can a rotating machine give the DC output without commutator?
if yes, how? if no, why?
- 6 Answers
- 10055 Views
- BARC, I also Faced
- E-Mail Answers
Answer Posted / s.sivaranjani
According faraday's law of electromagnetic induction
whenever there is a chanage in flux linked with the coil ,
it will be induced by an e.m.f (volatge).
Induced volatge will be of same type as that of source(i.e
alternating).
In DC machine(i.e) generator, the elecromagnetic poles are
generated with DC supply.
Dc machine consists of two main parts 1.stator 2.rotor
stator - stationary part consists of Poles.(north & south)
Rotor is a rotating one.also called as armature.
Rotor is fed by meachinal input i.e angular rotation.
Initially the rotor with armature coils do not carry any
current.
Because of the maechanical input the armature starts to
rotate at the constant magnetic field.
Therefore the armature experiences chnage in flux.
Hence an emf will be induced in the armature according to
faraday's law.
The generated emf is AC type. In order to make it
unidirectional (i.e DC) an arrangement is needed.
The arrangement is called Commutator.
Along with commuatator brush assembly is required to take
out the DC supply.
| Is This Answer Correct ? | 4 Yes | 3 No |
Post New Answer View All Answers
I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.
DC transmission
How energy is generated in hydroelectric power plant?
how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.
what is cathodic protaction?
How to select HT/MV cable size ?
If VFD is On but no starting commond on it. so how many outpout voltages of VFD
Explain about technical and non technical losses in distribution system?
Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???
how to increase or decrease speed in DC shunt motor by DC convertor
Electrical 'C' license full abbreviation , and full form
does buccholz in a transformer use batteries
can some one clearly explain why -48 volt DC use in telecom site????
how to calculate units consumption for a 12 hp motor /hr.
what is interfacing in computer studies?
