Interested to Buy Any Domain ? << Click Here >> for more details...
why the field winding of synchronous machine is excited by dc source
- 2 Answers
- 6363 Views
- I also Faced
- E-Mail Answers
Answer Posted / siva naik
The field wdg is placed on rotor of an synchronous machine
is exicited with dc source.when the exicitation is given to
rotor of the field wdg in its current will flow. so this
current setup an flux which expernice the torque will be
setup on rotor.acc to the farady law of electro magnetic
induction. at the same time revoluoing flux will be setup
on the aramature wdg.so that the stator aramature flux of
the mmf and stationary fileld flux will not be zero.after
certain speed the magntic locking tendcy will come to
picturei.e stator and rotor poles will be magentic inter
locking so that it will rotate with synchronous speed.
If rotor field wdg is is exicited with Ac source, in wdg
alternating flux will be setup on rotor.that the stator
aramature flux of the mmf and stationary fileld flux will
zero so that the machine does not provide any output
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups
what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.
what is a synchronizing lamp ?
can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.
what is the criteria for selection of conductor used for ehv ac electrical dischrge
Define piezo-electric effect?
-What shall be short circuit current of LV switchgear for a 1000 kva, 11.415kv, 3 phase tranformer with 5% reactance.
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.
what are the reasons of CT circuit faulty in busbar protection scheme?
How to calculate VA rating for CT or PT or Control Transformer?
why there using acb enclosure in big buildings
why is using sensor?what is differece between photoelectric and proxmitty?
why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%
if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
What are the components of feedback control system?
