WorksheetsEngine Components and Functions Quiz
Total questions: 90
Worksheet time: 3hrs 0mins
Which of the following is called the "heart of the engine"?
Cylinder head
Piston
Cylinder block
Crankshaft
The function of the piston rings is to:
Absorb vibration
Seal the combustion chamber and control oil consumption
Connect piston to crankshaft
Cool the piston
Which component converts reciprocating motion into rotary motion?
Camshaft
Crankshaft
Piston
Connecting rod
The connecting rod connects the piston to the:
Camshaft
Cylinder head
Crankshaft
Flywheel
Which component stores rotational energy and reduces speed fluctuations in the engine?
Clutch
Flywheel
Crankshaft
Camshaft
The function of the camshaft is to:
Convert rotary motion into reciprocating motion
Open and close the valves at proper timing
Reduce engine vibrations
Support crankshaft
The top portion of the cylinder block is closed by:
Cylinder head
Crankcase
Oil sump
Piston
Which engine component carries lubricating oil at the bottom?
Oil pump
Crankcase
Oil sump
Timing cover
Which of the following is NOT an engine component?
Crankshaft
Alternator
Piston
Cylinder block
The function of the gasket placed between cylinder head and cylinder block is to:
Increase compression ratio
Provide a leak-proof seal
Reduce engine noise
Control piston movement
The main function of the cooling system in an IC engine is to:
Increase the engine weight
Keep the engine at optimum operating temperature
Reduce lubrication requirement
Increase fuel consumption
Which of the following is NOT a type of cooling system used in IC engines?
Air cooling
Water cooling
Lubrication cooling
Evaporative cooling
In an air-cooled engine, cooling is achieved by:
Circulating water around the cylinder
Using fins to increase heat dissipation
Oil circulation
Steam cooling
The device that maintains engine temperature by regulating coolant flow is:
Radiator
Thermostat valve
Water pump
Fan
Which component in a water-cooling system helps in dissipating heat from the coolant to the atmosphere?
Radiator
Thermostat
Water jacket
Fan belt
The water pump in an engine cooling system is usually driven by:
Battery
Crankshaft belt
Camshaft
Flywheel
The function of the radiator cap is to:
Allow coolant overflow at low temperature
Maintain pressure in the cooling system
Stop coolant circulation
Reduce engine vibration
Which cooling method is mostly used in heavy-duty vehicles?
Air cooling
Evaporative cooling
Water cooling
Oil cooling
What is the main disadvantage of air cooling in IC engines?
High maintenance cost
Uneven cooling and limited capacity
Requirement of radiator
Poor lubrication
The fan used in an engine cooling system helps to:
Increase coolant flow
Remove dirt from coolant
Provide additional air circulation to radiator
Pressurize the cooling system
The primary function of the lubrication system in an engine is to:
Increase fuel efficiency
Reduce friction and wear between moving parts
Cool the combustion chamber
Maintain cylinder pressure
Which of the following is NOT a function of lubricating oil?
Sealing the piston rings
Cooling engine parts
Cleaning engine components
Igniting the air-fuel mixture
The component that stores lubricating oil in the engine is called:
Oil pump
Crankcase
Oil sump
Filter
The device used to remove impurities and dust particles from lubricating oil is:
Oil pump
Oil filter
Oil cooler
Oil gauge
Which lubrication method is generally used in scooters and motorcycles (2-stroke engines)?
Pressure feed system
Mist lubrication system
Wet sump system
Dry sump system
In a pressure lubrication system, oil is supplied to engine parts by:
Splash of oil
Oil pump under pressure
Gravity
Air suction
Which of the following is a disadvantage of splash lubrication system?
Simple design
Uneven distribution of oil at high speed
Requires oil pump
Requires large oil sump
The dry sump lubrication system differs from the wet sump system in that:
Oil is stored in an external tank
No oil filter is required
Oil is not circulated
Oil is mixed with fuel
The main reason for adding additives to lubricating oil is to:
Increase oil density
Improve oil properties such as viscosity, detergency, and oxidation resistance
Reduce oil cost
Increase engine noise
Which of the following instruments indicates the lubricating oil pressure in an engine?
Tachometer
Pressure gauge
Oil dipstick
Thermometer
The main function of the fuel feed system in an IC engine is to:
Lubricate the piston and cylinder
Supply the required air-fuel mixture to the engine
Cool the engine parts
Increase exhaust emissions
Which fuel feed system is commonly used in petrol engines?
Carburetor system
Fuel injection system
Gravity feed system
Pressure feed system
In modern diesel engines, fuel is supplied to the cylinder by:
Carburetor
Injector
Gravity
Oil pump
Which component stores fuel in the fuel feed system?
Fuel injector
Fuel pump
Fuel tank
Carburetor
The function of the fuel pump is to:
Atomize fuel
Pump fuel from tank to carburetor/injector
Filter impurities in fuel
Control air-fuel ratio
Which of the following filters fuel before it reaches the carburetor or injector?
Fuel strainer
Air filter
Oil filter
Radiator
In petrol engines, atomization of fuel is done by the:
Fuel pump
Injector
Carburetor
Cylinder head
In diesel engines, fuel injection into the cylinder takes place at:
Constant pressure
High pressure
Low pressure
Atmospheric pressure
Which of the following is an advantage of fuel injection over carburetor system?
Lower cost
Better fuel economy and efficiency
Simple design
Easy maintenance
The main disadvantage of the gravity feed fuel system is:
Requires high-pressure fuel pump
Fuel supply depends on tank position (only above carburetor)
Very costly system
Cannot be used in small vehicles
The function of the transmission system in an automobile is to:
Supply fuel to the engine
Transmit power from engine to wheels with variable torque and speed
Increase engine cooling
Reduce engine noise
Which of the following is NOT a part of the power train?
Clutch
Gearbox
Differential
Carburetor
In a manual transmission system, gear shifting is performed by:
Torque converter
Synchronizer and selector mechanism
Clutch pedal only
Propeller shaft
The main function of the clutch in an automobile is to:
Engage and disengage power from engine to gearbox
Reduce engine vibrations
Change the gear ratio
Supply lubrication oil
Which transmission provides continuous variation of gear ratio without step changes?
Constant mesh gearbox
Epicyclic gearbox
Continuously Variable Transmission (CVT)
Sliding mesh gearbox
The universal joints are used in the propeller shaft to:
Increase torque
Accommodate angular movement between gearbox and differential
Reduce engine speed
Engage clutch smoothly
The component that transmits power at right angles and divides it between two wheels is:
Gearbox
Differential
Propeller shaft
Clutch
Which type of gearbox is commonly used in modern passenger cars with manual transmission?
Sliding mesh gearbox
Constant mesh gearbox
Synchromesh gearbox
Epicyclic gearbox
The torque converter is a part of which type of transmission system?
Manual transmission
Automatic transmission
Sliding mesh transmission
CVT
Which of the following statements about the differential is TRUE?
It prevents relative motion between wheels
It allows outer wheel to rotate faster than inner wheel while cornering
It increases engine power
It reduces gear ratio
The main function of the front axle in an automobile is to:
Transmit power to the wheels
Support the weight of the front part of the vehicle and facilitate steering
Absorb road shocks only
Provide braking force only
The front axle is usually made of:
Aluminium alloy
Mild steel
Nickel-steel or carbon steel forging
Cast iron
Which of the following is NOT a type of front axle?
Live axle
Dead axle
Stub axle
Tandem axle
The type of front axle used when the front wheels are NOT driven is called:
Live front axle
Dead front axle
Stub axle
Tandem axle
A live front axle is one that:
Does not carry any load
Only supports the weight of the vehicle
Transmits power to the front wheels in addition to carrying load
Supports steering column
The stub axle in a front axle is connected to the beam axle through:
Tie rod
Kingpin
Ball joint
Cotter pin
Which steering geometry condition is satisfied by the front axle arrangement with stub axles?
Davis steering condition
Ackermann steering condition
Parallel steering condition
Reverse steering condition
The dead front axle is also known as:
Live axle
Beam axle
Torque tube
Semi-floating axle
Which component of the front axle absorbs shocks due to road irregularities?
Tie rod
Axle beam
Suspension spring
Kingpin
In most passenger cars, the front axle is of the:
Split beam type with independent suspension
Solid beam type with dead axle
Tandem axle type
Torque tube type
The main function of the suspension system is to:
Increase engine power
Provide comfort by absorbing road shocks and maintain wheel contact
Increase fuel efficiency
Reduce braking distance
Which of the following is NOT a part of the suspension system?
Springs
Shock absorbers
Control arms
Carburetor
Leaf springs are generally used in:
Heavy commercial vehicles
Motorcycles
Sports cars
Racing cars
The function of a shock absorber in the suspension system is to:
Support vehicle load
Reduce vibration by damping spring oscillations
Increase vehicle speed
Provide steering control
Which type of suspension system allows each wheel to move independently?
Rigid axle suspension
Independent suspension
Leaf spring suspension
Torsion bar suspension
MacPherson strut suspension is a type of:
Rigid suspension
Leaf spring suspension
Independent suspension
Semi-elliptical suspension
Which of the following is an advantage of independent suspension?
More load carrying capacity
Better ride comfort and handling
Lower cost
Simpler construction
In a torsion bar suspension system, springing action is provided by:
Coiled springs
Twisting of a steel bar
Leaf springs
Rubber pads
Which suspension component keeps the wheels in proper alignment and guides their motion?
Springs
Shock absorbers
Control arms
Torsion bar
Air suspension uses which medium for springing action?
Compressed air
Hydraulic fluid
Rubber bushings
Torsional stress
The primary function of the braking system in an automobile is to:
Increase vehicle speed
Reduce vibration
Slow down or stop the vehicle safely
Improve fuel economy
Which type of brake is commonly used in bicycles and some motorbikes?
Disc brake
Drum brake
Band brake
Hydraulic brake
The disc brake system uses:
Brake shoes pressing against a drum
Brake pads pressing against a rotating disc
Bands tightening around the wheel
None of the above
Which of the following is NOT a type of braking system?
Mechanical braking system
Hydraulic braking system
Pneumatic braking system
Electrical fuel injection system
In hydraulic brakes, braking force is transmitted by:
Air pressure
Hydraulic fluid
Mechanical linkage
Electrical current
The function of a brake master cylinder is to:
Store brake oil
Convert driver's pedal force into hydraulic pressure
Reduce engine noise
Increase wheel speed
Which type of brake is commonly used in heavy vehicles like trucks and buses?
Mechanical brake
Hydraulic brake
Pneumatic (air) brake
Electromagnetic brake
The Anti-lock Braking System (ABS) is used to:
Increase braking distance
Prevent wheel lock during sudden braking
Reduce brake pedal force
Increase vehicle speed
Which of the following components is used to increase the braking force applied by the driver?
Brake liner
Brake booster (servo)
Wheel cylinder
Disc rotor
The parking brake (hand brake) usually acts on:
Front wheels only
Rear wheels only
All four wheels
Transmission system only
The main function of the battery in an automobile is to:
Supply mechanical power
Store and supply electrical energy for starting and accessories
Increase engine efficiency
Reduce fuel consumption
The alternator in an automobile is used to:
Start the engine
Generate electrical power and charge the battery
Regulate fuel supply
Control ignition timing
Which of the following converts electrical energy into mechanical energy to start the engine?
Alternator
Dynamo
Starter motor
Rectifier
The ignition coil is used in a petrol engine to:
Store electrical energy
Convert low voltage to high voltage for spark plugs
Regulate current flow to alternator
Charge the battery
Which component ensures that the alternator does not overcharge the battery?
Rectifier
Voltage regulator
Ignition coil
Starter relay
The device used to convert AC current generated in the alternator into DC is called:
Transformer
Rectifier
Regulator
Capacitor
Which of the following is NOT an electrical component of an automobile?
Spark plug
Alternator
Battery
Carburetor
The function of spark plugs in an SI engine is to:
Atomize the fuel
Ignite the air-fuel mixture by providing a spark
Supply high voltage to ignition coil
Filter fuel
Headlights, tail lamps, and indicators in automobiles generally operate on:
6 V DC supply
12 V DC supply
24 V AC supply
48 V DC supply
The fuse in an automobile electrical system is used to:
Reduce voltage fluctuations
Protect the circuit from overcurrent
Increase battery life
Convert AC to DC
