ac motors (1 Viewer)

[clever angel]

hi ppl, just wanted to know that for the dotpt" describe main features of an ac electric motor, do we need to know about the synchronous motors or just induction

 

[rama_v]

I would learn both particularly induction motor

 

[helper]

In reply to the queries raised in your email 2 November 2004 about the
physic syllabus clarifications..

1. Relating to the types of motors to be described.
9.3.5 The dot point in column 2 'describe the main features of an AC
electric motor' is linked to the investigation in dot point 1 in column 3
which states the motor is an AC induction motor.

Inspector Science
@boardofstudies.nsw.edu.au

 

[redd]

In reply to the queries raised in your email 2 November 2004 about the
physic syllabus clarifications..

1. Relating to the types of motors to be described.
9.3.5 The dot point in column 2 'describe the main features of an AC
electric motor' is linked to the investigation in dot point 1 in column 3
which states the motor is an AC induction motor.

Inspector Science
@boardofstudies.nsw.edu.au

So are you sure we don't need to know about the synchronous ??????????

 

[serge]

So are you sure we don't need to know about the synchronous ??????????

helper's never wrong

 

[helper]

I'm wrong at times.
All I know is what the BOS has told me officially and I still have the email. If a non-AC induction motor ever comes up, then they are going to have a lot of explaining to do.

The universal and synchronous AC motors are that hard to learn.

 

[redd]

I'm wrong at times.
All I know is what the BOS has told me officially and I still have the email. If a non-AC induction motor ever comes up, then they are going to have a lot of explaining to do.

The universal and synchronous AC motors are that hard to learn.

well i personally dont understand the synchro and universal motors, i only get the induction motor... so yeh =p

 

[biscuit]

i know the induction well, not the others...
I think its wise to know the others as well though, you never know, the dot point is very broad

 

[helper]

Its broad if you read it by yourself but isn't braod if you read it in the context of the syllabus.

 

[exa_boi87]

while we're on the topic, can someone just explain to me how the initial rotating magnetic field is established? ... Is the field structure electromagnets connects to an AC voltage or something? .. Only as I understand the whole induction process to begin with the stator generating a rotating magnetic field however cant work out how this stator rotates the field.

Or is it the prime mover that moves it :s ... ah. that would make more sense now wouldnt it ><

 

[helper]

Induction motors work with an AC power supply.

There are a number of ways of causing the changing magnetic field but it is through the use of AC that is the most important.

 

[exa_boi87]

Cheers for that .. was thinking of a generator ><