Answer / shyamkr

actually i don't understand what you actually want to ask in
this question...
there are any reasons because of which the excotor coil
fails in alternator
i)due to earth fault in excitor winding.
ii)due to short circuit of two or more turns.
iii)due to insufficient exciting current.
and some more...
i don't know whether i have given the thing you want in
this question or not........

Answer / satya prakash devagupthapu

the exciter coil of alternators fails due to
1)when the diode plate not properly work at the back of alternator which is connected to compound wound generator rotor.(the exciter field coil connections of alternator are connected to compound wound generator rotor).
2)and major reason is AVR failures also.

To avoid these failures of components maintain equal and correct load on each phase of the generator.
and avoid loose connections at the diode plate terminals.

Answer / pillay

thanks & sorry Shyamkr.It is suppose to be what are the
reasons 1} WHY the excitor coil of a alternator can fail.
2} How to prevent reoccurance.

what will happen if the field and armature both are made to rotate in a synchronous machine ?

4 Answers  

---

Y phase's (RYB) r only 3,not 4 or 5?plz answered in breif?

1 Answers  

---

What happen if we re-start H.T motor whose rotor is running at 40% rated speed. Is it will damage motor winding?

1 Answers  

---

What is Servo Ventilated Motor?

0 Answers   L&T,

---

what would happen nif we increase or decrease the capacitor of a flood light.

1 Answers  

---

how is capacitor bank look like

0 Answers  

---

What are the protections required in the main lt panel which is connected to the transformer.

1 Answers   Ispat,

---

the transient state stability limit of a system wherin power is transmitted throgh a double transmission line is (a)equal to steady state stability limit (b)more than its steady state stability limit (c)less than than its steady state stability limit (d)equal to its dynamic stability limit

1 Answers  

---

Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?

0 Answers  

---

Why we called L-G fault as line to ground fault why ground? suppose if a line falls on building roof then can we called these fault as line to roof fault? please explain why ground term is used here?

3 Answers   Bhel,

---

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

0 Answers  

---

Wghat is D-curve MCBs

3 Answers   Indeco,

---