why we are giving D.C. supply to field of an alternator, why can't we give the a.C. supply
- 12 Answers
- 16740 Views
- APTransco, Proman, I also Faced
- E-Mail Answers
Answer Posted / pravallika
for magnetising poles in rotor
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
Transmission through a short line depends on
Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?
What is difference between Harmonic and Non harmonic Capacitor Bank?
What is the significance of integral controller and derivative controller in a pid controller?
what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?
What is PQA???Applications........
if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.
What is the magnetic field (coil DC ) of Turbo Expander?
difference bewteen reverse current and alternating current
for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance
how to prepare the technical test
What is negative sequence over voltage element?
what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..
RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?
What are chief characteristics of state-space method and its techniques ?
