Answer / k.prakashchandra

Field failure makes synch gen run as induction gen drawing
large lagging KVAR from system and hence KVAR relay will
act.In older gen, there was no such relay.If the field
breaker tripped the whole unit tripped on master trip.If the
FB did not trip,the unit cb tripped on over current.

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

2 Answers   BEL,

---

Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

1 Answers  

---

1)which height building required lightning arrester? 2)how to calculate the requirement of lightning arrester? 3)what is the pro instrument? 5)how to test protective relay like overload?earth fault relay?

1 Answers  

---

Explain the operation of grid connected central solar inverter ?

1 Answers  

---

How to Convert horsepower to kva? what is the three phase formula? email me if u know thanks Rehan smileavail@msn.com

3 Answers  

---

what is entropy?

3 Answers   NTPC,

---

During the troubleshooting of an inoperative shunt generator, you found the voltage to be 2+ volts; what is known from this. Is it (1). odds are the armature is good (2). odds are there is no field current flowing in field windings (3). odds are the armature is bad (4). both 1 & 2 are correct (5). both 2 & 3 are correct

2 Answers   Air Force,

---

Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

1 Answers  

---

why in generating station generation voltage is 11 kv

1 Answers   L&T, Usha Martin,

---

what is Distance protection & how did it work

2 Answers  

---

why transformer rated in KVA not in KW ? we know that W= v*i

6 Answers  

---

WHY FEEDERS TRIP IN COLD AND FOGY WEATHER?

2 Answers  

---