Font size
WorksheetsEVT QUIZ
Total questions: 128
Worksheet time: 1hrs 4mins
What is the primary need for using electric vehicles (EVs)?
To increase fuel consumption
To reduce air pollution and dependence on fossil fuels
To make vehicles heavier
To reduce vehicle cost only
Which of the following is a type of electric vehicle?
Internal Combustion Engine Vehicle
Steam Engine Vehicle
Hybrid Electric Vehicle (HEV)
Bio-fuel Vehicle
Compared to petrol/diesel vehicles, EVs generally have:
Higher tailpipe emissions
Lower cost and zero emissions
More complex engines
Higher noise levels
What happens to an EV at the end of its life?
It is burned completely
It is recycled or repurposed
It turns into a hybrid
It becomes a petrol vehicle
Which of the following is part of EV technology?
Gearbox
Carburetor
Electric Motor
Fuel Tank
Which layout is common in EVs?
Engine at the front and fuel tank at the rear
In-wheel motor layout
Rear engine with carburetor
Front-engine with gear clutch
What kind of cables are used in EV charging systems?
Audio cables
Coaxial cables
Charging cables (Type 1, Type 2, CCS)
LAN cables
Which of the following is a key component of an EV?
Radiator
Starter motor
Battery pack
Exhaust pipe
What is the role of controls in electric vehicles?
To control headlights
To manage power delivery from battery to motor
To cool the fuel
To refill fuel
What type of battery is most widely used in EVs today?
Lead-acid
Nickel-Cadmium
Lithium-ion
Alkaline
Which of these is NOT a type of EV battery?
Lithium-ion
Nickel Metal Hydride
Lead-acid
Gasoline
What does "battery plug-in" refer to?
Plugging battery to motor
Plugging charger into the battery for charging
Connecting fuel pipe
Refilling battery acid
Typical EV battery life ranges between:
6 months to 1 year
3 to 5 years
6 to 10 years
20 years
What is the main advantage of using an ultra-capacitor in EVs?
Provides fuel backup
Stores charge very slowly
Charges and discharges rapidly
Works without any electricity
Which of the following is a standard EV charging method?
Level 0
Level 1, Level 2, DC Fast Charging
Thermal charging
Mechanical charging
What does “DC fast charging” provide?
Slow charging using AC
Rapid charging using DC current
Manual charging
Wireless power only
Which is an alternate EV charging source?
Petrol
Diesel
Solar energy
Kerosene
Wireless charging uses which of the following principles?
Friction
Magnetic induction
Combustion
Optical reflection
Which component manages energy flow from the battery to the motor?
Radiator
Controller
Air filter
Crankshaft
What is the environmental benefit of using EVs?
Increased engine temperature
Reduced carbon emissions
High vibration levels
Loud engine sounds
Why is the cost of running an electric vehicle lower than that of a petrol vehicle?
Electric vehicles have fewer moving parts and lower maintenance costs, and electricity is cheaper than petrol or diesel.
Electric vehicles are heavier and therefore consume more energy, increasing efficiency.
Electric vehicles require premium fuels that reduce costs.
Electric vehicles pay higher road taxes which lowers running costs.
What are the two main types of EV layouts?
Central motor layout and in-wheel motor layout.
Front-engine rear-wheel-drive and mid-engine layouts.
Series–parallel hybrid and range-extender layouts.
Hydrogen fuel-cell and plug-in hybrid layouts.
How do electric vehicles contribute to reducing greenhouse gas emissions?
They produce zero tailpipe emissions and can use cleaner energy sources, reducing overall greenhouse gas emissions.
They produce more carbon dioxide than diesel vehicles.
They burn diesel more efficiently than petrol cars.
They use leaded petrol which lowers emissions.
What is the function of the Battery Management System (BMS) in an EV?
It monitors battery temperature, voltage, and current, ensuring safe charging, discharging, and overall battery protection.
It inflates the tires automatically.
It controls the windshield wipers.
It tunes the infotainment system.
What are the advantages of using solar panels for EV charging?
Solar charging is renewable, eco-friendly, reduces dependence on the electricity grid, and can lower long-term energy costs.
Solar charging increases vehicle noise levels.
Solar charging requires large amounts of fossil fuels to operate.
Solar charging is illegal in most countries.
What is the role of the inverter in electric vehicles?
It converts DC from the battery into AC to power the electric motor.
It stores energy in the battery cells.
It converts AC to DC for the battery.
It changes gear ratios mechanically.
What is the Combined Charging System (CCS) in EVs?
A universal fast-charging standard that combines AC and DC charging in one plug, enabling high-power charging.
A specific lithium-ion battery chemistry used in EVs.
A government tax rebate program for EVs.
A regenerative braking subsystem.
What is a typical end-of-life use of EV batteries?
They are reused in stationary energy storage systems or recycled to recover materials like lithium and cobalt.
They are sent directly to landfills without processing.
They are converted into gasoline for reuse.
They are repurposed as replacement oil filters.
Select the two safety features found in EV charging cables.
Temperature sensors to prevent overheating
Locking mechanisms to avoid accidental disconnection
Decorative LED lights for aesthetics
Fragile housings to reduce weight
How does an ultra-capacitor support EV acceleration?
It releases energy quickly, providing a sudden power boost during acceleration and reducing load on the main battery
It slowly charges the main battery over long trips
It converts AC to DC for onboard electronics
It stores energy long-term to improve range by itself
Which option correctly identifies types of EVs and a key environmental and economic benefit?
Battery Electric Vehicles (BEV), Hybrid Electric Vehicles (HEV), and Plug-in Hybrid Electric Vehicles (PHEV); lower tailpipe emissions and reduced fuel costs
Fuel Cell Vehicles (FCV) only; higher tailpipe emissions and increased fuel costs
Conventional ICE vehicles only; zero tailpipe emissions and reduced electricity costs
BEV and diesel hybrids only; increased maintenance costs and higher emissions
Which are key components of an electric vehicle involved in propulsion and control? Select all that apply.
Traction motor
Battery pack
Power inverter/controller
Sunroof
Which statement best summarizes EV batteries, their types, charging methods, and life considerations?
EV batteries are typically lithium‑ion variants; charging methods include Level 1, Level 2, and DC fast charging; lifespan is affected by temperature and depth of discharge
EV batteries are exclusively lead‑acid; charging is only possible with Level 1; lifespan is unaffected by usage patterns
EV batteries are disposable; DC fast charging is the only method; lifespan improves with frequent full discharges
EV batteries are nickel‑cadmium only; wireless charging is the primary method; lifespan is unrelated to heat
Which statement accurately characterizes ultra-capacitor charging, wireless charging, and solar charging in EV contexts?
Ultra-capacitors charge rapidly and deliver high power; wireless charging uses inductive coupling; solar charging uses photovoltaic panels to convert sunlight to electricity
Ultra-capacitors charge slowly; wireless charging requires a physical cable; solar charging relies on wind energy
Ultra-capacitors store large amounts of energy long-term; wireless charging depends on combustion; solar charging needs grid power
Ultra-capacitors cannot be recharged; wireless charging works only while driving at highway speeds; solar charging emits tailpipe gases
Which of the following motors is commonly used in electric vehicles due to high efficiency and torque?
DC Motor
Induction Motor
BLDC Motor
Universal Motor
What does BLDC stand for?
Binary Locked Direct Current
Brushless Direct Current
Bi-Level Direct Current
Basic Line Controller
In a DC motor, torque is produced due to interaction between:
Electric field and magnetic field
Magnetic field and mechanical power
Current and magnetic field
Heat and current
The rotor in an induction motor rotates due to:
Permanent magnets
External excitation
Magnetic induction from the stator
DC current supply
BLDC motors do not have:
Windings
Magnets
Brushes
Shaft
In BLDC motors, what replaces the mechanical commutator?
Gearbox
Slip rings
Electronic controller
Capacitor
In a Series Hybrid Electric Drive Train (HEDT), the coupling is:
Mechanical
Electrical
Hydraulic
Pneumatic
In a Parallel HEDT, the power from the engine and motor is combined using:
Electrical coupling
Magnetic coupling
Mechanical coupling
Chemical coupling
What does EDT stand for in electric vehicles?
Electronic Drive Transmission
Electric Drive Train
Energy Distribution Terminal
Engine Drive Test
Which of the following is a peak power source (PPS) in electric vehicles?
Engine
Battery pack
Supercapacitor
Gearbox
In torque coupling, the engine and motor contribute to:
Same power at different times
Different torque at different times
Combined torque to the wheels
Only motor torque
In speed coupling, the engine and motor:
Operate at same speed
Operate independently
Operate at different speeds but share load
Are mechanically locked
Which of the following is NOT a type of electric motor used in EVs?
DC Motor
Induction Motor
Synchronous Reluctance Motor
Steam Motor
What is the main advantage of Switched Reluctance Motor (SRM)?
High cost
Simple construction and ruggedness
What type of drive converter is used for SRM?
AC to DC
Inverter with asymmetric bridge converter
DC to AC motor starter
BLDC commutator
In SRM, torque is generated due to:
Magnetic attraction between stator and rotor poles
Heat and friction
Permanent magnets
DC brush action
The rotor of an SRM has:
Permanent magnets
Field windings
No windings or magnets
Carbon brushes
Which one of the following motors is easiest to manufacture?
BLDC
Induction Motor
SRM
DC Motor
Power rating design of EV motors depends on:
Colour of the motor
Vehicle weight and performance needs
Number of wheels
Air pressure in tyres
Which motor is best suited for high-speed EV applications?
DC Series Motor
BLDC Motor
Stepper Motor
Synchronous Generator
Why is power rating design important in EV motors?
It ensures the motor meets the required performance, efficiency, and thermal limits for the specific vehicle application.
It reduces vehicle weight regardless of performance needs.
It eliminates the need for any cooling system in the vehicle.
It allows only bidirectional energy flow control in the powertrain.
Which statement best describes the working principle and construction of DC motors used in electric vehicles?
Torque is produced by the interaction of armature current with the magnetic field, and a commutator with brushes provides mechanical commutation between armature windings.
Torque is produced solely by variable reluctance with stator-only excitation and no commutation is required.
Torque arises from induction in a squirrel-cage rotor with no need for a commutator or brushes.
The motor relies only on permanent magnets with no current in the armature and no commutation.
Which statements correctly characterize Series Hybrid Electric Drive Trains (HEDTs) and Parallel Hybrid Electric Drive Trains (HEDTs)?
In a series hybrid, the engine drives a generator and only the electric motor propels the wheels.
In a parallel hybrid, both the engine and the electric motor can provide torque to the wheels.
In a series hybrid, mechanical coupling from the engine to the wheels is mandatory.
In a parallel hybrid, the engine never connects mechanically to the wheels.
What best describes power rating design in EV motors and the concept of Peak Power Source (PPS) in improving EV performance?
Power rating design sets the motor’s continuous and peak power/torque to meet performance and thermal limits, while PPS provides short bursts of higher power for acceleration or hills without oversizing the motor.
Power rating design focuses only on minimizing motor mass, and PPS is a passive heat sink that reduces temperature rise.
Power rating design sets only the no-load speed, and PPS keeps the battery at constant voltage.
Power rating design determines gear ratios, and PPS is the primary traction power source during cruising.
Which statement best explains the working principle and key design considerations of Switched Reluctance Motor (SRM) drives used in electric vehicles?
SRMs produce torque by the rotor aligning to minimize reluctance when stator phases are sequentially energized; they commonly require rotor position sensing and use asymmetric half-bridge converters.
SRMs rely on induced rotor currents and slip like induction motors; no position sensing is needed and a single H-bridge is sufficient.
SRMs operate purely as permanent-magnet machines with sinusoidal back-EMF; vector control eliminates the need for power electronics.
SRMs require mechanical commutators and brushes for torque production and do not use electronic switching.
Which of the following is a unidirectional semiconductor device?
SCR
TRIAC
DIAC
UJT
A thyristor is also known as:
BJT
Triac
SCR
Zener
BJTs are classified as:
Voltage-controlled devices
Current-controlled devices
Light-controlled devices
Temperature-controlled devices
Which device combines the advantages of BJT and MOSFET?
Diode
Thyristor
IGBT
Triac
MOSFETs are mainly used for:
High-frequency switching
AC motors
Low-power lighting
Voltage regulation only
A power converter converts:
Heat into light
Voltage to current
One form of electrical power to another
Mechanical to electrical energy
An inverter converts:
AC to DC
DC to AC
Low voltage to high voltage
Frequency to voltage
What is one key safety precaution when working on EVs?
Use bare hands
Disconnect the 12V battery only
Wear insulated gloves and tools
Keep the ignition ON
Hazard management in EVs includes:
Increasing speed
Replacing sensors
Identifying, assessing, and controlling risks
Using only DC supply
What is the role of sensors in autonomous vehicles?
Increase vehicle weight
Detect surroundings and aid decision-making
Reduce battery life
Increase fuel consumption
LiDAR is commonly used in self-driving cars for:
Audio signals
Speed measurement
Surrounding object detection
Engine cooling
Hacking in autonomous cars poses a risk to:
Fuel economy
Paint quality
Vehicle control and data safety
Tyre pressure
What is the aim of sensorless control methods?
Remove electronic circuits
Control motors without physical position sensors
Increase wire length
Eliminate all controls
In Phase Flux Linkage-Based Method, what is estimated?
Rotor position
Battery state of charge
Cabin temperature
Tyre pressure
Which sensorless method uses changes in inductance to estimate rotor position?
GPS method
Modulated signal injection
Phase inductance-based method
LiDAR
In Modulated Signal Injection, what is injected into the motor?
Water
DC current
High-frequency signals
Compressed air
The Mutually Induced Voltage-Based Method relies on:
Permanent magnets
Mutual inductance effects
Mechanical gearboxes
Cooling fans
Observer-based sensorless control methods rely on:
Physical sensors
Mathematical estimators or models
Battery chemistry
Hydraulic control
One advantage of sensorless control in EVs is:
Increased hardware cost
Higher maintenance
Reduced reliability
Lower system complexity and cost
What is the main function of a diode in an electronic circuit?
To amplify signals in both directions
To allow current to flow in only one direction
To convert AC to DC without any losses
To store electrical energy like a capacitor
How does an IGBT differ from a MOSFET in power electronics?
An IGBT combines the high input impedance of a MOSFET with the high current capability and low saturation voltage of a BJT
An IGBT has lower input impedance than a MOSFET and operates only at low voltages
An IGBT is simply two MOSFETs in parallel with no change in characteristics
An IGBT is identical to a BJT but with a different package
Name two key precautions when working with high‑voltage systems in electric vehicles.
Use insulated tools and wear proper personal protective equipment (PPE) such as insulated gloves.
Work with bare hands to improve dexterity.
Disable protective equipment to avoid interference.
Ignore safety procedures to speed up work.
What is the primary role of an inverter in an electric vehicle?
Convert DC power from the battery into AC power required to drive the electric motor.
Convert AC from the grid into DC to charge the battery.
Regulate tire pressure.
Provide cabin climate control.
What kind of risks are involved in handling electric vehicles with high voltage?
Electric shock, burns, and potential fire hazards.
Dehydration and glare from headlights.
Only low-battery anxiety.
Tire wear and wheel misalignment.
Why are sensors critical in autonomous and self‑driving cars?
They detect and interpret the environment, enabling the vehicle to make informed decisions and navigate safely.
They increase engine horsepower.
They improve exterior aesthetics.
They reduce tire noise.
What is sensorless control in electric motors?
A method using multiple physical position and speed sensors.
A method of controlling motor operation without using physical position or speed sensors, often relying on electrical measurements.
Manual control using only the throttle pedal.
Remote control via Bluetooth.
Briefly describe the Phase Flux Linkage‑Based Method used in sensorless control.
It estimates rotor position by calculating flux linkage in the motor windings based on voltage and current measurements.
It measures rotor position using optical encoders.
It relies on GPS signals to determine rotor speed.
It injects coolant to reduce electrical noise.
How does the Modulated Signal Injection method help in sensorless control?
By injecting a high‑frequency signal into the motor windings, it helps detect rotor position based on the motor’s electrical response.
By installing additional mechanical sensors on the shaft.
By reducing battery temperature during operation.
By filtering out all high‑frequency components from the control signals.
What is the purpose of hazard management in electric vehicle safety?
To identify, assess, and mitigate potential risks to ensure the safety of users and maintenance personnel.
To increase vehicle top speed.
To minimize aesthetic damage to the bodywork.
To replace mechanical components more frequently.
Explain the construction and working principle of diodes (5). Which option best describes a standard power diode?
A two-terminal PN junction device that conducts under forward bias by reducing the depletion barrier and blocks current under reverse bias except for leakage, enabling rectification
A three-layer PNPN device that latches on when a gate current is applied and turns off only when current falls below a holding value
A unidirectional device whose current conduction increases with reverse voltage due to avalanche multiplication and is used only for voltage regulation
A two-terminal metal–oxide device that conducts equally in both directions when the threshold voltage is reached
Explain the construction and working principle of thyristors (5). Which option best describes a standard SCR?
A two-layer PN device that conducts only when forward biased and turns off immediately when bias is removed
A four-layer PNPN device with three junctions and a gate; once triggered, it latches into conduction until the anode current falls below the holding current
A bidirectional three-terminal device that conducts for either polarity when the breakover voltage is reached without any gate control
A MOS-gated unipolar device that can be turned off at any time by removing the gate drive
Explain the safety precautions, guidance, and hazard management practices necessary to ensure safe working conditions. Which practices should be implemented?
Lockout/tagout procedures and verification of de-energization before work
Use of appropriate personal protective equipment (PPE) and insulated tools
Bypassing interlocks to maintain operation during maintenance
Risk assessment, signage, and housekeeping to control electrical, mechanical, and chemical hazards
Working alone in hazardous areas to reduce personnel exposure
Write short notes on the following sensorless control methods: Phase Inductance Based method (5). Which statement best describes this method for rotor position estimation?
It estimates rotor position from variations in phase inductance with rotor saliency, injecting test pulses or using high-frequency signals to infer position even at low speed or standstill
It derives position from the zero-crossing of back-EMF in the unenergized phase and works only at sufficiently high speeds
It uses Hall-effect sensors mounted 120 electrical degrees apart to directly measure position
It estimates position from DC-link voltage ripple caused by inverter switching
Write short notes on the following sensorless control methods: Mutually Induced Voltage-Based method (5). Which statement best describes this method for rotor position estimation?
It uses the back electromotive force induced in the stator windings to infer rotor position, typically by detecting zero crossings or estimating EMF, and is effective primarily at medium to high speeds
It relies on measuring changes in phase inductance at standstill to determine rotor saliency
It requires mechanical encoders to measure shaft angle directly
It estimates position by monitoring temperature-dependent resistance changes in windings
Describe different types of inverters commonly used in EVs (5). Which inverter topologies are commonly applied in electric vehicles?
Two-level three-phase voltage-source inverter (VSI)
Three-level neutral-point-clamped (NPC) or other multilevel VSIs
Modular multilevel inverter (MMI) for high-voltage applications
Buck DC–DC converter used for 12 V auxiliaries
Uncontrolled single-phase diode rectifier
Multiple Choice Questions (MCQs): Which type of hybrid vehicle has a small electric motor that assists the engine but cannot power the vehicle alone?
Micro Hybrid
Mild Hybrid
Full Hybrid
Plug-in Hybrid
Multiple Choice Questions (MCQs): A Plug-in Hybrid Electric Vehicle (PHEV) can be charged by:
Regenerative braking only
External electrical power source
Gasoline engine only
None of the above
Multiple Choice Questions (MCQs): In a series hybrid layout, the vehicle’s wheels are driven by:
Internal combustion engine directly
Electric motor only
Both engine and motor together mechanically
Regenerative braking system
Multiple Choice Questions (MCQs): Which hybrid layout uses both engine and electric motor connected mechanically to drive the wheels?
Series
Parallel
Micro
Mild
Multiple Choice Questions (MCQs): What is the primary purpose of regenerative braking in hybrid vehicles?
To improve acceleration
To convert kinetic energy into electrical energy
To reduce engine noise
To increase vehicle weight
Which of the following is a major component in hybrid vehicle propulsion systems?
Fuel cell
Electric motor
Hydraulic pump
Turbocharger
Hybrid electric vehicles help reduce:
Fuel consumption
Engine lifespan
Battery life
Vehicle weight
Which type of hybrid vehicle can operate in all-electric mode for short distances?
Micro Hybrid
Mild Hybrid
Full Hybrid
Series Hybrid
What is a key advantage of Series-Parallel hybrid architecture?
Simplified design
Flexibility to operate as series or parallel hybrid
Uses only electric motor
No regenerative braking
Vibration and noise reduction in hybrid vehicles are mainly due to:
Larger engine size
Use of electric motor during low speeds
Mechanical coupling
Exhaust system design
Micro hybrid vehicles typically feature:
Electric propulsion only
Start-stop system and regenerative braking
Large electric motor assist
Plug-in charging capability
Which control system in HEVs manages power flow between engine, motor, and battery?
Battery Management System
Vehicle Control Unit
Hybrid Electric Vehicles are more economical because they:
Use only electric energy
Reduce fuel consumption through energy recovery and electric assist
Are lighter than conventional vehicles
Use cheaper fuels
The main energy storage device in most hybrid vehicles is:
Flywheel
Supercapacitor
Battery pack
Fuel tank
Which component helps reduce noise and vibration in hybrid electric vehicles?
Regenerative brake system
Electric motor operation at low speed
Larger tires
Manual transmission
Which of the following is NOT a classification of hybrid electric vehicles?
Micro Hybrid
Mild Hybrid
Full Hybrid
Solar Hybrid
The term ‘propulsion system’ in hybrid vehicles refers to:
Steering and suspension
System that provides vehicle motion using engine and/or electric motor
Air conditioning system
Fuel injection system
What is the main function of the electric motor in a mild hybrid vehicle?
Solely drive the vehicle
Assist the engine and recover energy during braking
Only start the engine
Provide air conditioning power
Which hybrid architecture allows the vehicle to run solely on the engine or motor independently?
Series
Parallel
Series-Parallel
Micro
The control strategy in HEVs aims to:
Maximize fuel consumption
Optimize power delivery and battery usage
Increase emissions
Disable electric motor frequently
What is a micro hybrid vehicle?
A vehicle that features a start-stop system and regenerative braking but cannot run on electric power alone
A vehicle that can operate using the electric motor only at highway speeds
A vehicle that requires external charging to operate
A vehicle that has no regenerative braking system
How does a mild hybrid differ from a full hybrid?
A mild hybrid cannot drive the vehicle on electric power alone, while a full hybrid can operate using the electric motor only
Both mild and full hybrids can drive on electric power only
A mild hybrid uses a larger electric motor than a full hybrid
A full hybrid cannot use the electric motor alone
What is the key feature of a plug-in hybrid electric vehicle (PHEV)?
It can be recharged from an external power source and can run longer on electric power alone compared to a full hybrid
It uses no battery at all
It cannot be plugged in for charging
It requires hydrogen fuel to operate
Name the three main hybrid vehicle architectures.
Series hybrid, parallel hybrid, and series-parallel hybrid
Micro hybrid, mild hybrid, and plug-in hybrid
Diesel-electric, hydrogen, and solar hybrids
Two-stroke, four-stroke, and rotary hybrids
In a series hybrid vehicle, which component directly drives the wheels?
Electric motor
Internal combustion engine
Transmission only
Battery alone
What is regenerative braking?
A process that recovers kinetic energy during braking and converts it into electrical energy to recharge the battery
A system that increases engine displacement for higher power
A technique for warming up the catalytic converter quickly
A method of mechanical braking using only friction pads
How does hybrid technology improve fuel economy?
By combining electric motor assist, regenerative braking, and optimizing engine operation
By increasing engine displacement
By disabling idle stop–start systems
By using only the internal combustion engine at all times
Why do hybrid vehicles generally produce less noise and vibration?
Because the electric motor can operate silently and often propels the vehicle at low speeds
Because exhaust mufflers are removed to reduce backpressure
Because heavier engines naturally damp vibrations
Because tires are made of solid rubber that absorbs noise
Which set lists the main components of a hybrid propulsion system?
Internal combustion engine, electric motor/generator, battery pack, power electronics, and transmission
Carburetor, alternator belt, radiator, and muffler
Solar panel array, hydrogen tank, and steam turbine
A single crankshaft with no electrical components
What is the purpose of hybrid vehicle control systems?
To manage power flow between the engine, electric motor, and battery to optimize performance and efficiency
To inflate tires automatically
To control satellite navigation and infotainment
To adjust seat positions and interior lighting
Classify and explain any two types of Hybrid Electric Vehicles (HEVs). Which pair correctly identifies HEV types?
Series and Parallel
Diesel‑electric and Steam‑electric
Turbine and Rocket
Manual and Automatic
Write short notes on the following hybrid vehicle architectures: Series and Series‑Parallel. Which statement best distinguishes these architectures?
In a series HEV, the engine drives a generator to power the motor and charge the battery; in a series‑parallel HEV, the engine can drive the wheels directly and/or through the motor‑generator
In a series HEV, the engine always drives the wheels directly; in a series‑parallel HEV, the engine is never connected to the wheels
Both architectures require no battery because the motor is powered only by the alternator
A series‑parallel HEV has no electric motor
Discuss the role of each component of a hybrid electric vehicle propulsion system. Which mapping of roles is correct?
Internal combustion engine provides mechanical power; electric motor/generator provides propulsion and regenerative braking; battery pack stores electrical energy; power electronics manage energy conversion and flow
Internal combustion engine stores energy; battery produces mechanical torque; motor controls cabin climate; transmission stores electricity
Transmission converts electricity to DC; battery controls navigation; power electronics store fuel
Electric motor is only for starting the engine; battery only powers headlights; power electronics are not used
Brief about the types and controls of hybrid electric vehicle systems. Which energy‑management control strategies are commonly used in HEVs?
Rule‑based control
Fuzzy‑logic control
Equivalent Consumption Minimization Strategy (ECMS)
Random seat‑position selection
