Driver cum Mechanic Question Paper and 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 ?
        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
        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
        D:-Crank throw
        Correct Answer:- Option-A

Question12:-Which term, used to express engine efficiency ?
        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 ?
        Correct Answer:- Option-C

Question19:-The difference between major axis and minor axis of cylinder is known as
        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 ?
        C:-Oil dilution
        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.
        C:-Pump circulation
        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.
        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
        Correct Answer:- Option-B

Question33:-Rich air-fuel mixture is generally required during
        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
        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
        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
        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
        Correct Answer:- Option-C

Question43:-A discharged lead acid battery electrolyte is _________
        A:-Dilute Sulphuric acid
        B:-Lead sulpahate
        C:-Sulphuric acid
        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 ?
        B:-Ignition coil
        D:-C.B points
        Correct Answer:- Option-B

Question47:-Firing order of a four cylinder Inline engine is _________
        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
        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.
        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 ?
        C:-Alumina foil
        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 ___________
        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
        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
        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.
        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 __________
        C:-Helper spring
        D:-Stabilizer bar
        Correct Answer:- Option-A

Question72:-In the following, which component comes under "Unsprung weight" ?
        B:-Transmission system
        C:-Steering Knuckle
        Correct Answer:- Option-C

Question73:-The energy stored per unit volume is almost ________ in the case of coil spring than the leaf spring
        D:-One fourth
        Correct Answer:- Option-B

Question74:-Tilt of the car wheel from vertical is ____________
        C:-King pin inclination
        Correct Answer:- Option-B

Question75:-If the castor angle of both side wheels are not equal, vehicle move _________
        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

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