why middle phase should used for earth fault and other phases used for over current in overcurrent and earth fault relay?

7 Answers   ABB, ONGC,

---

If we are importing real power & exporting reactive power then what will be the effect on our system

3 Answers  

---

what happens when a dc shunt motor fed with an alternating suppy ?

1 Answers  

---

What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

0 Answers  

---

we can stepdown the voltage from 230/12v ,and we use the voltage for various electronics components why can't we step up the voltage from 12/230v if we can shall we use the voltage for domestic single phase supply

5 Answers   Areva,

---

what is corona effect?

39 Answers   ABB, Genco, Wipro,

---

why we multiply 11 in High Electric supply?(eg.11KV, 33Kv, 330Kv etc.)

3 Answers  

---

what happens when d cexcitation given to alternator is removed while it is running or what happens when dc excitation is failed in alternator while running?

10 Answers  

---

why white color LED light is not possible?

1 Answers  

---

Where we give genset o/p in home & industrial applications ?

1 Answers  

---

Why the meters sonnected to metering core of CT are not damagedon event of a fault??? Explain the phenomena??

1 Answers   Schneider,

---

Give details on how you intend to handle a challenging position you are posted to manage unexpectedly as a company staff?

0 Answers  

---