Interested to Buy Any Domain ? << Click Here >> for more details...
if dc excitation is used to produce manetic flux in rotating
machines then ehy it is not used in transformers.
- 4 Answers
- 8018 Views
- I also Faced
- E-Mail Answers
Answer Posted / shailesh tankni
in generators or alternators dc supply is provided to the
field along with the mechanical external force for rotating
the field winding. in this way stationary field is used to
produce rotating field which produces rotating flux and
excites the armature winding. so it works on the principle
of faraday's law of induction and provides excitation in the
armature winding.
but in transformer there is no moving part and hence if dc
supply is applied to it there will be no change in flux and
no excitation is produced in secondary winding.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
what is the criteria for selection of conductor used for ehv ac electrical dischrge
What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
can you any one give exact mathematical relation between AC current and DC current?
Draw the equivalent circuit of crystal oscillator?
In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?
What are the different types of dams?
1sq mm dc powr cable can carry how much dc currnt
how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .
what is the setting of locked rotor in HT motor ? (answer expecting in percentage)
what is the function of choke in the flourcent tube lights and why the colour is in white mostly in flourcent tube lights
Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.
XYZ
Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.
electrical
What is the source of dependent source ?
