Answer / rakesh dalai

Whenever electrical power transformer is loaded, the temperature of the transformer insulating oil increases, consequently the volume of the oil is increased. As the volume of the oil is increased, the air above the oil level in conservator will come out. Again at low oil temperature; the volume of the oil is decreased, which causes the volume of the oil to be decreased which again causes air to enter into conservator tank.
The natural air always consists of more or less moisture in it and this moisture can be mixed up with oil if it is allowed to enter into the transformer. The air moisture should be resisted during entering of the air into the transformer, because moisture is very harmful for transformer insulation. A silica gel breather is the most commonly used way of filtering air from moisture.

what is the difference between MCB and MCCB?

4 Answers  

---

How to calculate the slip ring induction motor rotor current and voltage.

1 Answers   Bhel,

---

low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

1 Answers  

---

If the maximum demand is 120 KVA in a building, then what is the Current taken according to load given ? Formula for it ?

3 Answers  

---

WHAT IS THE THUMBRULE FOR FINDING OUT THE CURRENT CAPICITY OF A COPPER WIRE?? 2.5, 4, 6MM SQUARE ETC...

5 Answers  

---

IF ANYONE HAVE ANY QUESTION ASK ME AT MY MAIL anmol.bhardwaj5@gmail.com

0 Answers  

---

why we don't use earthing as neutral?

1 Answers  

---

What is difference between insulating medium and fault current interruption medium in a switching device.

0 Answers  

---

In a flange coupling, the flange bolts are designed for

0 Answers   Caterpillar,

---

what is the synchronous timer ? and it applications.

0 Answers   CPCL,

---

CAN WE GENERATE AC WITHOUT DC EXCITATION?

1 Answers  

---

xlpe cable 4 core nuetral wire is small why ?

3 Answers  

---