Answer / bala.a

Hai
we are using two method for find fault level.
1 - based on the supply voltage level
2. Based on the T/F capacity , Impedance, cable and
distance .

The first methios iS very simple but you will follow as
per TNEB standard. TNEB standard

11 KV - 350 mva
22 KV - 500 mva
33 KV -750 MVA

SO based on the aove standard

for 11 KV = 350 / RT 3 * 11 =18.39 KA

i.e = 11= Applied voltage or system voltage

Answer / prateek

fault current is equal to 20 times the load I
generally
fault I=20 * 1.4

1.4 = load I

i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....

0 Answers  

---

transformer is connected with 50hz and 60hz at same rating which will give more output on same rating

2 Answers   Palace Consultant,

---

What are the advantages and disadvantages of negative feed back?

0 Answers  

---

What are the methods used to improve powerfactor ?

6 Answers  

---

Why inductors are installed in electrical circuits?

0 Answers  

---

Brushes are placed at magnetically neutral axis,when brushes reach that point,the armature conductor gets shorted,but it can be seen that the dc supply is also shorted,wont that get damage? help me plz

0 Answers  

---

State four advantages of hydro power station over nuclear power station.

1 Answers  

---

If a motor of 30KW rating &200 mtrs distance from feeder give me the cable size selection calculation?

0 Answers  

---

what is the working principle of induction motor

2 Answers  

---

how current flows in circuit?

11 Answers  

---

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

0 Answers  

---

CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

3 Answers  

---