how much earth resistance consider to commissioning the transformer?

3 Answers   Deccan Cements,

---

Natural frequency of a system gives... 1) nature of transient 2) overshoot 3) oscillations 4) speed of response

1 Answers   CCP,

---

Why the brushes used in dc machines are made of carbon not from other metal?

3 Answers  

---

as a electrical student why should i hire you?

0 Answers   TCS,

---

why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

---

What is the basic difference between 90% stator earth fault and 100% stator earth fault, and its phenmenona?

4 Answers   Reliance,

---

Why the earth to phase voltage is high 250 compare to other two phases

0 Answers  

---

What is the settings of distance protection relay in 400 kv line

0 Answers   Crompton Greaves,

---

what about the power of wattmeter at starting and loding?

0 Answers   TATA,

---

How would your past experience translate into success in this job?

0 Answers  

---

In a star to star transformer can we use a common neutral for both star connected primary and secondary

1 Answers  

---

what is difference between ac voltage and ac current

3 Answers   TATA,

---