Sentence scrutiny

[nq:1]Is this sentence a student wrote correct? What transfer the power from the sources to the guide-ways are coils, which are a unique magnetic field system.[/nq]
No.
Not only is the sentence not correct, I don't think he has the technology correct either.

Hi and thanks,
Would you explain exactly why the sentence is not correct?

Thank you.
Howard

[nq:2]Is this sentence a student wrote correct? What transfer the ... guide-ways are coils, which are a unique magnetic field system.[/nq]
[nq:1]No. Not only is the sentence not correct, I don't think he has the technology correct either.[/nq]
Adding an 's' to transfer makes the sentence more grammatical.

Probably should be 'is' rather than 'are'.
As for the technology: consid

Thank you John. That's where I thought the problem in the sentence was, but
(1) isn't coils the real subject of "are," meaning that "are" is correct and
(2) doesn't "what" at the start of the sentence refer to the coils, making "transfer"
also correct?
I'm not sure, but couldn't the sentence be reworked as "Coils, which are a unique magnetic field system, are what transfer the powe

[nq:2]No. Not only is the sentence not correct, I don't think he has the technology correct either.[/nq]
[nq:1]Adding an 's' to transfer makes the sentence more grammatical. Probably should be 'is' rather than 'are'.[/nq]
Resulting in " What transfers the power from the sources to the guide-ways are coils, which is a unique magnetic field system."

I presume the Maglev system is wh

[nq:1]I'm not sure, but couldn't the sentence be reworked as "Coils, which are a unique magnetic field system, are what transfer the power from the sources to the guide-ways?[/nq]
As an English sentence, that's acceptable.
Technically it's nonsense.
Coils are found everywhere in electrical and electronic systems, and are therefor not unique. Nor in this case are they being used to tran

[nq:2]What transfer the power from the sources to the guide-ways are coils, which are a unique magnetic field system.[/nq]
[nq:1]Technically it's nonsense. Coils are found everywhere in electrical and electronic systems, and are therefor not unique. Nor in this ... Of course if this is just an exercise in the construction of a sentence, you may not care about that.[/nq]
These are not coils

[nq:2]Technically it's nonsense. Coils are found everywhere in electrical and ... construction of a sentence, you may not care about that.[/nq]
[nq:1]These are not coils that are unique, but the magnetic field system.[/nq]
Yes.
[nq:1]Make a tube of coils, and put a magnet inside. If several conditions are fulfilled, you may accelerate the magnet, and increase its kinetic energy. Thus t

Or "It is not the coils but the magnetic field system that is unique."

[nq:2]Make a tube of coils, and put a magnet inside. ... Thus transfer the energy from some source to the magnet.[/nq]
[nq:1]But a transfer of power is not what's unique. It's using this system to levitate an move a train that's unique.[/nq]
I only claim that the sentence is technically OK. The unique magnetic field system transfers energy from the sources indeed.
[nq:1]To summarize: C