Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 69859 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / ashish
as we know that alternator work on the fraday's law ie when
a conductor cut the magnetic flux then a emf is induced. If
we give a.c supply than flux will also alternate and we will
get proper cuts of flux. hence we use dc supply.
| Is This Answer Correct ? | 3 Yes | 11 No |
Post New Answer View All Answers
Zone of protection and tripping scheme of arc protection relay.
what is the working process of over & under voltage relay.
i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection
What is lifting power for 1 wb/m2 and 1 A magnet?
Why we use duplex coil and hook switch in telephone system?
How colour picturetube works & how many year it will works.
what is the formula for hv test for cable and circuit breaker..????
what is there inside an inverter and how it works?
What is the power factor of an alternator at no load?
Define thermal resistance in the context of power amplifier.
Disadventage of cable-gland earthing if any ?
Operation carried out in thermal power stations?
How do apply electrical 'c'license......pls advice
In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?
how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw
