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malar
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Join Date: Dec 2010
Location: india
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DC Generator

12/04/2010 11:07 AM

an induced emf which is due to physical movement of the coil or conductor with respect to flux or movement of flux with respect to coil or conductor is called dynamically induced emf -all the generators works on the principle of dynamically induced emf
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redfred
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Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

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#1

Re: dc generator

12/04/2010 11:15 AM

Yeah, what is your point. This is generated via Faraday's law of induction.

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malar
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Join Date: Dec 2010
Location: india
Posts: 59
#2

Re: dc generator

12/04/2010 11:20 AM

the direction of the induced emf is given by fleming's right hand rule.........
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malar
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Join Date: Dec 2010
Location: india
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#3
In reply to #2

Re: dc generator

12/04/2010 11:45 AM

the magnitude of the induced emf is given by E=Blv
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malar
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Location: india
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#4
In reply to #2

Re: dc generator

12/04/2010 12:00 PM

the plane of rotation and the plane of flux should not be parallel to each other for the generation of the induced emf
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malar
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Location: india
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#5
In reply to #4

Re: dc generator

12/04/2010 12:06 PM

in both ac and dc generation the the basic nature of induced emf is sinusoidal in this we are taking visine(theta) why not cos??
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klearzen
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Join Date: Jun 2010
Location: St Louis MO USA
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#8
In reply to #5

Re: dc generator

12/04/2010 3:39 PM

Wrong, DC voltage and DC current is not sinusoidal, if it were why would we call it direct instead of alternating?

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malar
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Join Date: Dec 2010
Location: india
Posts: 59
#10
In reply to #8

Re: dc generator

12/05/2010 3:28 AM

i m not saying both ac and dc are sinusoidal but the emf generated in both ac and dc generators are sinusoidal we are using split ring commutators in dc generator to convert it to dc....
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Switchman
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#6

Re: dc generator

12/04/2010 12:53 PM

I think you are typing your homework question line by line...

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lyn
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Join Date: Oct 2008
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#7
In reply to #6

Re: dc generator

12/04/2010 1:27 PM

What we have here is a classic case of procrastination.

Homework must be due on Monday based on the volume of questions from OP.
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klearzen
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#9

Re: DC Generator

12/04/2010 3:58 PM

Induced EMF can take the form of mutual as well as self inductance (Think reactance). Flux Lines are invisible, act at a distance and are concentrated at the poles. Each flux line leaves one pole and reenters the opposite pole, these lines never cross and are curved (unlike electrostatic lines of force, which are straight). The number of lines of flux that CUT the inductor (coil) determine the amount of induced EMF. Dynamical in the the sense you have to have a relative motion. Direct current develops a magnetic field around the conductor, but it is not expanding and contracting (relative motion).

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PWSlack
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#11

Re: DC Generator

01/10/2023 8:32 AM

Impressive ranting skills.

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klearzen (2); lyn (1); malar (5); PWSlack (1); redfred (1); Switchman (1)

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