Why DC excitation is used for alternators? Why cant it be AC?
Answer Posted / ashokreddyreguri
Rotor of the alternator is given dc supply so constant
magnetic poles are formed.These constant magnetic poles
produce constant flux.The rotor of the alternator is
rotated by using prime mover,so constant poles are
rotated,so these rotating magnetic poles produce rotating
magnetic field.When this rotating magnetic field cuts three
phase stator conductors produces three phase supply.
| Is This Answer Correct ? | 28 Yes | 6 No |
Post New Answer View All Answers
What are the uses of stepper motor?
What is the meaning of HT Trivector Meter ?
What is meant by positive and negative feedback?
how can calculate 1kva generator running time in 1 liter keroscene
what is the relation between size of the anteena and wavelenghth of radiated wave
What is the distance between body earthing and neutral earthing.?
sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
what is a vector protection in transformer
When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?
What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?
I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????
what is errection pcbs?
placement paper samples of mspl company
which type of amplifiers are used in multimete?