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Indian Institute of Solar Energy > Question bank > PG Diploma EV Semester One Paper 2 Exam Section A

PG Diploma EV Semester One Paper 2 Exam Section A

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PG Diploma EV– Semester 1 Paper 2

Question Bank – Section A

100 MCQs with Answers

  1. Full form of EV is:
    a) Engine Vehicle
    b) Electric Vehicle
    c) Energy Van
    d) Electronic Van
    Answer: b
  2. EV uses which prime mover?
    a) Petrol engine
    b) Diesel engine
    c) Electric motor
    d) Steam engine
    Answer: c
  3. Which battery is common in EVs?
    a) Dry cell
    b) Lithium-ion
    c) Zinc carbon
    d) Mercury
    Answer: b
  4. BEV stands for:
    a) Battery Electric Vehicle
    b) Basic Engine Vehicle
    c) Battery Engine Van
    d) Brake Electric Vehicle
    Answer: a
  5. HEV stands for:
    a) Hybrid Electric Vehicle
    b) High Engine Vehicle
    c) Heavy Electric Van
    d) Hybrid Engine Van
    Answer: a
  6. PHEV means:
    a) Plug-in Hybrid Electric Vehicle
    b) Power Hybrid EV
    c) Petrol Hybrid EV
    d) Plug Hybrid Engine Vehicle
    Answer: a
  7. FCEV uses:
    a) Coal
    b) Fuel Cell
    c) Flywheel
    d) Furnace
    Answer: b
  8. EV battery stores:
    a) Mechanical energy
    b) Thermal energy
    c) Electrical energy
    d) Wind energy
    Answer: c
  9. Device converting DC to AC is:
    a) Rectifier
    b) Converter
    c) Inverter
    d) Capacitor
    Answer: c
  10. Regenerative braking helps to:
    a) Waste energy
    b) Recover energy
    c) Increase drag
    d) Reduce battery size
    Answer: b
  11. SOC means:
    a) State of Charge
    b) Source of Cell
    c) Supply of Charge
    d) Speed of Charging
    Answer: a
  12. SOH means:
    a) State of Heat
    b) State of Health
    c) Source of Heat
    d) Safety of Hardware
    Answer: b
  13. BMS stands for:
    a) Battery Main Supply
    b) Battery Management System
    c) Brake Monitoring System
    d) Backup Motor Supply
    Answer: b
  14. EV tailpipe emission is generally:
    a) High
    b) Medium
    c) Zero
    d) Toxic
    Answer: c
  15. Level 1 charging uses:
    a) Home AC supply
    b) DC station
    c) Solar panel only
    d) Fuel pump
    Answer: a
  16. Level 3 charging is called:
    a) Slow charging
    b) Normal charging
    c) DC Fast Charging
    d) Trickle charging
    Answer: c
  17. Which motor is common in EV cars?
    a) PMSM
    b) Steam motor
    c) Hydraulic motor
    d) IC motor
    Answer: a
  18. BLDC stands for:
    a) Brushless DC Motor
    b) Battery Loaded DC
    c) Basic DC Motor
    d) Braked DC Motor
    Answer: a
  19. Battery pack consists of:
    a) Cells only
    b) Modules and cells
    c) Wheels only
    d) Charger only
    Answer: b
  20. EV charger converts AC to:
    a) AC
    b) DC
    c) Heat
    d) Sound
    Answer: b
  21. Drag coefficient affects:
    a) Horn sound
    b) Range
    c) Seat height
    d) Color
    Answer: b
  22. Higher aerodynamic drag causes:
    a) Better mileage
    b) Lower efficiency
    c) Zero losses
    d) Faster charging
    Answer: b
  23. EVs are quieter because they lack:
    a) Paint
    b) Gearbox
    c) Combustion engine noise
    d) Battery
    Answer: c
  24. DC-DC converter is used to:
    a) Increase tyre pressure
    b) Convert high DC to low DC
    c) Convert AC to AC
    d) Charge road lights
    Answer: b
  25. Main source of propulsion in EV is:
    a) Pedal
    b) Electric motor
    c) Fan
    d) Turbine
    Answer: b
  1. Which battery chemistry is widely used in EVs?
    a) Lead-carbon
    b) Lithium-ion
    c) Zinc-air
    d) Dry cell
    Answer: b
  2. NMC battery stands for:
    a) Nickel Manganese Cobalt
    b) New Metal Cell
    c) Nickel Motor Charge
    d) Normal Module Cell
    Answer: a
  3. LFP battery stands for:
    a) Lithium Ferro Phosphate
    b) Low Force Power
    c) Light Fuel Pack
    d) Lithium Fast Power
    Answer: a
  4. Battery thermal management is used to control:
    a) Color
    b) Temperature
    c) Weight
    d) Noise
    Answer: b
  5. Ideal Li-ion battery operating range is approximately:
    a) 15°C to 35°C
    b) 80°C to 100°C
    c) -50°C to -10°C
    d) 60°C to 90°C
    Answer: a
  6. Overcharging battery may cause:
    a) Better life
    b) Damage
    c) Lower voltage instantly
    d) Better cooling
    Answer: b
  7. Battery balancing is done by:
    a) Wheels
    b) BMS
    c) Headlight
    d) Steering
    Answer: b
  8. Cell connected in series increases:
    a) Capacity only
    b) Voltage
    c) Weight only
    d) Temperature
    Answer: b
  9. Cell connected in parallel increases:
    a) Voltage only
    b) Capacity
    c) Speed
    d) Noise
    Answer: b
  10. Unit of battery capacity is:
    a) Volt
    b) Ampere-hour
    c) Watt
    d) Ohm
    Answer: b
  11. 1 kWh equals:
    a) 100 Wh
    b) 1000 Wh
    c) 10 Wh
    d) 500 Wh
    Answer: b
  12. Battery enclosure should provide:
    a) Decoration
    b) Safety protection
    c) Music system
    d) Navigation only
    Answer: b
  13. Prismatic, cylindrical and pouch are types of:
    a) Motors
    b) Battery cells
    c) Tyres
    d) Chargers
    Answer: b
  14. Which is a high-speed charging option?
    a) Level 1
    b) Level 2
    c) DC Fast Charging
    d) Manual charging
    Answer: c
  15. Charging connector is used to:
    a) Cool battery
    b) Connect EV to charger
    c) Rotate wheel
    d) Lift vehicle
    Answer: b
  16. Which parameter shows remaining charge?
    a) SOH
    b) SOC
    c) RPM
    d) Cd
    Answer: b
  17. Which parameter shows battery aging?
    a) SOH
    b) SOC
    c) PWM
    d) AC
    Answer: a
  18. Fast charging mainly uses:
    a) DC supply
    b) Coal power
    c) Petrol line
    d) Air pressure
    Answer: a
  19. Battery recycling helps recover:
    a) Sand
    b) Lithium and metals
    c) Rubber only
    d) Plastic seats
    Answer: b
  20. Hydrometallurgy is related to:
    a) Painting
    b) Battery recycling
    c) Motor winding
    d) Wheel balancing
    Answer: b
  21. Power density refers to:
    a) Weight of battery
    b) Power per unit mass/volume
    c) Color density
    d) Wire thickness
    Answer: b
  22. Energy density means:
    a) Energy stored per unit mass/volume
    b) Energy wasted
    c) Heat output only
    d) Motor speed
    Answer: a
  23. Auxiliary battery in EV often powers:
    a) Vehicle accessories
    b) Main traction motor directly
    c) Road divider
    d) Suspension
    Answer: a
  24. EV battery pack usually placed low to improve:
    a) Noise
    b) Stability
    c) Paint life
    d) Antenna range
    Answer: b
  25. Thermal runaway is associated with:
    a) Tyre burst
    b) Battery overheating
    c) Door lock
    d) Seat belt
    Answer: b
  1. Powertrain in EV includes:
    a) Seats and doors
    b) Components delivering power to wheels
    c) Only tyres
    d) Only charger
    Answer: b
  2. Inverter controls motor by supplying:
    a) AC power from DC battery
    b) Water flow
    c) Fuel injection
    d) Air pressure
    Answer: a
  3. Controller in EV is used for:
    a) Music control
    b) Managing motor operation
    c) Paint control
    d) Mirror adjustment
    Answer: b
  4. PMSM stands for:
    a) Permanent Magnet Synchronous Motor
    b) Power Main Supply Motor
    c) Pulse Magnetic Speed Motor
    d) Permanent Mechanical System Motor
    Answer: a
  5. Induction motor rotor is generally:
    a) Battery type
    b) Squirrel cage type
    c) Hydraulic type
    d) Solar type
    Answer: b
  6. SRM stands for:
    a) Switched Reluctance Motor
    b) Solar Rotation Motor
    c) Speed Regulated Machine
    d) Static Relay Motor
    Answer: a
  7. BLDC motor has:
    a) Brushes
    b) No brushes
    c) Fuel pump
    d) Pistons
    Answer: b
  8. Torque is measured in:
    a) Volt
    b) Newton-meter
    c) Watt-hour
    d) Ampere
    Answer: b
  9. High starting torque is desirable for:
    a) Vehicle acceleration
    b) Paint finish
    c) Cabin light
    d) Radio signal
    Answer: a
  10. Motor efficiency map shows relation of:
    a) Price and color
    b) Speed, torque and efficiency
    c) Seat size and weight
    d) Road and weather
    Answer: b
  11. Cooling of motor helps to:
    a) Increase overheating
    b) Maintain performance
    c) Damage winding
    d) Reduce insulation only
    Answer: b
  12. Common EV motor cooling method:
    a) Sand cooling
    b) Air or liquid cooling
    c) Smoke cooling
    d) Vacuum cooling
    Answer: b
  13. Higher motor efficiency results in:
    a) Lower range
    b) Better range
    c) More noise only
    d) No effect
    Answer: b
  14. Traction motor means:
    a) Decorative motor
    b) Motor driving vehicle wheels
    c) Door motor
    d) Fan motor
    Answer: b
  15. Reduction gear is used to:
    a) Reduce music volume
    b) Match motor speed to wheels
    c) Charge battery
    d) Improve paint finish
    Answer: b
  16. Power electronics mainly handles:
    a) Woodwork
    b) Electrical power conversion/control
    c) Upholstery
    d) Tyre pressure
    Answer: b
  17. Buck converter generally:
    a) Steps up voltage
    b) Steps down voltage
    c) Produces fuel
    d) Increases noise
    Answer: b
  18. Boost converter generally:
    a) Steps down voltage
    b) Steps up voltage
    c) Stops charging
    d) Rotates tyres
    Answer: b
  19. Rectifier converts:
    a) DC to AC
    b) AC to DC
    c) Heat to light
    d) Motion to sound
    Answer: b
  20. PWM is commonly used for:
    a) Motor speed control
    b) Seat movement
    c) Window cleaning
    d) GPS tracking only
    Answer: a
  21. Higher battery voltage can help reduce:
    a) Current for same power
    b) Tire size
    c) Wheelbase
    d) Temperature always
    Answer: a
  22. 800 V EV systems are mainly used in:
    a) Low-end toys
    b) Advanced/high-performance EVs
    c) Bicycles only
    d) Petrol scooters
    Answer: b
  23. On-board charger is installed:
    a) On road divider
    b) Inside vehicle
    c) In helmet
    d) On tyre rim
    Answer: b
  24. Off-board charger usually means:
    a) External charging station equipment
    b) Seat charger
    c) Headlamp charger
    d) Battery sticker
    Answer: a
  25. OBD in vehicles refers to:
    a) On-Board Diagnostics
    b) Off Battery Drive
    c) Over Brake Device
    d) Output Battery Design
    Answer: a
  1. OBD system helps in:
    a) Diagnosing faults
    b) Washing vehicle
    c) Painting body
    d) Inflating tyres
    Answer: a
  2. ECU stands for:
    a) Engine Control Unit / Electronic Control Unit
    b) Energy Charging Unit
    c) Electric Cable Unit
    d) External Cooling Unit
    Answer: a
  3. Sensors in EV are used to measure:
    a) Only color
    b) Parameters like speed, temperature, voltage
    c) Only seat height
    d) Only music level
    Answer: b
  4. Aerodynamic drag mainly increases with:
    a) Lower speed
    b) Vehicle speed
    c) Battery age only
    d) Paint thickness
    Answer: b
  5. Lower drag coefficient means:
    a) Better efficiency
    b) Poor stability always
    c) Zero charging time
    d) No braking
    Answer: a
  6. Homologation means:
    a) Vehicle approval/testing certification
    b) Motor cooling
    c) Battery washing
    d) Insurance claim
    Answer: a
  7. EV testing checks:
    a) Safety and performance
    b) Only horn sound
    c) Only color quality
    d) Only seat foam
    Answer: a
  8. Fast chargers are commonly installed at:
    a) Highways/public stations
    b) Water tanks
    c) Gardens only
    d) Roof tops only
    Answer: a
  9. Wireless charging transfers energy using:
    a) Mechanical chain
    b) Inductive coupling
    c) Fuel pipe
    d) Belt drive
    Answer: b
  10. Interoperability in charging means:
    a) Different chargers work with many EVs
    b) Charger changes color
    c) Motor becomes smaller
    d) Battery becomes lighter
    Answer: a
  11. FAME policy in India is related to:
    a) EV promotion incentives
    b) Film industry
    c) Agriculture pump
    d) Railway seats
    Answer: a
  12. TCO in EV economics stands for:
    a) Total Cost of Ownership
    b) Total Charging Output
    c) Thermal Control Option
    d) Torque Current Output
    Answer: a
  13. EV ecosystem includes:
    a) OEMs, charging, suppliers, users
    b) Only drivers
    c) Only roads
    d) Only batteries
    Answer: a
  14. Battery swapping model is useful for:
    a) Faster turnaround
    b) More paint life
    c) Lower tyre wear only
    d) Louder horn
    Answer: a
  15. Smart grid enables:
    a) One-way power only
    b) Intelligent two-way energy management
    c) No electricity flow
    d) Only thermal power
    Answer: b
  16. V2G means:
    a) Vehicle to Grid
    b) Voltage to Ground
    c) Van to Garage
    d) Vehicle to Gear
    Answer: a
  17. Sustainable transport aims to reduce:
    a) Emissions
    b) Learning
    c) Safety
    d) Connectivity
    Answer: a
  18. Future EV trend includes:
    a) Autonomous mobility
    b) Steam engines
    c) Coal charging
    d) Manual ignition only
    Answer: a
  19. Range anxiety means concern about:
    a) Vehicle color fading
    b) Insufficient driving range
    c) Seat comfort
    d) Music volume
    Answer: b
  20. Battery recycling reduces need for:
    a) Raw material mining
    b) Charging cable
    c) Headlights
    d) Road tax
    Answer: a
  21. High torque at low speed is beneficial for:
    a) Vehicle launch
    b) Mirror folding
    c) Antenna signal
    d) Paint finish
    Answer: a
  22. EV maintenance is generally lower because of:
    a) Fewer moving parts
    b) More pistons
    c) More fuel filters
    d) Larger exhaust
    Answer: a
  23. Main advantage of regenerative braking is:
    a) Energy recovery
    b) Extra smoke
    c) Fuel leakage
    d) Gear damage
    Answer: a
  24. Public charging infrastructure growth helps:
    a) EV adoption
    b) Tyre puncture
    c) Noise pollution
    d) Fuel imports increase
    Answer: a
  25. Main objective of EV adoption is:
    a) Cleaner and efficient mobility
    b) More exhaust gases
    c) More engine oil use
    d) Slower transport
    Answer: a

PG Diploma EV– Semester 1 Paper 2

100 Short Answer Questions with Answers

  1. What is an Electric Vehicle?
    Answer: A vehicle powered fully or partially by electricity using an electric motor.
  2. Define BEV.
    Answer: Battery Electric Vehicle operates only on battery power without an IC engine.
  3. Define HEV.
    Answer: Hybrid Electric Vehicle uses both an IC engine and electric motor.
  4. Define PHEV.
    Answer: Plug-in Hybrid Electric Vehicle can be externally charged and uses engine plus battery.
  5. What is FCEV?
    Answer: Fuel Cell Electric Vehicle uses hydrogen fuel cell to generate electricity.
  6. State two advantages of EVs.
    Answer: Low emissions and low running cost.
  7. What is regenerative braking?
    Answer: A system that converts braking energy into electrical energy and stores it in battery.
  8. What is traction motor?
    Answer: The electric motor used to drive the vehicle wheels.
  9. What is inverter in EV?
    Answer: A device that converts DC battery power into AC power for the motor.
  10. What is charger in EV?
    Answer: Equipment used to charge the battery from external power supply.
  11. What is BMS?
    Answer: Battery Management System monitors and protects battery pack.
  12. What is SOC?
    Answer: State of Charge indicates remaining battery charge percentage.
  13. What is SOH?
    Answer: State of Health indicates battery condition compared with new battery.
  14. Name two common EV battery chemistries.
    Answer: Lithium-ion and LFP.
  15. What is battery module?
    Answer: A group of cells connected together as a unit.
  16. What is battery pack?
    Answer: Assembly of battery modules with casing, BMS and connections.
  17. What is Level 1 charging?
    Answer: Slow charging using domestic AC outlet.
  18. What is Level 2 charging?
    Answer: Faster AC charging using dedicated charger.
  19. What is Level 3 charging?
    Answer: DC fast charging for rapid battery charging.
  20. What is DC-DC converter?
    Answer: Device that converts one DC voltage level to another.
  21. What is EV powertrain?
    Answer: System that converts battery energy into wheel motion.
  22. Name two motors used in EVs.
    Answer: BLDC motor and PMSM motor.
  23. What is aerodynamic drag?
    Answer: Air resistance acting against moving vehicle.
  24. What is zero tailpipe emission?
    Answer: No exhaust gas emission from the vehicle tailpipe.
  25. Why are EVs quieter than ICE vehicles?
    Answer: Because they do not use combustion engines.
  1. What is BLDC motor?
    Answer: Brushless DC motor that operates electronically without brushes.
  2. What is PMSM motor?
    Answer: Permanent Magnet Synchronous Motor used for high efficiency EV drive systems.
  3. What is induction motor?
    Answer: AC motor where rotor current is induced electromagnetically.
  4. What is torque?
    Answer: Rotational force produced by a motor, measured in N·m.
  5. Why is high torque important in EVs?
    Answer: It gives quick acceleration and better starting performance.
  6. What is motor controller?
    Answer: Electronic unit that regulates motor speed, torque and direction.
  7. What is PWM control?
    Answer: Pulse Width Modulation used to control voltage and motor speed.
  8. What is battery balancing?
    Answer: Equalizing cell voltages in a battery pack.
  9. Why is battery balancing required?
    Answer: To improve battery life, safety and performance.
  10. What is thermal runaway?
    Answer: Uncontrolled rise in battery temperature causing failure or fire risk.
  11. What is battery thermal management system?
    Answer: System used to control battery temperature within safe limits.
  12. Name two battery cooling methods.
    Answer: Air cooling and liquid cooling.
  13. What is charging connector?
    Answer: Interface used to connect EV to charging equipment.
  14. What is fast charging?
    Answer: Charging method that replenishes battery quickly using high power.
  15. What is wireless charging in EV?
    Answer: Charging battery without cable using inductive power transfer.
  16. What is range anxiety?
    Answer: Fear that EV battery charge may not be enough to reach destination.
  17. What is vehicle range?
    Answer: Distance an EV can travel on one full charge.
  18. What is battery capacity?
    Answer: Amount of charge/energy battery can store.
  19. What is energy density?
    Answer: Energy stored per unit mass or volume of battery.
  20. What is power density?
    Answer: Power delivered per unit mass or volume.
  21. What is on-board charger?
    Answer: Charger installed inside vehicle converting AC supply to DC for battery charging.
  22. What is off-board charger?
    Answer: External charger usually used in fast charging stations.
  23. What is EV efficiency?
    Answer: Measure of distance traveled per unit energy consumed.
  24. What is kWh?
    Answer: Kilowatt-hour, unit of electrical energy.
  25. Why is low center of gravity useful in EVs?
    Answer: It improves stability and handling.

 

  1. What is OBD?
    Answer: On-Board Diagnostics system used to detect and report vehicle faults.
  2. What is ECU?
    Answer: Electronic Control Unit that manages vehicle subsystems electronically.
  3. What is a sensor in EV?
    Answer: Device that measures parameters like temperature, speed, voltage or current.
  4. Why are sensors important in EVs?
    Answer: They provide data for safe and efficient control.
  5. What is homologation?
    Answer: Official testing and certification approval for vehicle compliance.
  6. Why is EV testing necessary?
    Answer: To ensure safety, reliability, performance and regulatory compliance.
  7. What is insulation monitoring in EVs?
    Answer: Checking electrical isolation to prevent shock hazards.
  8. What is crash safety in EVs?
    Answer: Protection of passengers and battery during collisions.
  9. What is FAME in India?
    Answer: Government incentive scheme promoting electric mobility.
  10. What is TCO in EV sector?
    Answer: Total Cost of Ownership including purchase and operating costs.
  11. What is battery swapping?
    Answer: Replacing discharged battery with charged battery quickly.
  12. Where is battery swapping useful?
    Answer: Two-wheelers, three-wheelers and fleet vehicles.
  13. What is EV ecosystem?
    Answer: Network of manufacturers, suppliers, chargers, users and service providers.
  14. What is public charging station?
    Answer: Charging facility accessible to EV users in public locations.
  15. Name two charging station locations.
    Answer: Highways and shopping centers.
  16. What is interoperability in charging?
    Answer: Ability of different EVs and chargers to work together.
  17. What is smart grid?
    Answer: Advanced electricity network with digital monitoring and control.
  18. What is V2G?
    Answer: Vehicle-to-Grid system where EV can supply power back to grid.
  19. Why is V2G useful?
    Answer: It supports grid stability and energy management.
  20. What is sustainable transport?
    Answer: Transport system with low environmental impact and efficient resource use.
  21. What is carbon emission reduction?
    Answer: Lower release of CO₂ into atmosphere.
  22. What is charging time?
    Answer: Time required to recharge battery to desired level.
  23. What factors affect charging time?
    Answer: Charger power, battery size, SOC and temperature.
  24. What is drivetrain efficiency?
    Answer: Efficiency of converting battery energy to wheel motion.
  25. Why do EVs need software updates?
    Answer: To improve features, performance and system reliability.

 

  1. What is aerodynamics in EV design?
    Answer: Designing vehicle shape to reduce air resistance and improve efficiency.
  2. What is drag coefficient?
    Answer: Numerical value indicating aerodynamic resistance of a vehicle.
  3. Why is low drag coefficient important?
    Answer: It increases range and reduces energy consumption.
  4. What is rolling resistance?
    Answer: Resistance offered by tyres while rolling on road.
  5. How can rolling resistance be reduced?
    Answer: By using low-resistance tyres and correct tyre pressure.
  6. What is wheel alignment?
    Answer: Proper positioning of wheels for stable and efficient movement.
  7. What is payload in EV?
    Answer: Maximum load vehicle can carry excluding its own weight.
  8. What is curb weight?
    Answer: Weight of vehicle with standard equipment and fluids, without passengers.
  9. Why is lightweight design important in EVs?
    Answer: It improves efficiency and increases driving range.
  10. What is power electronics?
    Answer: Technology used to control and convert electrical power.
  11. What is buck converter?
    Answer: DC converter that reduces voltage level.
  12. What is boost converter?
    Answer: DC converter that increases voltage level.
  13. What is rectifier?
    Answer: Device that converts AC into DC.
  14. What is fuse used for in EVs?
    Answer: To protect circuits from overcurrent.
  15. What is contactor in battery pack?
    Answer: Electrically controlled switch used for high-voltage connection/disconnection.
  16. What is isolation in EV battery system?
    Answer: Separation of high-voltage system from chassis and low-voltage circuits.
  17. What is charging protocol?
    Answer: Communication standard between charger and vehicle.
  18. What is CAN communication?
    Answer: Controller Area Network used for communication between vehicle modules.
  19. What is preventive maintenance in EVs?
    Answer: Planned inspection/service to avoid breakdowns.
  20. What is predictive maintenance?
    Answer: Maintenance based on monitoring data and condition analysis.
  21. What is battery degradation?
    Answer: Reduction in battery capacity and performance over time.
  22. What is second-life battery use?
    Answer: Reusing EV batteries for stationary energy storage after vehicle use.
  23. What is recycling of EV battery?
    Answer: Recovering valuable materials from used batteries.
  24. What is future trend in EV mobility?
    Answer: Autonomous driving, smart charging and connected transport.
  25. Why are EVs important for future transport?
    Answer: They reduce pollution, improve efficiency and lower fossil fuel dependence.