EVT Battery Technology & Energy Storage

Question 1

What is the primary function of a battery in an electric vehicle?

Accepted Answer

To store and supply electrical energy to the motor

Answer

To start the combustion engine.

Answer

To lubricate the motor.

Answer

To cool the vehicle's cabin.

Question 2

Which type of battery is most commonly used in electric vehicles?

Accepted Answer

Lithium-ion battery

Answer

Lead-acid battery

Answer

Nickel-cadmium battery

Answer

Alkaline battery

Question 3

Why is battery management important in electric vehicles?

Accepted Answer

To monitor and maintain battery performance and safety

Answer

To increase fuel consumption.

Answer

To reduce the weight of the vehicle.

Answer

To enhance tire traction.

Question 4

What does energy density refer to in batteries?

Accepted Answer

The energy storage capacity relative to size or weight

Answer

The weight of the battery only.

Answer

The physical size of the battery.

Answer

The battery's cooling rate.

Question 5

What is the purpose of thermal management in battery systems?

Accepted Answer

To extend the battery life and ensure safe operation

Answer

To heat the passenger cabin.

Answer

To charge the battery faster.

Answer

To power the air conditioning.

Question 6

Which component regulates power flow from the battery to the motor?

Accepted Answer

Power inverter

Answer

Transmission

Answer

Compressor

Answer

Cooling fan

Question 7

What does a Battery Management System (BMS) monitor?

Accepted Answer

Battery cell voltage, current, and temperature

Answer

Vehicle speed only.

Answer

Windshield wiper speed.

Answer

Exhaust emissions.

Question 8

How does regenerative braking affect energy storage?

Accepted Answer

It stores energy back into the battery

Answer

It wastes energy as heat.

Answer

It increases fuel usage.

Answer

It reduces battery life.

Question 9

Why is cell balancing important in battery packs?

Accepted Answer

To ensure uniform charging and discharging of cells

Answer

To overcharge strong cells.

Answer

To cool the battery faster.

Answer

To disable weaker cells.