Answer / k.prakashchandra

To avoid the circulation of current in the screening due to
induction

What the reson for frequant instantaneous ground over current fault in our sync. Generator... 15 triping in 24 hr...

1 Answers   HCPL, Jhunjhunwala Vanaspati Jhoola, Regen Powertech,

---

draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.

1 Answers  

---

what happenes if two voltage source connected in parallel will be connected to load.

3 Answers   Efftronics Systems,

---

what kind of battery is used in laptops

4 Answers   Pepsi,

---

when we are going to higher voltage level in substations why we are using Sf6 circuit breakers instead of Vacuum circuit breakers.

3 Answers  

---

What happen if field ckt is open when a sailent pole alternator connected to infinite bus

3 Answers   Bhel, Nilkamal,

---

define one ampere?

2 Answers  

---

A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?

1 Answers  

---

750kva 11/415kv transformer having percentage impedence is5.64%. 11KV HV whose current 39.37A and 415V LV whose current 1043.43A.resistance is 2.5ohm. find no load loss and full load loss?

2 Answers  

---

What will be the resultant out put voltage when two different voltage rating batteries are vconnected in parallel? pls. answer with example if available.

1 Answers  

---

we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input

1 Answers   NHPC,

---

why single core HT cable need only one side earthing?

2 Answers  

---