why dc supply is given for excitation of ac alternator?how
dc can produce flux?

Answers were Sorted based on User's Feedback



why dc supply is given for excitation of ac alternator?how dc can produce flux?..

Answer / coolsunil56

dc excitation is given to rotor so that it gets magnetised and gets locked with magnetic revolving field of statorand start rotating with same speed means at synchronous speed.

Is This Answer Correct ?    3 Yes 0 No

why dc supply is given for excitation of ac alternator?how dc can produce flux?..

Answer / k.sri405

dc can produced flux but it is constant in nature so magnet
have constant pole. that's why this pole gets locked with
the poles of stator

Is This Answer Correct ?    2 Yes 0 No

why dc supply is given for excitation of ac alternator?how dc can produce flux?..

Answer / kundanmalani1990

Excitaion r use to the pole r converte to the parmanet magnet so the excitation r use

Is This Answer Correct ?    3 Yes 3 No

why dc supply is given for excitation of ac alternator?how dc can produce flux?..

Answer / naveen

D.C Supply in alternater  used for genarating magnatic field in roter ,But nature of field would be Stationary Not fluctuating, when Roter get speed from prime mover  its Induced VOLTAGE AND CURRENT in Armature. 

Is This Answer Correct ?    0 Yes 0 No

why dc supply is given for excitation of ac alternator?how dc can produce flux?..

Answer / vamsi

ac alternator is not a salf stator so dc supply for self
motor,dc can not produce flux.

Is This Answer Correct ?    2 Yes 5 No

Post New Answer

More Electrical Engineering Interview Questions

What is the difference of grounding and earthing?

6 Answers  


How to test the vector groups of 3 winding transformer & phase displacements

2 Answers  


what is the contact resistance of Air circuit breaker??

1 Answers  


what is difference between inductive and reactiveload?

5 Answers   ONGC,


what is mean Boost voltage and what is working principle of Tube light

2 Answers   Trimax,






how fault in an electric system is detected & hw protection of equipments is done ?

6 Answers   NTPC, RLY,


Why front mounted CT polarities are always towards breaker?

0 Answers  


WHAT IS THE WINDING PROCEDURE OF ELECTRICAL MOTOR

0 Answers   GE,


HOW TO WORK A VFD?SAY SIMPLE METHOD

1 Answers   GE,


what is the ground fault relay,which purpose it will be use,clearly tell me plz

0 Answers  


what is meant by reactive power ,active power & real power ? thank you

2 Answers  


why our indian system choose the 230 volt for single phase&415 for 3-phase voltage,in forign side 110 volt is used what is the difference

4 Answers   Jindal,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)