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Quizzes > Quizzes for Business > Technology

Take the Electric Vehicle Knowledge Assessment

Test Your EV Knowledge and Key Concepts

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art display for a quiz on Electric Vehicle Knowledge Assessment

This Electric Vehicle Knowledge Assessment helps you check what you know about EV basics - batteries, charging, and performance - in 15 quick multiple-choice questions. Use it to spot gaps before a class or to practice at your own pace. When you finish, try the companion EV quiz or the EV trivia quiz.

Which of the following is the primary energy storage component in an electric vehicle?
Inverter
Electric motor
Charge port
Battery pack
The battery pack stores electrical energy that powers the vehicle. Motors and inverters use that stored energy but do not store energy themselves.
What is the main function of an inverter in an EV?
Monitor tire pressure
Regulate coolant flow in the battery
Convert AC grid power to DC for charging
Convert DC battery power to AC for the motor
An inverter transforms the battery's DC output into AC current required by most EV motors. It does not handle cooling or tire pressure.
Which part of an EV directly converts electrical energy into mechanical energy?
Battery pack
Inverter
Onboard charger
Electric motor
The electric motor uses electrical energy to produce rotational force, driving the wheels. The inverter and charger manage electrical flows but do not produce motion.
What does BMS stand for in an EV?
Battery Management System
Bridge Modulation System
Battery Main Switch
Brake Monitoring Service
Battery Management System (BMS) monitors battery health, state of charge, and safety. It does not refer to braking or switching mechanisms.
Which connector type is commonly used for AC charging in Europe?
Type 2
CHAdeMO
Tesla Supercharger
CCS Combo
Type 2 connectors are the European standard for AC charging. CHAdeMO and CCS are primarily DC fast-charging standards.
What is the primary mechanism that allows lithium-ion batteries to store and release energy in EVs?
Thermal expansion of the cell
Movement of lithium ions between electrodes
Flow of electrons through an external circuit
Magnetic induction inside the electrodes
Lithium ions shuttle between the anode and cathode during charge and discharge. Electron flow outside the cell balances that movement but is not the storage mechanism.
What does SOC mean in EV battery technology?
System Onboard Control
State of Charge
Speed over Capacity
State of Current
State of Charge indicates the remaining charge in a battery as a percentage of its capacity. It does not refer to control systems or speed metrics.
Which factor most directly affects EV battery degradation?
Frequent regenerative braking
Use of headlights
Low tire pressure
High operating temperature
Elevated temperatures accelerate side reactions and degrade cell chemistry over time. Tire pressure and lighting have negligible direct impact on battery chemistry.
Which DC fast-charging standard uses a two-pin DC connector combined with AC pins?
CCS
Type 2
CHAdeMO
Tesla Supercharger
Combined Charging System (CCS) integrates two DC pins beneath the standard AC Type 2 connector for fast charging. CHAdeMO uses a separate dedicated plug.
Regenerative braking in EVs recovers which form of energy?
Chemical energy
Potential energy
Kinetic energy
Thermal energy
Regenerative braking converts the vehicle's kinetic energy back into electrical energy for storage. It does not harness potential or chemical energy directly.
What does a well-to-wheel analysis assess?
Total energy and emissions from fuel production through vehicle operation
Only tailpipe emissions
Only battery manufacturing emissions
Only energy used in the vehicle drivetrain
Well-to-wheel includes fuel extraction, production, distribution, and vehicle operation emissions. Tailpipe-only is a tank-to-wheel analysis.
What cooling method is most commonly used for EV battery packs?
Liquid cooling with glycol-based coolant
Passive conduction only
Immersion in water
Air cooling
Most EVs use liquid cooling with a glycol-based coolant to maintain optimal battery temperature. Air cooling is less efficient for high-power applications.
Which unit measures the electric torque output of an EV motor?
Ampere
Newton-meter
Volt
Watt
Torque is measured in newton-meters (Nm). Watts measure power, volts measure potential difference, and amperes measure current.
What does DoD (Depth of Discharge) indicate in EV batteries?
Time remaining to full charge
Portion of battery capacity that has been used
Maximum current output
Remaining battery life in years
Depth of Discharge is the percentage of the battery's capacity that has been consumed. It is the inverse of State of Charge.
Which factor most influences charging efficiency at fast-charging stations?
Tire wear
Battery temperature
Altitude
Vehicle color
Battery temperature strongly affects internal resistance and charging efficiency. Tire wear, color, and altitude have minimal direct impact on charging efficiency.
What charging protocol combines constant current and constant voltage phases to optimize lithium-ion battery life?
MPPT
PWM
BMC
CCCV
CCCV stands for constant current/constant voltage and is used to maximize charge acceptance while protecting battery health. PWM and MPPT relate to power electronics but not this specific charging cycle.
Why does regenerative braking efficiency often decrease at high state of charge levels?
Battery cannot accept additional charge above maximum SOC
Vehicle weight increases with SOC
Brake pads overheat
Motor cannot operate at high SOC
When SOC is near maximum, the battery's voltage limit prevents full capture of regenerated energy. Motor capability and vehicle weight are unaffected by SOC.
In vehicle-to-grid (V2G) systems, what capability does an EV provide?
Only charging from the grid
Bidirectional power flow between vehicle and grid
Generation of hydrogen fuel
Only charging other vehicles
V2G enables energy to flow both from the grid to the vehicle and back to the grid. It does not produce hydrogen or solely charge other vehicles.
If an EV has a 75 kWh battery and an average consumption of 15 kWh per 100 km, what is its approximate range?
400 km
375 km
750 km
500 km
Range is calculated as (75 kWh ÷ 15 kWh/100 km) Ã- 100 km = 500 km. Other values do not match this calculation.
Distinguish between calendar aging and cycle aging in EV batteries.
Calendar aging reduces capacity, cycle aging increases capacity
Calendar aging is degradation over time regardless of use, cycle aging is degradation due to charge/discharge cycles
Calendar aging is from charging cycles, cycle aging is from temperature exposure
Calendar aging occurs only at high SOC, cycle aging only at low SOC
Calendar aging refers to chemical degradation over time and temperature, while cycle aging is capacity loss from repeated charge/discharge cycles. The other options misstate these aging mechanisms.
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Learning Outcomes

  1. Identify key components and functions of electric vehicles
  2. Analyze the principles of EV battery technology
  3. Apply charging methods and best practices effectively
  4. Evaluate the environmental and economic impacts of EVs
  5. Master fundamental EV maintenance and safety protocols
  6. Demonstrate understanding of EV performance metrics

Cheat Sheet

  1. Key EV Components - Electric vehicles are built from a tech-savvy dream team: the electric motor, battery pack, inverter, and charging system all collaborate to move you smoothly down the road. Each part has a specific job, from storing energy to converting it into motion.
  2. Battery Types - Learn about the powerhouse behind every EV: batteries. From lithium-ion's energy density to nickel-metal hydride's durability and the promise of solid-state technology, each chemistry brings unique strengths and trade-offs.
  3. Energy Efficiency - EVs shine in efficiency, converting over 77% of grid electricity into wheel motion, compared to just 20 - 30% for combustion engines. This means more miles per kilowatt-hour and less wasted heat.
  4. Regenerative Braking - Hit the brakes and watch your EV recharge itself! Regenerative braking captures kinetic energy and feeds it back into the battery, boosting range and reducing wear on brake pads.
  5. Charging Methods - Whether you trickle-charge at home on Level 1, speed things up with Level 2, or power-boost at a DC fast charger, each option has its speed and setup requirements. Choose the right charger to match your lifestyle and range needs.
  6. Environmental Benefits - EVs cut greenhouse gas emissions and clear the air, especially when plugged into renewable energy sources. They help cities breathe easier and contribute to a greener planet.
  7. Economic Considerations - Though EVs often have higher sticker prices, lower fuel and maintenance costs can tip the scales in your favor over time. Dive into total cost of ownership to see the long-term savings.
  8. Maintenance Needs - EV upkeep focuses on battery health checks, software updates, and cooling system inspections rather than oil changes and spark plugs. Staying on top of these tasks ensures peak performance and longevity.
  9. Safety Protocols - High-voltage systems demand special precautions, from link-disconnect procedures to first responder guidelines. Understanding battery handling and emergency steps keeps everyone safe.
  10. Performance Metrics - Range, acceleration, and energy consumption are the holy trinity of EV performance, influenced by battery capacity, weight, and driving style. Learn how to compare specs and real-world results for your next ride.
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