Help with M&G question please! (1 Viewer)

[laviloki]

The question is:

An electric motor can be used to propel a vehicle. THe electric motor can be made to operate as a generator when the vehicle is moving. This will have a braking effect on the vehicle.

Explain the physics princples nvolved in the propelling and braking of this vehicle. (4 Marks)

Which dot point does it refer to, and how would I answer it?

Thanks

 

[Kaido]

Not sure about exact dot points.
But should prob mention:
- Induction of current (F-law) due to changing mag. flux + motor effect
- Back-emf (L-law) during propelling and braking
- Mention the speed of rotation vs back-emf

 

[laviloki]

Not sure about exact dot points.
But should prob mention:
- Induction of current (F-law) due to changing mag. flux + motor effect
- Back-emf (L-law) during propelling and braking
- Mention the speed of rotation vs back-emf

Thanks a lot