Aspect ratio
- Ply rating ratio
- Offset ratio
- Shoulder ratio
- The decrease in the effectiveness of brakes with prolonged application is called
- Skidding
- Bleeding
- Fading
- Slipping
- In a car, the pillar onto which the front door latches and the rear door is hinged is called
- B pillar
- C pillar
- A pillar
- D pillar
- The suspension link connecting the vehicle body at one end and the live axle beam at the other end is called
- Torsion bar
- Wishbone link
- Trailing arm
- Panhard rod
- A heavy goods vehicle consisting of a tractor and a semi-trailer is called
- Station wagon
- Articulated vehicle
- Coupe with coach
- Van truck
- If the engine is mounted completely inside the drivers cabin, that type chassis is called
- Conventional control type
- Fully inside type
- Engine forward type
- Full forward control type
- Defects in vehicle frame can be identified by checking with
- Laser beam
- Level rod
- Plumb line
- Bevel protractor
- Clutch drag is a trouble experienced due to
- Excessive free pedal play
- Weak clutch springs
- Worn-out clutch facings
- Worn-out clutch splines
- The oil used for gear box lubrication is
- SAE 120
- SAE 90
- SAE 180
- SAE 160
- Rzeppa joint is an example of
- Hooke’s joint
- Constant velocity joint
- Variable velocity joint
- Slip joint
- Final drive mechanism of a vehicle consist of
- Differential unit
- Sungear and axle shafts
- Axle shaft and hub
- Crownwheel and pinion
- In hotchkiss drive rear axle mechanism, the torque reaction is taken up by
- Universal joints
- Shackle
- Springs
- Axle casing
- Torsion bar in suspension system takes only
- Longitudinal stress
- Lateral stress
- Driving thrust
- Shear stress
- Trailing link suspension is an example of
- Live axle suspension
- Hydrostatic suspension
- Independent suspension
- De Dion suspension
- The positive castor in the wheels results in a natural tendency to
- toe-in
- toe-out
- roll-in
- decrease the effort to turn the steering wheel
- The ratio between side force sustained by a wheel and slip angle is called
- Camber force
- Self righting torque
- Pneumatic trail
- Cornering power
- Wheel tramp is a trouble caused by
- Wheel bearing tight
- Incorrect kingpin inclination
- Incorrect castor
- Incorrect tie-in
- In a tyre, the term “ply rating” indicates
- Aspect ratio
- Number of plies
- Thread numbering
- Rated strength
- The tyre sipes helps to
- Increase traction
- Increase tyre life
- Increase cornering effort
- Increase speed
- Antilock Brake System works on the principle of
- Channeling of fluids
- Frictional stability
- Weight transferring
- Pressure modulation
- The shape of reflector used in head lamp of an automobile is
- Round
- Parabolic
- Spherical
- Hyperbolic
- The instrument used to indicate the engine RPM at any instant is called
- Odometer
- Speedometer
- Tachometer
- Oscilloscope
- In an air brake system, the valve meant to control the intensity of braking is called
- Unloader valve
- Brake valve
- Slack valve
- Metering valve
- An epicyclic gear train is used in
- Over drive
- torque convertor
- CVT
- Freewheel unit
- The device used to reduce the exhaust noise is known as
- Exhaust pipe
- Exhaust manifold
- Tail pipe
- Muffler
- As carbon accumulates in a cylinder it causes an increase in
- Clearance volume
- Compression ratio
- Piston displacement
- Volumetric efficiency
- Radiator tubes are generally made of
- Steel
- Aluminium
- Cast iron
- Brass
- Ignition coil is used to
- Step up voltage
- Step up current
- Step up spark
- Step up power
- In a diesel engine fuel injection pump, the effective pressure stroke of plungers are regulated by means of a
- Needle valve
- Control rack
- Cam shaft
- Rotor
- A hot spark plug has a
- Long heat path
- Short heat path
- Short insulator nose
- Bigger thread diameter
- The size of the engine intake valve is
- Smaller than the exhaust valve
- Same as that of exhaust valve
- Larger than the exhaust valve
- Depends on the temperature of ambient air
- A smoky blue exhaust is due to
- Incomplete combustion
- Rich mixture
- Incorrect valve adjustment
- Burning of oil in combustion chamber
- Speedometer drive is usually taken from
- Gear box
- Flywheel
- Axle shaft
- Fan belt
- The knocking in S.I. engines can be prevented, if the end mixture is having
- High density
- Low density
- High temperature
- Low pressure
- The only State in India which is having a river named after it is
- Manipur
- Meghalaya
- Tripura
- Mizzoram
- Port Blair is the Capital of
- Pondichery
- Laksha Dweep
- Daman and Diu
- Andaman and Nicobar Islands
- Which Five Year Plan is also known as “Mahalanobis Model”?
- First
- Second
- Third
- Fourth
- Who was called ‘Father of Indian unrest’?
- M. K. Gandhi
- Dadabhai Navaroji
- Bala Gangadhara Tilak
- Gopal Krishna Gokhale
- Who was the author of ‘Poverty and Un British Rule in India’?
- R. S. Sharma
- Dadabhai Navaroji
- M. K. Gandhi
- A. R. Desai
- Mahatma Gandhi gave the call ‘Do or Die’ during
- Non Co-operation Movement
- Lahore Congress
- Dandi March
- Quit India Movement
- In which year Indian National Congress declared ‘Poorna Swaraj’ as its goal?
- 1906
- 1920
- 1929
- 1942
- Who was made the leader of 1857 revolt?
- Bahadur Shah II
- Jhansi Rani
- Nana Saheb
- Mangal Pandey
- Which is the largest backwater in Kerala?
- Sasthamcotta lake
- Vembanad lake
- Kayamkulam lake
- Ashtamudi lake
- The Cherambadi Pass connects Kerala with
- Coorg
- Mysore
- Coimbatore
- Madurai
- What was the early name of Thycaud Ayya Swamikal?
- Kunjan Pillai
- Kumaran
- Narendran
- Subharayan
- Who was the author of ‘Veena Poovu’?
- Changampuzha
- Vallathol
- Kumaran Asan
- G. Shankara Kurup
- Kallumala Samaram of 1915 was organized by
- Ayyankali
- K. Kelappan
- K. Ayyappan
- Mannath Padmanabhana
- Who was the founder of ‘Prathyaksha Raksha Daiva Sabha’?
- Vagbhatanandan
- Brahmananda Siva Yogi
- Poikayil Yohannan
- T. M. Varghese
- Chattampi Swamikal had taken his last breath at
- Vaikom
- Panmana
- Sivagiri
- Chempazhanthi
- Which day onwards the GST (Goods and Services Tax) was implemented in India?
- April 1, 2017
- June 1, 2017
- July 1, 2017
- August 1, 2017
- Who is the Chief Election Commissioner of India?
- Nasim Zaidi
- V. S. Sampath
- J. M. Lyngdoh
- Achal Kumar Jyoti
Question error
- Which country won the ICC Women’s World Cup in 2017?
- India
- England
- France
- South Africa
- Who won the Nobel Prize for literature in 2016?
- Bob Dylan
- Juan Manuel Santos
- Svetlana Alexievich
- Yoshinori
- Which became the first Indian City declared by UNESCO as World Heritage City?
- Calcutta
- Agra
- Patna
- Ahmedabad
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