why near the transformers, the Jelly(small white colored rocks)are poured.and what are conditions for that?

3 Answers  

---

what is the function of an auto reclosure relay in OHL?

1 Answers  

---

Why CT secondary should not left open??????????

2 Answers  

---

In AC Drives How can change & control its output Frequency?

5 Answers   Jindal,

---

HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

6 Answers   DLF,

---

---

how we calculate the 30 KW 3phase electric motor current on noload

23 Answers   Monnet, Siemens, SSR, Supermac Industries,

---

Alternating voltage and current is which type of quantities?

1 Answers  

---

What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?

0 Answers  

---

What is the difference between security constraint unit commitment and security constraint optimal power flow?

0 Answers   College School Exams Tests,

---

WHAT HAPPENS IN DIFFERENTIAL PROTECTION IF CT REACHES ITS KNEE VOLTAGE POINT?

4 Answers   Jindal,

---

What is meant by SPS Aluminium pipe in substations? Anyone knows whats this?

1 Answers   Amec,

---

Earth Resistivity

2 Answers  

---