PROVISIONAL ANSWER KEY
Question Paper Code: 21/2024/OL
Category Code: 008/2023
Exam: Driver cum Mechanic
Date of Test 13-03-2024
Department Technical Education
Question1:-Radiation and vibration are belongs to ?
A:-Physical hazards
B:-Chemical hazards
C:-Physiological hazards
D:-Psychological hazards
Correct Answer:- Option-A
Question2:-PPE stands for ?
A:-Permanent Protection Equipment
B:-Physical Protection Equipment
C:-Proper Protection Equipment
D:-Personal Protective Equipment
Correct Answer:- Option-D
Question3:-What is the point angle of Centre punch ?
A:-60°
B:-90°
C:-30°
D:-45°
Correct Answer:- Option-B
Question4:-Which tool is used to assemble piston into cylinder ?
A:-Piston ring remover
B:-Piston ring compressor
C:-Coil spring compressor
D:-Torque wrench
Correct Answer:- Option-B
Question5:-Which measuring tool is suitable for both Internal, External and Depth measurement ?
A:-Depth Gauge
B:-Inside micro meter
C:-Bore gauge
D:-Vernier caliper
Correct Answer:- Option-D
Question6:-Pitch of the screw thread in Micro meter ?
A:-0.5 mm
B:-0.01 mm
C:-0.1 mm
D:-1 mm
Correct Answer:- Option-A
Question7:-Which drilling machine is used to drill multiple holes in one setting ?
A:-Radial drilling machine
B:-Pillar drilling machine
C:-Portable drilling machine
D:-Hand operated drilling machine
Correct Answer:- Option-A
Question8:-Multimeter is also known as
A:-Voltage meter
B:-Ammeter
C:-Micro meter
D:-VOM meter
Correct Answer:- Option-D
Question9:-Which engine having longer crank shaft ?
A:-V Type engine
B:-Radial engine
C:-Opposed engine
D:-Inline engine
Correct Answer:- Option-D
Question10:-Which type of engine having Inlet and Exhaust valves arranged in cylinder block ?
A:-I head engine
B:-F head engine
C:-L head engine
D:-OHC engine
Correct Answer:- Option-C
Question11:-What is bore ?
A:-Cylinder diameter
B:-Stroke length
C:-Stroke
D:-Crank throw
Correct Answer:- Option-A
Question12:-Which term, used to express engine efficiency ?
A:-Nm
B:-Percentage
C:-Kgcm²
D:-HP
Correct Answer:- Option-B
Question13:-Which piston is commonly used in two stroke engine ?
A:-Flat head piston
B:-Domed head piston
C:-Concave head piston
D:-Irregular head piston
Correct Answer:- Option-B
Question14:-The engine does not require valve operating mechanism is
A:-2 Stroke petrol engine
B:-4 Stroke petrol engine
C:-4 stroke diesel engine
D:-CI engine
Correct Answer:- Option-A
Question15:-Combustion take place at constant volume process in ?
A:-Petrol engine
B:-Diesel engine
C:-CI engine
D:-Duel cycle engine
Correct Answer:- Option-A
Question16:-Which type of valves used in SI engine ?
A:-Rotary valve
B:-Sleeve valve
C:-Butterfly valve
D:-Poppet valve
Correct Answer:- Option-D
Question17:-Which type of cylinder liner have direct contact with coolant ?
A:-Dry liner
B:-Wet liner
C:-Brake liner
D:-Clutch liner
Correct Answer:- Option-B
Question18:-Which type of bearing is used in crankshaft journals ?
A:-Roller
B:-Bush
C:-Shell
D:-Needle
Correct Answer:- Option-C
Question19:-The difference between major axis and minor axis of cylinder is known as
A:-Tapper
B:-Ovality
C:-Straightens
D:-Stroke
Correct Answer:- Option-B
Question20:-Which tool is used to tighten cylinder head bolt ?
A:-Double end spanner
B:-Pipe wrench
C:-Clyburn spanner
D:-Torque wrench
Correct Answer:- Option-D
Question21:-What is the reason for low oil pressure ?
A:-Oil leakage
B:-High oil level
C:-Clogged air filter
D:-High grade oil used
Correct Answer:- Option-A
Question22:-What is the reason for low power generation in engine ?
A:-Clutch slip
B:-Brake failure
C:-Tyre pressure low
D:-Clogged air filter
Correct Answer:- Option-D
Question23:-What is the result of oxidation of lubricating oil at high temperature ?
A:-Sludge
B:-Lacquer
C:-Oil dilution
D:-Crystallisation
Correct Answer:- Option-B
Question24:-What is the percentage of oil added to petrol in Petroil lubrication system ?
A:-50% to 60%
B:-25% to 30%
C:-10% to 15%
D:-2% to 3%
Correct Answer:- Option-D
Question25:-Which type of oil pump is mostly used with Overhead cam engines ?
A:-Crescent type
B:-Rotor type
C:-Vane type
D:-Plunger type
Correct Answer:- Option-A
Question26:-Which is not a reason for high oil pressure in lubrication system ?
A:-High viscosity
B:-Clogged oil gallery
C:-Oil dilution
D:-Stuck closed oil relief valve
Correct Answer:- Option-C
Question27:-Quick engine warming is obtained in ____________ cooling system.
A:-Air
B:-Thermosyphon
C:-Pump circulation
D:-Oil
Correct Answer:- Option-A
Question28:-Pressure inside the radiator with a pressure cap is always __________
A:-Atmospheric pressure
B:-Higher than atmospheric pressure
C:-Lower than atmospheric pressure
D:-Vacuum pressure
Correct Answer:- Option-B
Question29:-An anti-freeze solution should have
A:-Low specific heat capacity
B:-High viscosity
C:-High freezing point
D:-High boiling pint
Correct Answer:- Option-D
Question30:-Engine over cooling may result due to
A:-Thermostat stuck open
B:-Thermostat stuck closed
C:-Broken fan belt
D:-Blocked radiator
Correct Answer:- Option-A
Question31:-To avoid surging of fuel inside the fuel tank ___________ is provided.
A:-Baffles
B:-Air vent
C:-Filler cap
D:-Drain plug
Correct Answer:- Option-A
Question32:-The petrol fuel pump pumps the petrol into
A:-Fuel tank
B:-Float chamber
C:-Fuel filter
D:-Engine
Correct Answer:- Option-B
Question33:-Rich air-fuel mixture is generally required during
A:-Idling
B:-Acceleration
C:-Starting
D:-Cruising
Correct Answer:- Option-C
Question34:-An example of a 'Constant Vacuum' type carburettor is
A:-Zenith carburettor
B:-Carter carburettor
C:-Solex carburettor
D:-SU carburettor
Correct Answer:- Option-D
Question35:-Maruti 800 car uses ___________ type of carburettor.
A:-Solex Mikuni
B:-Solex
C:-Zenith
D:-SU
Correct Answer:- Option-A
Question36:-Cone shaped extension on pintle type diesel nozzle provides the advantages of
A:-High pressure
B:-Self cleaning
C:-Increased atomisation
D:-All of the above
Correct Answer:- Option-B
Question37:-The component of fuel injection pump which helps to avoid dribbling of fuel at injector nozzle is ________
A:-Control rack
B:-Plunger
C:-Delivery valve
D:-Cam follower
Correct Answer:- Option-C
Question38:-In electronic fuel injection system the injection and ignition timing is determined on the basis of _____________ sensor signals.
A:-Manifold absolute pressure
B:-Lambda sensor
C:-Intake air temperature
D:-Crank position
Correct Answer:- Option-D
Question39:-In CRDi the fuel feed pump delivery is controlled by ____________
A:-Rail pressure sensor and ECU
B:-Manifold pressure sensor and ECU
C:-Cam position sensor and ECU
D:-ECM and Modulator
Correct Answer:- Option-A
Question40:-In a Solex carburettor the chance of occuring flatspot at extreme high speed is eliminated by
A:-Acceleration pump jet
B:-Economiser jet
C:-Tickler
D:-Strangler
Correct Answer:- Option-B
Question41:-The number of positive and negative plates contained in lead acid battery is ___________
A:-Negative plate is one less than positive plate
B:-Negative plate is one more than positive plate
C:-Positive plate is equal to the negative plate
D:-Positive plates is one more than negative plate
Correct Answer:- Option-B
Question42:-A ___________ is an electrochemical device consisting of two electrodes and an electrolyte.
A:-Ignition Coil
B:-Capacitor
C:-Cell
D:-Regulator
Correct Answer:- Option-C
Question43:-A discharged lead acid battery electrolyte is _________
A:-Dilute Sulphuric acid
B:-Lead sulpahate
C:-Sulphuric acid
D:-Water
Correct Answer:- Option-D
Question44:-___________ is the specific gravity reading range of a fully charged lead acid battery.
A:-1.200 - 1.230
B:-1.240 - 1.250
C:-1.260 - 1.280
D:-1.110 - 1.140
Correct Answer:- Option-C
Question45:-Dwell angle means ___________
A:-The time for which the contact points remain closed
B:-The distance between the cam lobes
C:-The time for which the contact points opened
D:-The length of Rotor
Correct Answer:- Option-A
Question46:-Which part in the Ignition system is step up the low voltage of battery in to high voltage ?
A:-Distributor
B:-Ignition coil
C:-Condencer
D:-C.B points
Correct Answer:- Option-B
Question47:-Firing order of a four cylinder Inline engine is _________
A:-1-2-3-4
B:-1-3-2-4
C:-1-4-2-3
D:-1-3-4-2
Correct Answer:- Option-D
Question48:-____________ is the exact instant a spark is sent to the spark plug and is expressed in degrees of crankshaft rotation relative to TDC.
A:-Ignition advance
B:-Ignition timing
C:-Combustion
D:-Spark advance
Correct Answer:- Option-B
Question49:-__________ type of DC starter motor is generally used in automobiles.
A:-Series type
B:-Compound type
C:-Parallel type
D:-Star type
Correct Answer:- Option-A
Question50:-Solenoid switch is used in __________ circuit.
A:-Charging
B:-Headlight
C:-Ignition
D:-Starting
Correct Answer:- Option-D
Question51:-What is the function of over running clutch in the starting system ?
A:-Protect armature from damage
B:-Prevent sliding movement of pinion
C:-Operate the solenoid
D:-Drive the armature shaft
Correct Answer:- Option-A
Question52:-What is the material used to make diodes ?
A:-Mica
B:-Silicon
C:-Alumina foil
D:-Graphite
Correct Answer:- Option-B
Question53:-__________ type alternator is commonly used in automobiles.
A:-Single phase
B:-Three phase
C:-Two phase
D:-Direct current
Correct Answer:- Option-B
Question54:-In an alternator, the current is generated in the ___________
A:-Rotor
B:-Stator
C:-Rectifier
D:-Voltage Regulator
Correct Answer:- Option-B
Question55:-Which of the following is also known as cardan shaft ?
A:-Main shaft
B:-Clutch shaft
C:-Propeller shaft
D:-Half shaft
Correct Answer:- Option-C
Question56:-In this types of final drive gear, the pinion axis of the gear is off set to the center line of the crown wheel.
A:-Hypoid gear
B:-Straight bevel
C:-Spiral bevel
D:-All of these
Correct Answer:- Option-A
Question57:-Increasing the diameter of the clutch driven plate will result
A:-Reduce inertia
B:-Increase inertia
C:-Un even wear
D:-Reduce coefficient of friction
Correct Answer:- Option-B
Question58:-It is working on the principle of relative slip between the input and output member cells facing to each other
A:-Semi centrifugal clutch
B:-Centrifugal clutch
C:-Duel mass flywheel
D:-Fluid fly wheel
Correct Answer:- Option-D
Question59:-The amount of vortex flow is reduced, when the
A:-Turbine speed approaches the speed of impeller
B:-Turbine speed less
C:-Turbine stationary
D:-Impeller speed high
Correct Answer:- Option-A
Question60:-Which among the following is not a tractive resistance ?
A:-Air resistance
B:-Rolling resistance
C:-Gradient resistance
D:-None of these
Correct Answer:- Option-D
Question61:-The governor valve in the automatic transmission is driven by
A:-Engine vaccum
B:-Clutch
C:-Transmission output shaft
D:-Transmission input shaft
Correct Answer:- Option-C
Question62:-In a dual mass fly wheel, the clutch function is occurred between
A:-Primary mass and transmission
B:-Secondary mass and transmission
C:-Primary mass and engine
D:-Primary mass and secondary mass
Correct Answer:- Option-B
Question63:-What are the reason for humming noise from the rear axle ?
A:-Worn out bearing
B:-Worn out gear
C:-Excessive clearance between pinion and crown
D:-All of these
Correct Answer:- Option-D
Question64:-In this type of axle assembly, a single bearing is placed between the hub and the axle casing
A:-Semi floating
B:-Three quarter floating
C:-Full floating
D:-None of these
Correct Answer:- Option-B
Question65:-The amount of light passing through an area in one second is called
A:-Luminous flux
B:-Luminous intensity
C:-Brightness
D:-Illumination intensity
Correct Answer:- Option-A
Question66:-To limit the current during over loading in the power window circuit, one or more ______ switches are installed.
A:-Pressure
B:-Friction
C:-Thermal
D:-None of these
Correct Answer:- Option-C
Question67:-Expansion valve in the car air conditioning mounted at the
A:-Outlet side of the evaporator
B:-Inlet side of evaporator
C:-In the condenser
D:-Outlet side of condenser
Correct Answer:- Option-B
Question68:-The wiper arms in some types of windscreen wipers are always stop at the edge of the windscreen, irrespective of the instant switching off. This is
achieved by means of a
A:-Toggle switch
B:-Thermal switch
C:-Limit switch
D:-Pressure switch
Correct Answer:- Option-C
Question69:-It is the most promising types of rechargeable and superior to other battery technologies in the terms of application to battery electric vehicle
A:-Lithium-Ion battery
B:-Lead-acid battery
C:-Nickel-Cadmium battery
D:-Nickel-Zinc battery
Correct Answer:- Option-A
Question70:-Find the power train architectures of a hybrid electric vehicle
A:-Power-Split hybrid
B:-Complex hybrid
C:-Series hybrid
D:-All of these
Correct Answer:- Option-D
Question71:-The oscillation of the suspension spring is controlled by __________
A:-Damper
B:-Shackle
C:-Helper spring
D:-Stabilizer bar
Correct Answer:- Option-A
Question72:-In the following, which component comes under "Unsprung weight" ?
A:-Engine
B:-Transmission system
C:-Steering Knuckle
D:-Frame
Correct Answer:- Option-C
Question73:-The energy stored per unit volume is almost ________ in the case of coil spring than the leaf spring
A:-Same
B:-Double
C:-Half
D:-One fourth
Correct Answer:- Option-B
Question74:-Tilt of the car wheel from vertical is ____________
A:-Castor
B:-Camber
C:-King pin inclination
D:-Toe-in
Correct Answer:- Option-B
Question75:-If the castor angle of both side wheels are not equal, vehicle move _________
A:-straight
B:-no effect
C:-towards the higher castor side
D:-towards the lesser castor side
Correct Answer:- Option-D
Question76:-The oil used in Hydraulic power steering system is _________
A:-SAE 10 W
B:-SAE 40 W
C:-SAE 90
D:-SAE 140
Correct Answer:- Option-A
Question77:-Aspect ratio is the ratio of ____________
A:-Tyre width and Tyre dia
B:-Tyre dia and Rim dia
C:-Tyre height and Tyre width
D:-Tyre height and Rim dia
Correct Answer:- Option-C
Question78:-Both side wear of a tyre is due to
A:-In correct castor
B:-Incorrect camber
C:-Over inflation
D:-Under inflation
Correct Answer:- Option-D
Question79:-To achieve maximum efficiency, the ratio of braking at the front and at the rear wheels should be
A:-50% at the front and 50% at rear
B:-60% at front and 40% at rear
C:-40% at front and 60% at rear
D:-20% at front and 80% at rear
Correct Answer:- Option-B
Question80:-Ply rating means
A:-Rated strength
B:-Number of plies
C:-Aspect ratio
D:-Under inflation
Correct Answer:- Option-A
Question81:-___________ means any goods carriage the gross vehicle weight of which, or a tractor or a road-roller the unladen weight of either of which, exceeds
12000 kilograms.
A:-Light motor vehicle
B:-Medium goods vehicle
C:-Heavy goods vehicle
D:-Heavy passenger vehicle
Correct Answer:- Option-C
Question82:-The motor vehicle with at least four wheels used for carrying passengers is called
A:-Category N
B:-Category L1
C:-Category L2
D:-Category M
Correct Answer:- Option-D
Question83:-Validity of learners licence
A:-30 days from the date of issue of the learners licence
B:-6 months from the date of issue of the learners licence
C:-3 months from the date of issue of the learners licence
D:-1 year from the date of issue of learners licence
Correct Answer:- Option-B
Question84:-International driving permit is issued by a licensing authority shall be in form
A:-Form 6A
B:-Form 5A
C:-Form 7
D:-Form 3
Correct Answer:- Option-A
Question85:-When a vehicle approaches an unguarded railway level crossing, before crossing it, the driver shall
A:-Sound horn and cross the track as fast as possible
B:-Wait till the train passes
C:-Stop the vehicle on the left side of he road, get down from the vehicle, go to railway track and ensure that the track is clear on both sides
D:-Wait for another vehicle to pass
Correct Answer:- Option-C
Question86:-Any motor vehicle used or adapted to be used for the carriage of passengers for hire or reward and includes a maxi cab, a motor cab, contract
carriage and stage carriage, is known as
A:-Public service vehicle
B:-Private service vehicle
C:-Heavy goods vehicle
D:-Articulated vehicle
Correct Answer:- Option-A
Question87:-Grace period of tax payment of goods carriages ordinarily kept in the state is
A:-30 days from the date of commencement of the quarter
B:-45 days from the date of commencement of the quarter
C:-One month from the date of commencement of the quarter
D:-14 days from the date of commencement of the quarter
Correct Answer:- Option-C
Question88:-Where the road centre is marked with continuous yellow line the vehicle should
A:-Allow to overtake only through the right side of yellow line
B:-Cross the line only when overtaking a vehicle in front
C:-Reduce speed and proceed
D:-Not touch or cross the yellow line
Correct Answer:- Option-D
Question89:-While you are approaching an intersection where the yellow signal light is blinking you should
A:-Stop the vehicle and wait for green light to appear
B:-As there is no restriction proceed at the same speed
C:-Slow down the vehicle and may drive into the intersection or pedestrain crossing with caution after giving way to the pedestrains and vehicles which are already within the intersection
D:-Sound horn and proceed
Correct Answer:- Option-C
Question90:-Maximum distance allowed between towing and towed vehicles
A:-15 meters
B:-5 meters
C:-6 meters
D:-10 meters
Correct Answer:- Option-B
Question91:-Which of the following is/are correct ?
(i) Where a road is divided by a longitudinal white solid line, driver shall not cross the white solid line.
(ii) On a road having a single broken line along with a solid line, driver of the vehicle driving on the left of broken line can cross the broken line inorder to overtake.
(iii) On a road having a single broken line along with a solid line, driver of the vehicle driving on the left of solid line can cross the solid line inorder to overtake.
A:-Only (i) and (ii)
B:-Only (i) and (iii)
C:-Only (ii) and (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-A
Question92:-Which of the following is/are correct ?
(i) A motor vehicle approaching a 'roundabout' shall choose the lane relevant to the direction of its further movement.
(ii) While entering a 'roundabout', traffic already in the roundabout shall have the right of way.
(iii) The driver shall use indicators when changing lanes within the roundabout.
A:-Only (i) and (ii)
B:-Only (ii) and (iii)
C:-Only (i) and (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-D
Question93:-What is the use of 'dipstick' ?
A:-It is used to check the coolent level
B:-It is used to check the oil level
C:-It is used to check the brake fluid
D:-All of the above
Correct Answer:- Option-B
Question94:-Which of the following is the correct order of priority for emergency duty vehicles in the road ?
A:-Ambulance, Fire Service Vehicle, Police vehicle and Power Supply vehicle
B:-Ambulance, Police vehicle, Fire Service vehicle and Power Supply vehicle
C:-Fire Service vehicle, Ambulance, Police vehicle and Power Supply vehicle
D:-Fire Service vehicle, Ambulance, Power Supply vehicle and Police vehicle
Correct Answer:- Option-C
Question95:-MSM and PSL rule means
A:-Man - Signal - Mirror and Position - Speed - Light
B:-Mirror - Signal - Maneuver and Position - Speed - Look
C:-Mirror - Signal - Man and Position - Speed - Light
D:-Maneuver - Signal - Mirror and Position - Steering - Look
Correct Answer:- Option-B
Question96:-Maximum permissible speed for Heavy Goods Carriage on State Highways and Major District roads in Kerala
A:-75 km/hr
B:-70 km/hr
C:-65 km/hr
D:-60 km/hr
Correct Answer:- Option-C
Question97:-Which of the following is/are correct ?
(i) Maximum permissible speed for Heavy Passenger Vehicle on National Highway - Four Lane road in Kerala is 90 km/hr.
(ii)Maximum permissible speed for Heavy Passenger Vehicle on State Highway - Four Lane roads in Kerala is 85 km/hr.
(iii) Maximum permissible speed for Heavy passenger Vehicles on roads within city limit of Kerala is 50 km/hr.
A:-Only (i) and (ii)
B:-Only (i) and (iii)
C:-Only (ii) and (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-B
Question98:-The minimum alcohol content in blood to constitute the offence under Section 185 (Drunken Driving) of Motor Vehicles Act is
A:-25 mg per 100 ml
B:-30 mg per 100 ml
C:-25 mg per 1000 ml
D:-30 mg per 1000 ml
Correct Answer:- Option-B
Question99:-Which of the following is/are correct ?
(i) 'FASTag' is mandatory for 'L' catagory vehicles
(ii) 'FASTag' is mandatory for 'M' catagory vehicles.
(iii) 'FASTag' is mandatory for 'N' catagory vehicles.
A:-Only (i) and (ii)
B:-Only (i) and (iii)
C:-Only (ii) and (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-C
Question100:-Which of the following is/are correct ?
(i) Autorickshaw require 'PERMIT' to conduct service on the road.
(ii) Ambulance require 'PERMIT' to conduct service on the road.
(iii) Motor car require 'PERMIT' to conduct service on the road.
A:-Only (i)
B:-Only (ii)
C:-Only (iii)
D:-All of the above (i), (ii) and (iii)
Correct Answer:- Option-A
Driver cum Mechanic Question Paper and Answer Key
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment