Why EV powertrains depend on power electronics - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the main role of power electronics in EV powertrains.

Power Electronics

power_electronics_role = "[1]"

Drag options to blanks, or click blank then click option'

Astore mechanical energy

Bconvert and control electrical energy

Cgenerate fuel

Dcool the engine

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing power electronics with energy storage or cooling systems.

Power electronics in EVs convert and control electrical energy to drive the motor efficiently.

2fill in blank

medium

Complete the code to explain why power electronics are essential for motor speed control.

Power Electronics

motor_speed_control = "Power electronics adjust the [1] supplied to the motor."

Drag options to blanks, or click blank then click option'

Aelectrical power

Bmechanical torque

Cfuel flow

Dcoolant temperature

Attempts:

3 left

💡 Hint

Common Mistakes

Thinking power electronics control mechanical or fuel inputs directly.

Power electronics adjust the electrical power supplied to the motor to control its speed.

3fill in blank

hard

Fix the error in the statement about power electronics in EVs.

Power Electronics

Power electronics in EVs [1] mechanical energy directly to power the wheels.

Drag options to blanks, or click blank then click option'

Astore

Bgenerate

Cconvert

Dtransmit

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing mechanical and electrical energy roles.

Power electronics convert electrical energy, not mechanical energy, to power the wheels.

4fill in blank

hard

Fill both blanks to describe how power electronics help in energy efficiency and regeneration.

Power Electronics

Power electronics [1] energy flow to optimize efficiency and [2] energy during braking.

Drag options to blanks, or click blank then click option'

Acontrol

Bstore

Crecover

Dgenerate

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up storing and recovering energy.

Power electronics control energy flow for efficiency and recover energy during braking (regenerative braking).

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension describing power electronics functions.

Power Electronics

functions = [1]: [2] for [3] in ['convert', 'control', 'protect']

Drag options to blanks, or click blank then click option'

A{func}

Bfunc

D[func]

Attempts:

3 left

💡 Hint

Common Mistakes

Using list brackets instead of curly braces for dictionary keys.

This dictionary comprehension creates keys and values from the list of functions power electronics perform.