Interested to Buy Any Domain ? << Click Here >> for more details...
Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 78386 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / b.t.ramakrishna rao
a current carrying conductor placed in a magnetic filed experiences a force
if d.c excitation is provided a constant magnetic field is produced hence the rotor conductors can experience a force.
where as if a.c excitation is given an alternating magnetic field is produced which results zero net magnetic filed,hence the rotor conductors fials to experience a force
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Transmission through a short line depends on
How to calculate the value of earth capacitance in a transmission line.
As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?
Working of microwave oven?
what is advertised hop count
Can we test the alignment of End shield and stator of turbogenerator without rotor insertion? Also how to fix maintain the alignment at site installation?
can you plz send l&t aptitude questions if available its urgent plz plz plz
how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)
How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.
Differentiate between digital phase converter and ordinary phase converter.
why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.
What are the protections for safe running of electric generator?
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards
What's mean HVF & HAF in Vacuum Circuit Breaker?
static chagre
