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WorksheetsElectric vehicle Tech 2
Total questions: 13
Worksheet time: 14mins
Which type of EV uses hydrogen as fuel to generate electricity?
BEV
FCEV
PHEV
HEV
In a Plug-in Hybrid Electric Vehicle (PHEV), the battery can be charged using:
Only regenerative braking
Only internal combustion engine
An external power source
None of the above
What is the main characteristic of a mild hybrid vehicle?
Can run only on an electric motor
Combines a small electric motor with an ICE
Runs entirely on hydrogen fuel
Has no internal combustion engine
Full hybrid vehicles:
Cannot operate in electric-only mode
Use the electric motor to assist the ICE only
Can operate using only the electric motor, only the ICE, or a combination of both
Do not have a battery system
In a series hybrid system:
The electric motor drives the wheels, and the ICE is used to generate electricity.
The ICE directly drives the wheels with no use of an electric motor.
Both the ICE and the electric motor are used simultaneously to drive the wheels.
Only regenerative braking charges the battery.
What distinguishes a plug-in hybrid from a traditional hybrid vehicle?
Plug-in hybrids can operate only in electric mode for extended distances.
Traditional hybrids do not have an internal combustion engine.
Plug-in hybrids rely solely on regenerative braking to recharge the battery.
Traditional hybrids have larger batteries than plug-in hybrids.
Which hybrid configuration allows both the internal combustion engine and the electric motor to operate independently or simultaneously?W
Series hybrid
Parallel hybriid
Series - Parallel hybrid
What is the purpose of a DC-DC converter in an EV?
Converts the battery’s DC voltage to AC for the motor.
Steps down high voltage from the battery to power auxiliary systems.
Charges the battery during regenerative braking.
Manages the flow of coolant in the thermal system.
Why are permanent magnet synchronous motors (PMSMs) widely used in EVs?
They are cheaper to manufacture than induction motors.
They offer higher efficiency and torque density.
They do not require inverters for operation.
They are more efficient at low speeds only.
What is a key advantage of using liquid cooling in EV battery packs?
Enhances battery life by maintaining a stable temperature.
Eliminates the need for a thermal management system.
Increases battery charging time.
Regenerative braking in EVs:
Converts mechanical energy into electrical energy to recharge the battery.
Improves engine performance.
Increases fuel consumption.
Provides additional propulsion power.
The purpose of the inverter (MCU) in an EV is to:
Convert DC power from the battery to AC power for the electric motor.
Store energy in the battery pack.
Generate electricity from the ICE.
Manage vehicle cooling.
What are the different types of Electric Vehicles (EVs)?
